Soil degradation is a major challenge in Sub-Saharan Africa, where integrated soil fertility management has been promoted to restore productivity. A long-term experiment (1972\uffe2\uff80\uff931992) run in Benin consisted of two phases: a depletion phase (1972\uffe2\uff80\uff931980) with varying levels of mineral and organic fertilisation, and a regeneration phase (1981\uffe2\uff80\uff931992) where all plots received full fertilisation and organic matter additions. Soils were sampled at 0\uffe2\uff80\uff9320\uffc2\uffa0cm depth in 1973, 1974, 1982, and 1989 to assess fertility changes. Mineral fertilisation (N, P, K) and plant biomass management (crop residue retention and biomass additions) significantly influenced seed cotton and maize grain yields during the depletion phase. Soil organic carbon declined consistently in all treatments during depletion but remained stable during regeneration. The long-term effect was evident only in seed cotton yield during depletion. In contrast, due to high variability, maize grain yield showed no consistent trend. The combined use of organic resources and mineral fertilisers helped maintain crop productivity but led to declining soil chemical properties in this Ferralsol. The analysis of this outdated yet unpublished dataset shed light on how long-term soil depletion effects persist over time, even when soil fertility management is restored, indicating a sort of \uffe2\uff80\uff98soil memory\uffe2\uff80\uff99. The persistence of these effect suggests that regenerative interventions must begin before critical thresholds of degradation are crossed. Future research should focus on alternative measures to restore/maintain soil fertility not evaluated in this experiment, such as conservation tillage or legume integration, to provide long-term benefits for smallholder farmers facing soil fertility challenges.Soil microbial carbon use efficiency (CUE), defined as the ratio of organic C allocated to growth over organic C taken up, strongly affects soil carbon (C) cycling. Despite the importance of the microbial CUE for the terrestrial C cycle, very little is known about how it is affected by nutrient availability. Therefore, we studied microbial CUE and microbial biomass turnover time in soils of a long-term fertilization experiment in a temperate grassland comprising five treatments (control, PK, NK, NP, NPK). Microbial CUE and the turnover of microbial biomass were determined using a novel substrate-independent method based on incorporation of 18O from labeled water into microbial DNA. Microbial respiration was 28-37% smaller in all three N treatments (NK, NP, and NPK) compared to the control, whereas the PK treatment did not affect microbial respiration. N-fertilization decreased microbial C uptake, while the microbial growth rate was not affected. Microbial CUE ranged between 0.31 and 0.45, and was 1.3- to 1.4-fold higher in the N-fertilized soils than in the control. The turnover time ranged between 80 and 113 days and was not significantly affected by fertilization. Net primary production (NPP) and the abundance of legumes differed strongly across the treatments, and the fungal:bacterial ratio was very low in all treatments. Structural equation modeling revealed that microbial CUE was exclusively controlled by N fertilization and that neither the abundance of legumes (as a proxy for the quality of the organic matter inputs) nor NPP (as a proxy for C inputs) had an effect on microbial CUE. Our results show that N fertilization did not only decrease microbial respiration, but also microbial C uptake, indicating that less C was intracellularly processed in the N fertilized soils. The reason for reduced C uptake and increased CUE in the N-fertilization treatments is likely an inhibition of oxidative enzymes involved in the degradation of aromatic compounds by N in combination with a reduced energy requirement for microbial N acquisition in the fertilized soils. In conclusion, the study shows that N availability can control soil C cycling by affecting microbial CUE, while plant community-mediated changes in organic matter inputs and P and K availability played no important role for C partitioning of the microbial community in this temperate grassland.
", "keywords": ["FUNGAL", "2. Zero hunger", "106022 Mikrobiologie", "Nitrogen addition", "BACTERIAL", "NITROGEN DEPOSITION", "GROWTH EFFICIENCY", "FOREST FLOOR", "Nutrients", "04 agricultural and veterinary sciences", "15. Life on land", "Stoichiometry", "ORGANIC-MATTER", "RESPIRATION", "106026 \u00d6kosystemforschung", "13. Climate action", "Nutrient limitation", "Microbial growth yield", "106022 Microbiology", "0401 agriculture", " forestry", " and fisheries", "Mean residence time", "STOICHIOMETRIC CONTROLS", "ENZYME-ACTIVITY", "106026 Ecosystem research", "COMMUNITY STRUCTURE"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2016.03.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2016.03.008", "name": "item", "description": "10.1016/j.soilbio.2016.03.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2016.03.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-06-01T00:00:00Z"}}, {"id": "10.1016/j.agee.2003.12.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:15:30Z", "type": "Journal Article", "created": "2004-02-05", "title": "Effects Of Forest Conversion To Pasture On Soil Carbon Content And Dynamics In Brazilian Amazonia", "description": "Abstract Soils play an important role in the carbon cycle, and deforestation in the tropics affects both soil carbon storage and CO2 release into the atmosphere. The consequences of deforestation and conversion to pasture for soil carbon content and dynamics were examined in two soil types differing mainly by their texture. Two chronosequences were selected, each consisting of an intact forest and three pastures of different ages (4, 8, 15 years and 3, 9, 15 years, respectively). One chronosequence is located in the central part of the Brazilian Amazon basin, where the soils are clayey ferralsols, and the second in the Eastern Brazilian Amazon Basin, where the soils are sandy clayey acrisols. In the upper layer the C content of clayey soils was three times higher than in the sandy soils, but despite the differences in soil texture, the C distribution in the particle-size fractions was quite similar. In the two chronosequences, the conversion to pasture induced a slight increase in C content. Bulk density increases were greater on soils with lower clay contents. The 13 C measurements, which allowed to calculate the distribution of C derived from forest and from pasture, showed that all the particle-size fractions incorporated C derived from pasture and that a significant proportion of the young organic matter is rapidly trapped in the finest fractions. Although the proportions of pasture-derived C were higher in the sandy soils than in the clayey soils, the amounts of pasture-derived C in the particle-size fractions were 2\u20133 times larger in the clayey soils than in the sandy soils.", "keywords": ["rain-forest", "550", "ZONE TROPICALE", "c-13 natural abundance", "TEXTURE", "[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study", "630", "Carbon Cycle", "C-13 isotope", "Amazonia", "EVOLUTION DES SOLS SOUS CULTURE", "STRUCTURE DU SOL", "soil carbon storage", "particle-size fractions", "Pasture", "cultivated oxisols", "ANALYSE ISOTOPIQUE", "SABLE", "eastern amazonia", "Deforestation", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study", "Acrisol", "2. Zero hunger", "tropical soils Organic-matter dynamics", "Brasil", "size-fractions", "PATURAGE", "turnover", "Soil Carbon", "04 agricultural and veterinary sciences", "South America", "15. Life on land", "CARBONE ORGANIQUE", "STOCK ORGANIQUE", "ARGILE", "0401 agriculture", " forestry", " and fisheries", "DEFORESTATION", "texture"], "contacts": [{"organization": "Desjardins, T., Barros, E., Sarrazin, M., Girardin, C., Mariotti, A.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2003.12.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agriculture%2C%20Ecosystems%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.agee.2003.12.008", "name": "item", "description": "10.1016/j.agee.2003.12.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2003.12.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-07-01T00:00:00Z"}}, {"id": "10.1016/j.agee.2006.05.011", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:15:32Z", "type": "Journal Article", "created": "2006-07-07", "title": "Long-Term Impact Of A Gliricidia-Maize Intercropping System On Carbon Sequestration In Southern Malawi", "description": "Tree/crop systems under agroforestry practice are capable of sequestering carbon (C) in the standing biomass and soil. Although studies have been conducted to understand soil organic C increases in some agroforestry technologies, little is known about C sequestered in simultaneous tree/crop intercropping systems. The main objective of this study was to determine the effect of agroforestry practice on C sequestration and CO2-C efflux in a gliricidia-maize intercropping system. The experiment was conducted at an experimental site located at the Makoka Agricultural Research Station, in Malawi. The studies involved two field plots, 7-year (MZ21) and 10-year (MZ12), two production systems (sole-maize and gliricidia-maize simultaneous intercropping systems). A 7-year-old grass fallow (Grass-F) was also included. Gliricidia prunings were incorporated at each time of tree pruning in the gliricidia-maize. The amount of organic C recycled varied from 0.8 to 4.8 Mg C ha \ufffd 1 in gliricidia-maize and from 0.4 to 1.0 Mg C ha \ufffd 1 in sole-maize. In sole-maize, net decreases of soil carbon of 6M g Ch a \ufffd 1 at MZ12 and 7 Mg C ha \ufffd 1 at MZ21 in the topsoil (0\u201020 cm) relative to the initial soil C were observed. After 10 years of continuous application of tree prunings C was sequestered in the topsoil (0\u201020 cm) in gliricidia-maize was 1.6 times more than in sole-maize. A total of 123\u2010149 Mg C ha \ufffd 1 were sequestered in the soil (0\u2010200 cm depth), through root turnover and pruning application in the gliricidiamaize system. Carbon dioxide evolutionvaried from 10 to 28 kg ha \ufffd 1 day \ufffd 1 in sole-maize and 23 to 83 kg ha \ufffd 1 day \ufffd 1 in gliricidia-maize. We concluded that gliricidia-maize intercropping system could sequester more C in the soil than sole-maize. # 2006 Elsevier B.V. All rights reserved.", "keywords": ["2. Zero hunger", "central ohio", "yields", "dynamics", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "nitrogen", "crop residue", "soil properties", "agroforestry systems", "tillage", "0401 agriculture", " forestry", " and fisheries", "organic-matter", "management", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2006.05.011"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agriculture%2C%20Ecosystems%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.agee.2006.05.011", "name": "item", "description": "10.1016/j.agee.2006.05.011", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2006.05.011"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-01-01T00:00:00Z"}}, {"id": "10.1016/j.agee.2012.10.003", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:15:37Z", "type": "Journal Article", "created": "2012-11-22", "title": "Medium-Term Impact Of Tillage And Residue Management On Soil Aggregate Stability, Soil Carbon And Crop Productivity", "description": "Conservation agriculture is widely promoted for soil conservation and crop productivity increase, although rigorous empirical evidence from sub-Saharan Africa is still limited. This study aimed to quantify the medium-term impact of tillage (conventional and reduced) and crop residue management (retention and removal) on soil and crop performance in a maize\u2013soybean rotation. A replicated field trial was started in sub-humid Western Kenya in 2003, and measurements were taken from 2005 to 2008. Conventional tillage negatively affected soil aggregate stability when compared to reduced tillage, as indicated by lower mean weight diameter values upon wet sieving at 0\u201315 cm (PT < 0.001). This suggests increased susceptibility to slaking and soil erosion. Tillage and residue management alone did not affect soil C contents after 11 cropping seasons, but when residue was incorporated by tillage, soil C was higher at 15\u201330 cm (PT*R = 0.037). Lack of treatment effects on the C content of different aggregate fractions indicated that reduced tillage and/or residue retention did not increase physical C protection. The weak residue effect on aggregate stability and soil C may be attributed to insufficient residue retention. Soybean grain yields tended to be suppressed under reduced tillage without residue retention, especially in wet seasons (PT*R = 0.070). Consequently, future research should establish, for different climatic zones and soil types, the critical minimum residue retention levels for soil conservation and crop productivity.", "keywords": ["organic-matter dynamics", "crop residues", "agregados del suelo", "no-till", "yields", "nitrogen", "conservaci\u00f3n del suelo", "crop rotation", "2. Zero hunger", "rotaci\u00f3n de cultivos", "carbon", "soil conservation", "04 agricultural and veterinary sciences", "15. Life on land", "carbono", "protection", "stabilization", "conservation agriculture", "kenya", "soil aggregates", "africa", "tillage", "systems", "0401 agriculture", " forestry", " and fisheries", "labranza", "residuos de cosecha", "rendimiento", "africa al sur del sahara"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2012.10.003"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agriculture%2C%20Ecosystems%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.agee.2012.10.003", "name": "item", "description": "10.1016/j.agee.2012.10.003", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2012.10.003"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-01-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2004.08.013", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:12Z", "type": "Journal Article", "created": "2004-09-30", "title": "Decomposition Of C-14-Labeled Roots In A Pasture Soil Exposed To 10 Years Of Elevated Co2", "description": "Abstract The net flux of soil C is determined by the balance between soil C input and microbial decomposition, both of which might be altered under prolonged elevated atmospheric CO 2 . In this study, we determined the effect of elevated CO 2 on decomposition of grass root material ( Lolium perenne L.). 14 C-labeled root material, produced under ambient (35\u00a0Pa pCO 2 ) or elevated CO 2 (70\u00a0Pa pCO 2 ) was incubated in soil for 64 days. The soils were taken from a pasture ecosystem which had been exposed to ambient (35\u00a0Pa pCO 2 ) or elevated CO 2 (60\u00a0Pa pCO 2 ) under FACE-conditions for 10 years and two fertilizer N rates: 140 and 560\u00a0kg N ha \u22121 \u00a0year \u22121 . In soil exposed to elevated CO 2 , decomposition rates of root material grown at either ambient or elevated CO 2 were always lower than in the control soil exposed to ambient CO 2 , demonstrating a change in microbial activity. In the soil that received the high rate of N fertilizer, decomposition of root material grown at elevated CO 2 decreased by approximately 17% after incubation for 64 days compared to root material grown at ambient CO 2 . The amount of 14 CO 2 respired per amount of 14 C incorporated in the microbial biomass ( q 14 CO 2 ) was significantly lower when roots were grown under high CO 2 compared to roots grown under low CO 2 . We hypothesize that this decrease is the result of a shift in the microbial community, causing an increase in metabolic efficiency. Soils exposed to elevated CO 2 tended to respire more native SOC, both with and without the addition of the root material, probably resulting from a higher C supply to the soil during the 10 years of treatment with elevated CO 2 . The results show the importance of using soils adapted to elevated CO 2 in studies of decomposition of roots grown under elevated CO 2 . Our results further suggest that negative priming effects may obscure CO 2 data in incubation experiments with unlabeled substrates. From the results obtained, we conclude that a slower turnover of root material grown in an \u2018elevated-CO 2 world\u2019 may result in a limited net increase in C storage in ryegrass swards.", "keywords": ["organic-matter dynamics", "2. Zero hunger", "microbial biomass", "atmospheric carbon-dioxide", "turnover", "fine roots", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "forest soils", "tallgrass prairie", "trifolium-repens l", "lolium-perenne", "litter quality", "0401 agriculture", " forestry", " and fisheries", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2004.08.013"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2004.08.013", "name": "item", "description": "10.1016/j.soilbio.2004.08.013", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2004.08.013"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-03-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.03.012", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:14Z", "type": "Journal Article", "created": "2007-04-24", "title": "Soil Carbon Turnover And Sequestration In Native Subtropical Tree Plantations", "description": "Approximately 30% of global soil organic carbon (SOC) is stored in subtropical and tropical ecosystems but it is being rapidly lost due to continuous deforestation. Tree plantations are advocated as a C sink, however, little is known about rates of C turnover and sequestration into soil organic matter under subtropical and tropical tree plantations. We studied changes in SOC in a chronosequence of hoop pine (Araucaria cwunninghamii) plantations established on former rainforest sites in seasonally dry subtropical Australia. SOC, delta C-13, and light fraction organic C (LF C < 1.6 g cm(-3)) Were determined in plantations, secondary rainforest and pasture. We calculated loss of rainforest SOC after clearing for pasture using an isotope mixing model, and used the decay rate of rainforest-derived C to predict input of hoop pine-derived C into the soil. Total SOC stocks to 100 cm depth were significantly (P < 0.01) higher under rainforest (241 t ha(-1)) and pasture (254 t ha(-1)) compared to hoop pine (176-211 t ha(-1)). We calculated that SOC derived from hoop pine inputs ranged from 32% (25 year plantation) to 61% (63 year plantation) of total SOC in the 0-30 cm soil layer, but below 30 cm all C originated from rainforest. These results were compared to simulations made by the Century soil organic matter model. The Century model Simulations showed that lower C stocks under hoop pine plantations were due to reduced C inputs to the slow turnover C pool, such that this pool only recovers to within 45% of the original rainforest C pool after 63 years. This may indicate differences in soil C stabilization mechanisms under hoop pine plantations compared with rainforest and pasture. These results demonstrate that subtropical hoop pine plantations do not rapidly sequester SOC into long-term storage pools, and that alternative plantation systems may need to be investigated to achieve greater soil C sequestration. (c) 2007 Elsevier Ltd. All rights reserved.", "keywords": ["Araucaria", "C-13", "Soil Science", "Land-use Change", "Storage", "Puerto-rico", "Century model", "01 natural sciences", "C1", "light fraction carbon", "Pasture", "300103 Soil Chemistry", "Southern Queensland", "Rain-forest", "0105 earth and related environmental sciences", "tree plantations", "Organic-matter Dynamics", "770702 Land and water management", "04 agricultural and veterinary sciences", "15. Life on land", "Long-term Trends", "carbon sequestration", "soil organic carbon", "Forest Conversion", "Continuous Cultivation", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.03.012"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.03.012", "name": "item", "description": "10.1016/j.soilbio.2007.03.012", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.03.012"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-08-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2003.12.007", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:18Z", "type": "Journal Article", "created": "2004-02-10", "title": "Earthworm Biomass As Additional Information For Risk Assessment Of Heavy Metal Biomagnification: A Case Study For Dredged Sediment-Derived Soils And Polluted Floodplain Soils", "description": "The important role of earthworms in the biomagnification of heavy metals in terrestrial ecosystems is widely recognised. Differences in earthworm biomass between sites is mostly not accounted for in ecological risk assessment. These differences may be large depending on soil properties and pollution status. A survey of earthworm biomass and colonisation rate was carried out on dredged sediment-derived soils (DSDS). Results were compared with observations for the surrounding alluvial plains. Mainly grain size distribution and time since disposal determined earthworm biomass on DSDS, while soil pollution status of the DSDS was of lesser importance. Highest earthworm biomass was observed on sandy loam DSDS disposed at least 40 years ago.", "keywords": ["LUMBRICUS-RUBELLUS", "Geologic Sediments", "Time Factors", "colonisation", "COPPER", "earthworms", "CONFINED DISPOSAL FACILITIES", "alluvial", "Risk Assessment", "01 natural sciences", "ECOLOGICAL RISK", "CADMIUM", "EISENIA-FETIDA", "Metals", " Heavy", "Animals", "Soil Pollutants", "landfills", "MICROORGANISMS", "Biomass", "Oligochaeta", "Ecosystem", "risk", "0105 earth and related environmental sciences", "Biology and Life Sciences", "04 agricultural and veterinary sciences", "CONTAMINATED SOILS", "15. Life on land", "ORGANIC-MATTER", "13. Climate action", "Earth and Environmental Sciences", "GROWTH", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2003.12.007"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Pollution", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.envpol.2003.12.007", "name": "item", "description": "10.1016/j.envpol.2003.12.007", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2003.12.007"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-06-01T00:00:00Z"}}, {"id": "10.1016/j.foreco.2022.120637", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:16:35Z", "type": "Journal Article", "created": "2022-11-25", "title": "How does management affect soil C sequestration and greenhouse gas fluxes in boreal and temperate forests? \u2013 A review", "description": "The global forest carbon (C) stock is estimated at 662 Gt of which 45% is in soil organic matter. Thus, comprehensive understanding of the effects of forest management practices on forest soil C stock and greenhouse gas (GHG) fluxes is needed for the development of effective forest-based climate change mitigation strategies. To improve this understanding, we synthesized peer-reviewed literature on forest management practices that canmitigate climate change by increasing soil C stocks and reducing GHG emissions. We further identified soil processes that affect soil GHG balance and discussed how models represent forest management effects on soil in GHG inventories and scenario analyses to address forest climate change mitigation potential.Forest management effects depend strongly on the specific practice and land type. Intensive timber harvesting with removal of harvest residues/stumps results in a reduction in soil C stock, while high stocking density and enhanced productivity by fertilization or dominance of coniferous species increase soil C stock. Nitrogenfertilization increases the soil C stock and N2O emissions while decreasing the CH4 sink. Peatland hydrology management is a major driver of the GHG emissions of the peatland forests, with lower water level corresponding to higher CO2 emissions. Furthermore, the global warming potential of all GHG emissions (CO2, CH4 and N2O) together can be ten-fold higher after clear-cutting than in peatlands with standing trees. The climate change mitigation potential of forest soils, as estimated by modelling approaches, accounts for stand biomass driven effects and climate factors that affect the decomposition rate. A future challenge is to account for the effects of soil preparation and other management that affects soil processes by changing soil temperature, soil moisture, soil nutrient balance, microbial community structure and processes, hydrology and soil oxygen concentration in the models. We recommend that soil monitoring and modelling focus on linkingprocesses of soil C stabilization with the functioning of soil microbiota.", "keywords": ["[SDE] Environmental Sciences", "330", "550", "Peatland hydrology management", "CLIMATE-CHANGE ADAPTATION", "WOOD ASH APPLICATION", "530", "Greenhouse gas", "SITE PREPARATION", "630", "12. Responsible consumption", "BELOW-GROUND CARBON", "11. Sustainability", "SDG 13 - Climate Action", "NITROGEN-FERTILIZATION", "SDG 15 - Life on Land", "2. Zero hunger", "PONDEROSA PINE", "GE", "PLANT LITTER DECOMPOSITION", "NORWAY SPRUCE", "04 agricultural and veterinary sciences", "15. Life on land", "004", "Forest fertilization", "Harvesting practices", "ORGANIC-MATTER", "Forest fire management", "13. Climate action", "[SDE]Environmental Sciences", "Forest soil carbon management", "0401 agriculture", " forestry", " and fisheries", "MICROBIAL COMMUNITY STRUCTURE", "GE Environmental Sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2022.120637"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Forest%20Ecology%20and%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.foreco.2022.120637", "name": "item", "description": "10.1016/j.foreco.2022.120637", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2022.120637"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2023-02-01T00:00:00Z"}}, {"id": "10.1016/j.rser.2012.01.027", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:02Z", "type": "Journal Article", "created": "2012-02-17", "title": "Spatial Variation Of Environmental Impacts Of Regional Biomass Chains", "description": "In this study, the spatial variation of potential environmental impacts of bioenergy crops is quantitatively assessed. The cultivation of sugar beet and Miscanthus for bioethanol production in the North of the Netherlands is used as a case study. The environmental impacts included are greenhouse gas (GHG) emissions (during lifecycle and related to direct land use change), soil quality, water quantity and quality, and biodiversity. Suitable methods are selected and adapted based on an extensive literature review. The spatial variation in environmental impacts related to the spatial heterogeneity of the physical context is assessed using Geographical Information System (GIS). The case study shows that there are large spatial variations in environmental impacts of the introduction of bioenergy crops. Land use change (LUC) to sugar beet generally causes more negative environmental impacts than LUC to Miscanthus. LUC to Miscanthus could have positive environmental impacts in some areas. The most negative environmental impacts of a shift towards sugar beet and Miscanthus occur in the western wet pasture areas. The spatially combined results of the environmental impacts illustrate that there are several trade offs between environmental impacts: there are no areas were no negative environmental impacts occur. The assessment demonstrates a framework to identify areas with potential negative environmental impacts of bioenergy crop production and areas where bioenergy crop production have little negative or even positive environmental impacts.", "keywords": ["2. Zero hunger", "certification", "0211 other engineering and technologies", "costs", "energy crop cultivation", "argentina part", "02 engineering and technology", "15. Life on land", "7. Clean energy", "13. Climate action", "water-use", "land-use", "0202 electrical engineering", " electronic engineering", " information engineering", "miscanthus", "organic-matter", "scale bioenergy production", "biodiversity"]}, "links": [{"href": "https://doi.org/10.1016/j.rser.2012.01.027"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Renewable%20and%20Sustainable%20Energy%20Reviews", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.rser.2012.01.027", "name": "item", "description": "10.1016/j.rser.2012.01.027", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.rser.2012.01.027"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-05-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2006.09.015", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:14Z", "type": "Journal Article", "created": "2006-10-20", "title": "Do Earthworms Increase N2o Emissions In Ploughed Grassland?", "description": "Abstract Earthworm activity has been reported to lead to increased production of the greenhouse gas nitrous oxide (N2O). This is due to emissions from worms themselves, their casts and drilosphere, as well as to general changes in soil structure. However, it remains to be determined how important this effect is on N2O fluxes from agricultural systems under realistic conditions in terms of earthworm density, soil moisture, tillage activity and residue loads. We quantified the effect of earthworm presence on N2O emissions from a pasture after simulated ploughing of the sod (\u2018grassland renovation\u2019) for different soil moisture contents during a 62-day mesocosm study. Sod (with associated soil) and topsoil were separately collected from a loamy Typic Fluvaquent. Treatments included low (L), medium (M) and high (H) moisture content, in combination with: only soil (S); soil+incorporated sod (SG); soil+incorporated sod+the anecic earthworm Aporrectodea longa (SGE). Nitrous oxide and carbon dioxide (CO2) fluxes were measured for 62\u00a0d. At the end of the incubation period, we determined N2O production under water-saturated conditions, potential denitrification and potential mineralization of the soil after removing the earthworms. Cumulative N2O and CO2 fluxes over 62\u00a0d from incorporated sod were highest for treatment HSGE (973\u00a0\u03bcg N2O-N and 302\u00a0mg CO2-C\u00a0kg\u22121 soil) and lowest for LSG (64\u00a0\u03bcg N2O-N and 188\u00a0mg CO2-C\u00a0kg\u22121 soil). Both cumulative fluxes were significantly different for soil moisture (p", "keywords": ["2. Zero hunger", "denitrification", "casts", "carbon", "permanent pastures", "04 agricultural and veterinary sciences", "15. Life on land", "fluxes", "6. Clean water", "nitrous-oxide emissions", "13. Climate action", "soil organic-matter", "community", "0401 agriculture", " forestry", " and fisheries", "denitrifying bacteria", "management"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2006.09.015"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2006.09.015", "name": "item", "description": "10.1016/j.soilbio.2006.09.015", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2006.09.015"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-02-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2007.03.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:14Z", "type": "Journal Article", "created": "2007-04-11", "title": "Earthworm Activity As A Determinant For N2o Emission From Crop Residue", "description": "Earthworm activity may have an effect on nitrous oxide (N2O) emissions from crop residue. However, the importance of this effect and its main controlling variables are largely unknown. The main objective of this study was to determine under which conditions and to what extent earthworm activity impacts N2O emissions from grass residue. For this purpose we initiated a 90-day (experiment I) and a 50-day (experiment II) laboratory mesocosm experiment using a Typic Fluvaquent pasture soil with silt loam texture. In all treatments, residue was applied, and emissions of NO and carbon dioxide (CO2) were measured. In experiment I the residue was applied on top of the soil surface and we tested (a) the effects of the anecic earthworm species Aporrectodea longa (Ude) vs. the epigeic species Lumbricus rubellus (Hoffmeister) and (b) interactions between earthworm activity and bulk density (1.06 vs. 1.61 g cm(-3)). In experiment II we tested the effect of L. rubellus after residue was artificially incorporated in the soil. In experiment 1, N2O emissions in the presence of earthworms significantly increased from 55.7 to 789.1 mu g N2O-N kg(-1) soil (L. rubellus; p <0.001) or to 227.2 mu g N2O-N kg(-1) soil (A. longa, p <0.05). This effect was not dependent on bulk density. However, if the residue was incorporated into the soil (experiment II) the earthworm effect disappeared and emissions were higher (1064.2 mu g N2O-N kg(-1) soil). At the end of the experiment and after removal of earthworms, a drying/wetting and freezing/thawing cycle resulted in significantly higher emissions of NO and CO2 from soil with prior presence of L. rubellus. Soil with prior presence of L. rubellus also had higher potential denitrification. We conclude that the main effect of earthworm activity on N2O emissions is through mixing residue into the soil, switching residue decomposition from an aerobic and low denitrification pathway to one with significant denitrification and NO production. Furthermore, A. longa activity resulted in more stable soil organic matter than L. rubellus. (c) 2007 Elsevier Ltd. All rights reserved.", "keywords": ["2. Zero hunger", "aporrectodea-turgida", "carbon", "octolasion-tyrtaeum", "lumbricus-terrestris", "04 agricultural and veterinary sciences", "denitrification rates", "15. Life on land", "13. Climate action", "nitrous-oxide emission", "soil organic-matter", "0401 agriculture", " forestry", " and fisheries", "agricultural soils", "denitrifying bacteria", "management"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2007.03.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2007.03.008", "name": "item", "description": "10.1016/j.soilbio.2007.03.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2007.03.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-08-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2009.12.015", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:17Z", "type": "Journal Article", "created": "2010-01-10", "title": "Interactions Between Residue Placement And Earthworm Ecological Strategy Affect Aggregate Turnover And N2o Dynamics In Agricultural Soil", "description": "Previous laboratory studies using epigeic and anecic earthworms have shown that earthworm activity can considerably increase nitrous oxide (N2O) emissions from crop residues in soils. However, the universality of this effect across earthworm functional groups and its underlying mechanisms remain unclear. The aims of this study were (i) to determine whether earthworms with an endogeic strategy also affect N2O emissions; (ii) to quantify possible interactions with epigeic earthworms; and (iii) to link these effects to earthworm-induced differences in selected soil properties. We initiated a 90-day 15N-tracer mesocosm study with the endogeic earthworm species Aporrectodea caliginosa (Savigny) and the epigeic species Lumbricus rubellus (Hoffmeister). 15N-labeled radish (Raphanus sativus cv. Adagio L.) residue was placed on top or incorporated into the loamy (Fluvaquent) soil. When residue was incorporated, only A. caliginosa significantly (p <0.01) increased cumulative N2O emissions from 1350 to 2223 \u00b5g N2O\u2013N kg-1 soil, with a corresponding increase in the turnover rate of macroaggregates. When residue was applied on top, L. rubellus significantly (p <0.001) increased emissions from 524 to 929 \u00b5g N2O\u2013N kg-1, and a significant (p <0.05) interaction between the two earthworm species increased emissions to 1397 \u00b5g N2O\u2013N kg-1. These effects coincided with an 84% increase in incorporation of residue 15N into the microaggregate fraction by A. caliginosa (p = 0.003) and an 85% increase in incorporation into the macroaggregate fraction by L. rubellus (p = 0.018). Cumulative CO2 fluxes were only significantly increased by earthworm activity (from 473.9 to 593.6 mg CO2\u2013C kg-1 soil; p = 0.037) in the presence of L. rubellus when residue was applied on top. We conclude that earthworm-induced N2O emissions reflect earthworm feeding strategies: epigeic earthworms can increase N2O emissions when residue is applied on top; endogeic earthworms when residue is incorporated into the soil by humans (tillage) or by other earthworm species. The effects of residue placement and earthworm addition are accompanied by changes in aggregate and SOM turnover, possibly controlling carbon, nitrogen and oxygen availability and therefore denitrification. Our results contribute to understanding the important but intricate relations between (functional) soil biodiversity and the soil greenhouse gas balance. Further research should focus on elucidating the links between the observed changes in soil aggregation and controls on denitrification, including the microbial community", "keywords": ["organic-matter dynamics", "2. Zero hunger", "crop residues", "denitrification", "ecosystem engineers", "casts", "no-tillage agroecosystems", "04 agricultural and veterinary sciences", "15. Life on land", "carbon-dioxide", "01 natural sciences", "630", "13. Climate action", "systems", "0401 agriculture", " forestry", " and fisheries", "nitrous-oxide fluxes", "management", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2009.12.015"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2009.12.015", "name": "item", "description": "10.1016/j.soilbio.2009.12.015", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2009.12.015"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-04-01T00:00:00Z"}}, {"id": "10.1016/j.still.2006.08.006", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:30Z", "type": "Journal Article", "created": "2006-09-27", "title": "Long-Term Impact Of Reduced Tillage And Residue Management On Soil Carbon Stabilization: Implications For Conservation Agriculture On Contrasting Soils", "description": "Residue retention and reduced tillage are both conservation agricultural management options that may enhance soil organic carbon (SOC) stabilization in tropical soils. Therefore, we evaluated the effects of long-term tillage and residue management on SOC dynamics in a Chromic Luvisol (red clay soil) and Areni-Gleyic Luvisol (sandy soil) in Zimbabwe. At the time of sampling the soils had been under conventional tillage (CT), mulch ripping (MR), clean ripping (CR) and tied ridging (TR) for 9 years. Soil was fully dispersed and separated into 212\u20132000 mm (coarse sand), 53\u2013212 mm (fine sand), 20\u201353 mm (coarse silt), 5\u201320 mm (fine silt) and 0\u20135 mm (clay) size fractions. The whole soil and size fractions were analyzed for C content. Conventional tillage treatments had the least amount of SOC, with 14.9 mg C g \ufffd 1 soil and 4.2 mg C g \ufffd 1 soil for the red clay and sandy soils, respectively. The highest SOC content was 6.8 mg C g \ufffd 1 soil in the sandy soil under MR, whereas for the red clay soil, TR had the highest SOC content of 20.4 mg C g \ufffd 1 soil. Organic C in the size fractions increased with decreasing size of the fractions. In both soils, the smallest response to management was observed in the clay size fractions, confirming that this size fraction is the most stable. The coarse sand-size fraction was most responsive to management in the sandy soil where MR had 42% more organic C than CR, suggesting that SOC contents of this fraction are predominantly controlled by amounts of C input. In contrast, the fine sand fraction was the most responsive fraction in the red clay soil with a 66% greater C content in the TR than CT. This result suggests that tillage disturbance is the dominant factor reducing C stabilization in a clayey soil, probably by reducing C stabilization within microaggregates. In conclusion, developing viable conservation agriculture practices to optimize SOC contents and long-term agroecosystem sustainability should prioritize the maintenance of C inputs (e.g. residue retention) to coarse textured soils, but should focus on the reduction of SOC decomposition (e.g. through reduced tillage) in fine textured soils. # 2006 Elsevier B.V. All rights reserved.", "keywords": ["organic-matter dynamics", "Soil management", "Conservation agriculture", "Residue management", "no-tillage", "continuous cultivation", "sudano-sahelian conditions", "loam soil", "Tropical agroecosystems", "Tillage", "Agricultural ecosystems", "conventional-tillage", "Field Scale", "Conservation tillage", "2. Zero hunger", "Tropical zones", "Soil organic matter", "microbial biomass", "Particulate organic matter (pom)", "Soil organic carbon", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "crop residue", "fractions", "0401 agriculture", " forestry", " and fisheries", "manure application"]}, "links": [{"href": "https://doi.org/10.1016/j.still.2006.08.006"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20and%20Tillage%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.still.2006.08.006", "name": "item", "description": "10.1016/j.still.2006.08.006", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.still.2006.08.006"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-06-01T00:00:00Z"}}, {"id": "10.1016/j.soilbio.2014.04.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:21Z", "type": "Journal Article", "created": "2014-04-21", "title": "Soil Carbon Stocks And Accumulation In Young Mangrove Forests", "description": "Abstract Mangrove reforestation and afforestation programs have been initiated in many countries recently to compensate for historical losses. At the same time, awareness of the high carbon (C) sink potential of mangrove forests is growing, and C sequestration is beginning to be considered among forestation goals. To assess whether and at what rate C accumulates in the soil of young mangrove forests following afforestation, we conducted a field study at an afforestation project in southeast China, including repeated measures taken over six years at two young forests (consisting of Kandelia obovata and Sonneratia apetala , aged 0\u20136 years old), and also a chronosequence of forests aged 0 (mudflat), 6 (both species), 20 ( S.\u00a0apetala ), and 70 ( K.\u00a0obovata ) years old. In the repeated measures, surface (0\u201310\u00a0cm) soil C concentration (%C of dry soil mass) increased significantly over six years, from 1.14% to 1.52% ( K.\u00a0obovata ) and 1.23% to 1.68% ( S.\u00a0apetala ). The rates of increase did not differ significantly between the two species, despite much greater biomass of S.\u00a0apetala . In the chronosequence, soil C also increased with age across sites, but only the 70-year-old forest was statistically different, suggesting that localized environmental differences may obscure age-related patterns in soil C. At all sites, soil C concentration for 1-m soil depth (0.62%\u20132.43%) was low compared to published global averages, yet the estimated soil C accumulation rate (155\u00a0g\u00a0C\u00a0m \u22122 \u00a0y \u22121 ) was comparable to published averages for mature forests. We supported this field study with a literature review of similar studies containing soil C concentration data from young mangrove forests: data compiled from 15 studies, comprising 31 sites, showed consistent, positive changes in soil C concentration with forest age, even in the youngest (", "keywords": ["SEDIMENT ACCUMULATION", "WETLAND SOILS", "SOUTHERN CHINA", "SEQUESTRATION", "15. Life on land", "01 natural sciences", "333", "FRENCH-GUIANA", "PLANTATIONS", "ORGANIC-MATTER", "AFFORESTATION", "BENTHIC DECOMPOSITION", "RESTORATION", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.soilbio.2014.04.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20Biology%20and%20Biochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.soilbio.2014.04.008", "name": "item", "description": "10.1016/j.soilbio.2014.04.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.soilbio.2014.04.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-08-01T00:00:00Z"}}, {"id": "10.1016/j.still.2005.02.028", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:28Z", "type": "Journal Article", "created": "2005-04-04", "title": "Soil Water Retention As Affected By Tillage And Residue Management In Semiarid Spain", "description": "Abstract Conservation tillage preserves soil water and this has been the main reason for its rapid dissemination in rainfed agriculture in semiarid climates. We determined the effects of conservation versus conventional tillage on available soil water capacity (AWC) and related properties at the end of 5 years of management on a clay loam calcic soil ( Calcic Haploxerept ) in semiarid northern Spain. No-tillage with (NTSB) and without stubble burning (NT), reduced chisel-plough tillage (RT) and conventional tillage with mouldboard plough (MT) were compared in rainfed barley monoculture. Bulk density ( \u03c1 b ), organic matter content (OM), soil water retention (SWR) at matric potentials of 0 to \u22121500\u00a0kPa, and soil water content (SWC) were determined in the driest year of the 5-year study period. Soil OM in the upper 0.15\u00a0m was significantly higher (13%) under NTSB, NT and RT than under MT. Soil \u03c1 b in the upper 0.15\u00a0m under NT and NTSB was greater than under RT and MT, but at a depth of 0.15\u20130.30\u00a0m was greater under RT than under the other treatments. Reorganisation of pore sizes due to tillage treatments affected AWC. Under RT and MT the largest percentage of the total soil porosity was occupied by pores >9\u00a0\u03bcm (equivalent pore diameter), in accordance with lower \u03c1 b . Available water capacity was greater with NT than with RT and MT. Higher SWC under conservation tillage systems (NT, NTSB and RT) than under MT was attributed mainly to greater AWC and to the mulching effect of crop residues. Crop yield in the driest year of the 5-year period was lowest under MT whereas no differences among treatments were found over the 5-year period. Stubble burning did not affect AWC nor barley yield. Tillage had a greater impact on soil properties and on crop yield than crop residue management.", "keywords": ["2. Zero hunger", "pore-size distribution", "no-tillage", "crop management", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "storage", "conservation tillage", "systems", "0401 agriculture", " forestry", " and fisheries", "root-growth", "physical-properties", "grain-yield", "organic-matter"]}, "links": [{"href": "https://doi.org/10.1016/j.still.2005.02.028"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20and%20Tillage%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.still.2005.02.028", "name": "item", "description": "10.1016/j.still.2005.02.028", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.still.2005.02.028"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-05-01T00:00:00Z"}}, {"id": "10.1016/j.still.2007.06.008", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:31Z", "type": "Journal Article", "created": "2007-07-10", "title": "Improved Legume Tree Fallows And Tillage Effects On Structural Stability And Infiltration Rates Of A Kaolinitic Sandy Soil From Central Zimbabwe", "description": "Improved legume tree fallows have great potential to increase soil organic carbon (SOC), aggregate stability and soil infiltration rates during the fallowing phase. However, persistence of the residual effects of improved fallowing on SOC, aggregate stability and infiltration rates, under different tillage systems in Zimbabwe is not well documented. The relationships between SOC, aggregate stability and infiltration in fallow-maize rotation systems are also not well documented. We therefore evaluated effects of tillage on SOC. aggregate stability and infiltration rates of a kaolinitic sandy soil during the cropping phase of an improved fallow-maize rotation system. Plots that were under legume tree fallows (Sesbania sesban; Acacia angustissitna), natural fallow (NF) and under continuous maize during the previous 2 years were divided into conventional tillage (CT) and no-till (NT) subplots soon after fallow termination. and maize was cropped in all plots during the following two seasons. Aggregate stability was investigated using water stable macroaggregation index (I-ma) water dispersible clay (WDC) and using the mean weight diameter (MWD) after different wetting procedures. Infiltration rates were determined using simulated rainfall at intensity of 35 mm h(-1) on 1 m(2) Plots. Soil organic carbon was significantly higher (P <0.05) under fallows than continuous maize. For the 0-5 cm depth SOC was 11.0, 10.0, 9.4 and 6.6 g kg(-1) for A.angustissima, S. sesban, NF and continuous maize, respectively, at fallow termination. After 2 years of cropping SOC was 8.0. 7.0. 6.1 and 5.9 g kg(-1) under CT and 9.1 9.0, 8.0 and 6.0 g kg-1 under NT for A. angustissima, S. sesban, NF and continuous maize, respectively. Aggregate stability was significantly greater (P <0.05) under fallows than under continuous maize and also higher under NT than under CT. The macroaggregation index (I-ma) for the 0-5 cm depth was 466, 416, 515 and 301 for A. angustissima. S. sesban, NF and continuous maize, respectively at fallow termination, decreasing to 385, 274, 286 and 255 under CT and 438, 300. 325 and 270 under NT, for A. angustissima, S. sesban, NF and continuous maize, respectively, after 2 years of cropping. Percent WDC was also significantly lower (P <0.05) in fallows than in continuous maize, and for the 0-5 cm it was 11, 10, 8 and 17 for A. angustissima, S. sesban, NF and continuous maize, respectively at fallow termination. After 2 years of cropping WDC (%) was 12, 14 15 and 17 under CT and 10, 12, 12 and 16 under NT for A. angustissima, S. sesban, NF and continuous maize, respectively. MWD also showed significantly higher (P <0.05) aggregate stability in fallows than in continuous maize. Water infiltration rates were significantly greater under fallows than continuous maize but these declined significantly during the cropping phase in plots that had been fallowed. In October 2000, infiltration rates in the A. angustissitna and NF plots were above 35 mm h(-1) as no runoff was observed. Steady-state infiltration rates were 24 mm h-1 in S. sesban and 5 rum h-1 for continuous maize after 30 min of rainfall simulations. After 2 years of cropping infiltration rates remained above 35 mm h-1 in A. angustissima plots, but declined to 18 and 8 mm h(-1) for NF, CT and NT respectively and 12 rum h(-1) for S. sesban, CT and NT. It is concluded that legume tree fallows improved SOC, aggregate stability and infiltration rates, but these benefits accrued during fallowing dereased significantly after 2 years of cropping following the termination of fallows. The decrease in SOC and aggregate stability was higher under CT than NT. Coppicing fallows of A. angustissima were the best long-term fallow species when integrated with NT as improved soil physical properties were maintained beyond 2 years of post-fallow cropping. (c) 2007 Elsevier B.V. All rights reserved.", "keywords": ["2. Zero hunger", "crop-rotation", "water", "no-tillage", "04 agricultural and veterinary sciences", "15. Life on land", "maize", "aggregate-associated carbon", "6. Clean water", "conventional-tillage", "systems", "0401 agriculture", " forestry", " and fisheries", "physical-properties", "fertility management", "organic-matter"]}, "links": [{"href": "https://doi.org/10.1016/j.still.2007.06.008"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20and%20Tillage%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.still.2007.06.008", "name": "item", "description": "10.1016/j.still.2007.06.008", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.still.2007.06.008"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-10-01T00:00:00Z"}}, {"id": "10.1016/j.still.2012.03.011", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:35Z", "type": "Journal Article", "created": "2012-04-25", "title": "Earthworm Activity And Soil Structural Changes Under Conservation Agriculture In Central Mexico", "description": "Crop residue mulching combined with zero tillage and crop rotation, known as conservation agriculture (CA), is being promoted as an alternative system to revert soil degradation in maize-based farming in the central highlands of Mexico. The goal of this paper was to determine the effects of CA vs. conventional tillage systems on soil quality, with a special focus on the role of earthworms in affecting the soil structure morphology, and on crop yield. For the conventional tillage system, the effect of crop residue retention (CONV\u00a0+\u00a0RES) was also compared to the conventional farmers\u2019 practice (residues removed; CONV). CA resulted in four times higher earthworm abundance when compared to CONV. Residue retention per se (CONV\u00a0+\u00a0RES) did not favor earthworm abundance. In all cases the earthworm community was dominated by exotic species. CA increased total N and soil organic C concentrations relative to CONV, but only at 0\u20135\u00a0cm soil depth. Nevertheless, the more pronounced vertical stratification of soil organic carbon content under CA favored soil surface aggregation and aggregate stability as expressed by the aggregate mean weight diameter after dry sieving (MWDds\u00a0=\u00a02.6\u00a0mm for CA and 1.6\u00a0mm for CONV) and wet sieving (MWDws\u00a0=\u00a00.9\u00a0mm and 0.6\u00a0mm, respectively). Also, CA improved topsoil water stable macroaggregation (WSA\u00a0=\u00a0415\u00a0mg\u00a0g\u22121) when compared to CONV (251\u00a0mg\u00a0g\u22121). Residue retention within conventional tillage (CONV\u00a0+\u00a0RES) led to small increases in topsoil aggregate stability (i.e. MWDds and WSA). Soil structural improvements were accompanied by a higher direct surface water infiltration. Micromorphological analysis of thin sections indicated a loose and highly biogenic soil microstructure in CA, whereas CONV was characterized by a physicogenic microstructure, despite similar soil bulk densities (SBD). SBD is thus a poor indicator of soil physical quality when comparing different tillage systems. Redundancy analysis illustrated that CA resulted in improvement in most parameters related to soil quality, especially at the soil surface, but significant yield increases were recorded only in 2004. CONV\u00a0+\u00a0RES lead to marginal improvements in soil quality with no yield increases.", "keywords": ["organic-matter dynamics", "2. Zero hunger", "carbon", "no-tillage", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "nitrogen", "6. Clean water", "quality", "wheat", "land-use", "systems", "0401 agriculture", " forestry", " and fisheries", "microaggregate formation", "management", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.still.2012.03.011"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Soil%20and%20Tillage%20Research", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.still.2012.03.011", "name": "item", "description": "10.1016/j.still.2012.03.011", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.still.2012.03.011"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-07-01T00:00:00Z"}}, {"id": "10.1017/s0014479708006443", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:46Z", "type": "Journal Article", "created": "2008-06-20", "title": "The Role Of Cattle Manure In Enhancing On-Farm Productivity, Macro- And Micro-Nutrient Uptake, And Profitability Of Maize In The Guinea Savanna", "description": "SUMMARYAn on-farm trial was conducted in the northern Guinea savanna of Nigeria, over a period of five years, with the objectives of quantifying the effects on maize of applying cattle manure in combination with synthetic fertilizer with regard to soil characteristics, yield, plant nutrition and profitability. Maize grain yield was significantly increased by the annual application of cattle manure, compared to maize receiving an equal amount of N through synthetic fertilizer, but only from the third year of the experiment. The application of manure resulted in higher soil Kjel N, Bray-I P and exchangeable K values, and an increased N utilization efficiency by maize, suggesting that yield-limiting factors other than N deficiencies were of lesser importance than in the treatment receiving sole inorganic fertilizer. Nutrients other than N applied via the manure, particularly P, K and/or B, may have contributed to the higher grain yields in treatments receiving manure. A partial budgeting analysis revealed that, over a 5-year period, investments in the application of manure, in combination with synthetic fertilizer, resulted in higher margins than the application of fertilizer alone. However, analyses of marginal rates of return of changes from low urea N to high urea N or additional manure applications suggested that it was more profitable to invest in additional urea than in organic manure in the first two years of the experiment. The results suggested that manure applications, even when applied at relatively high rates, did not serve as a quick fix to on-farm soil fertility problems, but over a longer period, manure applied in combination with synthetic fertilizers did provide a significant and profitable contribution to enhanced cereal production.
", "keywords": ["fertility", "northern nigeria", "2. Zero hunger", "livestock systems", "0401 agriculture", " forestry", " and fisheries", "west-africa", "continuous cultivation", "04 agricultural and veterinary sciences", "yield", "organic-matter", "management", "nitrogen", "soil"]}, "links": [{"href": "https://doi.org/10.1017/s0014479708006443"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Experimental%20Agriculture", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1017/s0014479708006443", "name": "item", "description": "10.1017/s0014479708006443", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1017/s0014479708006443"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-07-01T00:00:00Z"}}, {"id": "10.1023/a:1009728007279", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:17:56Z", "type": "Journal Article", "created": "2002-12-22", "title": "Nutrient Imitations In An Extant And Drained Poor Fen: Implications For Restoration", "description": "In a species-rich poor fen (Caricetum nigrae) and a species-poor drained fen, the difference in nutrient limitation of the vegetation was assessed in a full-factorial fertilization experiment with N, P and K. The results were compared to the nutrient ratios of plant material and to chemical analysis of the topsoil. A rewetting experiment with intact sods was carried out in the glasshouse and the results are discussed in view of restoration prospects of drained and degraded peatlands. In the undrained poor fen the above-ground biomass yield was N-limited while the vegetation of the drained fen was K-limited. Experimental rewetting of intact turf samples, taken in the drained site, did not change the biomass yield or the type of nutrient limitation. It was concluded that mire systems which have been subjected to prolonged drainage are inclined to pronounced K-deficiency, probably due to washing out of potassium and harvesting the standing crop. This may hamper restoration projects in degraded peat areas where nature conservation tries to restore species-rich vegetation types with a high nature value.
", "keywords": ["0106 biological sciences", "DECOMPOSITION", "restoration", "fen", "rewetting", "N-MINERALIZATION", "VEGETATION RESPONSE", "Caricetum nigrae", "potassium limitation", "04 agricultural and veterinary sciences", "WET MEADOWS", "15. Life on land", "01 natural sciences", "wetland", "SOIL", "DEFICIENCY", "ORGANIC-MATTER", "STANDS", "PHOSPHORUS", "fertilization", "nutrients", "ECOSYSTEMS", "0401 agriculture", " forestry", " and fisheries", "drainage"], "contacts": [{"organization": "van Duren, I.C., Boeye, Dirk, Grootjans, A.P.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1023/a:1009728007279"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1023/a:1009728007279", "name": "item", "description": "10.1023/a:1009728007279", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1023/a:1009728007279"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1997-11-01T00:00:00Z"}}, {"id": "10.1023/b:plso.0000020977.28048.fd", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:01Z", "type": "Journal Article", "created": "2004-03-24", "title": "Mineral N Dynamics, Leaching And Nitrous Oxide Losses Under Maize Following Two-Year Improved Fallows On A Sandy Loam Soil In Zimbabwe", "description": "The fate of the added N on a sandy loam soil was determined in an improved fallow - maize sequence field experiment in Zimbabwe. Pre-season mineral N was determined in 20 cm sections to 120 cm depth by soil auguring in seven land use systems. Thereafter, sequential soil auguring was done at two-week intervals in plots that previously had 2-year fallows of Acacia angustissima, Sesbania sesban and unfertilized maize to determine mineral N dynamics. Using the static chamber technique, N2O fluxes were also determined in the same plots. Pre-season NH4-N concentrations were > 12 kg N ha-1 in the 0-20 cm layer for treatments that had a pronounced litter layer. NO 3-N concentrations below 60 cm depth were 10 kg N ha-1 layer-1 in the control plots where maize had been cultivated each year. There was a flush of NO 3-N in the Sesbania and Acacia plots with the first rains. Topsoil NO3-N had increased to > 29 kg N ha-1 by the time of establishing the maize crop. This increase in NO3-N in the topsoil was not sustained as concentrations decreased rapidly within three weeks of maize planting, to amounts of 8.6 kg N ha-1 and 11.2 kg N ha -1 for the Sesbania and Acacia plots, respectively. Total NO 3-N leaching losses from the 0-40 cm layer ranged from 29-40 kg ha-1 for Sesbania and Acacia plots within two weeks when 104 mm rainfall was received to an already fully recharged soil profile. Nitrate then accumulated below the 40 cm depth during early season when the maize had not developed a sufficient root length density to effectively capture nutrients. At one week after planting maize, N2O fluxes of 12.3 g N2O-N ha-1 day-1 from Sesbania plots were about twice as high as those from Acacia, and about seven times the 1.6 g N2O-N ha -1 day-1 from maize monoculture. This was at the time when mineral N was at its peak in the topsoil. The unfertilized maize showed consistently low N2O emissions, which never exceeded 2 g N 2O-N ha-1 day-1 for all the eight sampling dates. The decrease of mineral N concentration in the topsoil resulted in reduced N2O fluxes, despite very high soil moisture conditions. Total N2O-N emissions were greatest for Sesbania plots with 0.3 kg ha -1 lost in 56 days. We conclude that, under high rainfall conditions, there is an inherent problem in managing mineral N originating from mineralization of organic materials as it accumulates at the onset of rains, and is susceptible to leaching before the crop root system develops. We did not quantify nitric oxide and N2 gas emissions, but it is unlikely that total gaseous N losses would be significant and contribute to poor N recovery that has been widely reported.", "keywords": ["2. Zero hunger", "emissions", "n2o", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "temporal variation", "fertilization", "land-use", "tillage", "0401 agriculture", " forestry", " and fisheries", "ch4 fluxes", "agricultural soils", "organic-matter", "management"], "contacts": [{"organization": "Chikowo, R., Mapfumo, P., Nyamugafata, P., Giller, K.E.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1023/b:plso.0000020977.28048.fd"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1023/b:plso.0000020977.28048.fd", "name": "item", "description": "10.1023/b:plso.0000020977.28048.fd", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1023/b:plso.0000020977.28048.fd"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-02-01T00:00:00Z"}}, {"id": "10.1029/2003gb002127", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:02Z", "type": "Journal Article", "created": "2004-03-15", "title": "More New Carbon In The Mineral Soil Of A Poplar Plantation Under Free Air Carbon Enrichment (Popface): Cause Of Increased Priming Effect?", "description": "In order to establish suitability of forest ecosystems for long\uffe2\uff80\uff90term storage of C, it is necessary to characterize the effects of predicted increased atmospheric CO2 levels on the pools and fluxes of C within these systems. Since most C held in terrestrial ecosystems is in the soil, we assessed the influence of Free Air Carbon Enrichment (FACE) treatment on the total soil C content (Ctotal) and incorporation of litter derived C (Cnew) into soil organic matter (SOM) in a fast growing poplar plantation. Cnew was estimated by the C3/C4 stable isotope method. Ctotal contents increased under control and FACE respectively by 12 and 3%, i.e., 484 and 107 gC/m2, while 704 and 926 gC/m2 of new carbon was sequestered under control and FACE during the experiment. We conclude that FACE suppressed the increase of Ctotal and simultaneously increased Cnew. We hypothesize that these opposite effects may be caused by a priming effect of the newly incorporated litter, where priming effect is defined as the stimulation of SOM decomposition caused by the addition of labile substrates.
", "keywords": ["mechanisms", "decomposition", "turnover", "terrestrial ecosystems", "04 agricultural and veterinary sciences", "15. Life on land", "system", "storage", "forest", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "organic-matter", "elevated atmospheric co2", "feedbacks"]}, "links": [{"href": "https://doi.org/10.1029/2003gb002127"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Biogeochemical%20Cycles", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1029/2003gb002127", "name": "item", "description": "10.1029/2003gb002127", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1029/2003gb002127"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-03-01T00:00:00Z"}}, {"id": "10.1038/nclimate1692", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:10Z", "type": "Journal Article", "created": "2013-01-31", "title": "Greenhouse-gas emissions from soils increased by earthworms", "description": "Earthworms play an essential part in determining the greenhouse-gas balance of soils worldwide but whether their activity moves soils towards being a net source or sink remains controversial. This Review of the overall effect of earthworms on the greenhouse-gas balance of soils suggests that although beneficial to fertility, earthworms tend to increase the net soil emissions of such gases.", "keywords": ["organic-matter dynamics", "2. Zero hunger", "ecosystem engineers", "suelo", "soil fertility", "n2o emission", "earthworms", "04 agricultural and veterinary sciences", "fertilidad del suelo", "endogeic earthworms", "15. Life on land", "carbon-dioxide", "microbial activity", "soil", "12. Responsible consumption", "crop residue", "13. Climate action", "greenhouse gases", "11. Sustainability", "gases de efecto invernadero", "0401 agriculture", " forestry", " and fisheries", "nitrous-oxide fluxes", "agricultural intensification", "nitrifier denitrification", "lombriz de tierra"]}, "links": [{"href": "https://doi.org/10.1038/nclimate1692"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Nature%20Climate%20Change", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/nclimate1692", "name": "item", "description": "10.1038/nclimate1692", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/nclimate1692"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-02-03T00:00:00Z"}}, {"id": "10.1038/ncomms13653", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:10Z", "type": "Journal Article", "created": "2016-11-29", "title": "Massive remobilization of permafrost carbon during post-glacial warming", "description": "AbstractRecent hypotheses, based on atmospheric records and models, suggest that permafrost carbon (PF-C) accumulated during the last glaciation may have been an important source for the atmospheric CO2 rise during post-glacial warming. However, direct physical indications for such PF-C release have so far been absent. Here we use the Laptev Sea (Arctic Ocean) as an archive to investigate PF-C destabilization during the last glacial\uffe2\uff80\uff93interglacial period. Our results show evidence for massive supply of PF-C from Siberian soils as a result of severe active layer deepening in response to the warming. Thawing of PF-C must also have brought about an enhanced organic matter respiration and, thus, these findings suggest that PF-C may indeed have been an important source of CO2 across the extensive permafrost domain. The results challenge current paradigms on the post-glacial CO2 rise and, at the same time, serve as a harbinger for possible consequences of the present-day warming of PF-C soils.The burial of terrestrial organic carbon (terrOC) in marine sediments contributes to the regulation of atmospheric CO2 on geological timescales and may mitigate positive feedback to present-day climate warming. However, the fate of terrOC in marine settings is debated, with uncertainties regarding its degradation during transport. Here, we employ compound-specific radiocarbon analyses of terrestrial biomarkers to determine cross-shelf transport times. For the World\uffe2\uff80\uff99s largest marginal sea, the East Siberian Arctic shelf, transport requires 3600\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff89300 years for the 600\uffe2\uff80\uff89km from the Lena River to the Laptev Sea shelf edge. TerrOC was reduced by ~85% during transit resulting in a degradation rate constant of 2.4\uffe2\uff80\uff89\uffc2\uffb1\uffe2\uff80\uff890.6\uffe2\uff80\uff89kyr\uffe2\uff88\uff921. Hence, terrOC degradation during cross-shelf transport constitutes a carbon source to the atmosphere over millennial time. For the contemporary carbon cycle on the other hand, slow terrOC degradation brings considerable attenuation of the decadal-centennial permafrost carbon-climate feedback caused by global warming.Identifying the global drivers of soil priming is essential to understanding C cycling in terrestrial ecosystems. We conducted a survey of soils across 86 globally-distributed locations, spanning a wide range of climates, biotic communities, and soil conditions, and evaluated the apparent soil priming effect using13C-glucose labeling. Here we show that the magnitude of the positive apparent priming effect (increase in CO2release through accelerated microbial biomass turnover) was negatively associated with SOC content and microbial respiration rates. Our statistical modeling suggests that apparent priming effects tend to be negative in more mesic sites associated with higher SOC contents. In contrast, a single-input of labile C causes positive apparent priming effects in more arid locations with low SOC contents. Our results provide solid evidence that SOC content plays a critical role in regulating apparent priming effects, with important implications for the improvement of C cycling models under global change scenarios.Globally, inland waters emit over 2 Pg of carbon per year as carbon dioxide, of which the majority originates from streams and rivers. Despite the global significance of fluvial carbon dioxide emissions, little is known about their diel dynamics. Here we present a large-scale assessment of day- and night-time carbon dioxide fluxes at the water-air interface across 34 European streams. We directly measured fluxes four times between October 2016 and July 2017 using drifting chambers. Median fluxes are 1.4 and 2.1\uffe2\uff80\uff89mmol\uffe2\uff80\uff89m\uffe2\uff88\uff922 h\uffe2\uff88\uff921 at midday and midnight, respectively, with night fluxes exceeding those during the day by 39%. We attribute diel carbon dioxide flux variability mainly to changes in the water partial pressure of carbon dioxide. However, no consistent drivers could be identified across sites. Our findings highlight widespread day-night changes in fluvial carbon dioxide fluxes and suggest that the time of day greatly influences measured carbon dioxide fluxes across European streams.Quantifying global patterns of terrestrial nitrogen (N) cycling is central to predicting future patterns of primary productivity, carbon sequestration, nutrient fluxes to aquatic systems and climate forcing. With limited direct measures of soil N cycling at the global scale, syntheses of the 15N:14N ratio of soil organic matter across climate gradients provide key insights into understanding global patterns of N cycling. In synthesizing data from over 6000 soil samples, we show strong global relationships among soil N isotopes, mean annual temperature (MAT), mean annual precipitation (MAP) and the concentrations of organic carbon and clay in soil. In both hot ecosystems and dry ecosystems, soil organic matter was more enriched in 15N than in corresponding cold ecosystems or wet ecosystems. Below a MAT of 9.8\uffc2\uffb0C, soil \uffce\uffb415N was invariant with MAT. At the global scale, soil organic C concentrations also declined with increasing MAT and decreasing MAP. After standardizing for variation among mineral soils in soil C and clay concentrations, soil \uffce\uffb415N showed no consistent trends across global climate and latitudinal gradients. Our analyses could place new constraints on interpretations of patterns of ecosystem N cycling and global budgets of gaseous N loss.
", "keywords": ["N-15 Natural-Abundance", "550", "Ecosystem ecology", "TROPICAL FORESTS", "Organic chemistry", "Suelo", "Nitrogen cycle", "01 natural sciences", "Nutrient cycle", "cycle de l'azote", "CARBON", "Agricultural and Biological Sciences", "Soil", "Terrestrial ecosystem", "Isotopes", "https://purl.org/becyt/ford/1.6", "Soil water", "SDG 13 - Climate Action", "N-15 NATURAL-ABUNDANCE", "Climate change", "croisement de donn\u00e9es", "Milieux et Changements globaux", "SDG 15 \u2013 Leben an Land", "Global change", "SDG 15 - Life on Land", "2. Zero hunger", "106022 Mikrobiologie", "Climatic Factors", "Tropical Forests", "Ecology", "Geography", "Nitr\u00f3geno", "Nutrient Cycling", "FRACTIONATION", "Litter Decomposition", "ECOSYSTEM ECOLOGY", "Life Sciences", "ecosystem ecology", "Cycling", "Forestry", "Is\u00f3topos", "Carbon cycle", "04 agricultural and veterinary sciences", "Nitrogen Cycle", "Soil carbon", "6. Clean water", "Organic-Matter", "Earth and Planetary Sciences", "ORGANIC-MATTER", "Chemistry", "PRECIPITATION", "SDG 13 \u2013 Ma\u00dfnahmen zum Klimaschutz", "Physical Sciences", "106022 Microbiology", "carbone du sol", "Stable Isotope Analysis of Groundwater and Precipitation", "Ecosystem Functioning", "570", "STABLE ISOTOPE", "Biogeochemical Cycling of Nutrients in Aquatic Ecosystems", "Stable isotope analysis", "Nitrogen", "[SDE.MCG]Environmental Sciences/Global Changes", "Soil Science", "stable isotope analysis;ecosystem ecology", "Article", "Environmental science", "LITTER DECOMPOSITION", "sol min\u00e9ral", "INORGANIC NITROGEN", "Geochemistry and Petrology", "stable isotope analysis", "Carbono", "Environmental Chemistry", "Factores Clim\u00e1ticos", "https://purl.org/becyt/ford/1", "Biology", "Ecosystem", "0105 earth and related environmental sciences", "Soil science", "Soil organic matter", "Soil Fertility", "climat", "AVAILABILITY", "Nitrogen Dynamics", "15. Life on land", "Carbon", "Inorganic", "NITROGEN", "MODEL", "[SDE.MCG] Environmental Sciences/Global Changes", "13. Climate action", "FOS: Biological sciences", "Environmental Science", "PATTERNS", "0401 agriculture", " forestry", " and fisheries", "Soil Carbon Dynamics and Nutrient Cycling in Ecosystems"]}, "links": [{"href": "https://scholars.unh.edu/context/faculty_pubs/article/1042/viewcontent/srep08280.pdf"}, {"href": "https://edoc.unibas.ch/37215/1/srep08280.pdf"}, {"href": "https://doi.org/10.1038/srep08280"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Scientific%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1038/srep08280", "name": "item", "description": "10.1038/srep08280", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1038/srep08280"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-02-06T00:00:00Z"}}, {"id": "10.1046/j.1365-2486.2001.00388.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:25Z", "type": "Journal Article", "created": "2003-03-11", "title": "Chemistry And Decomposition Of Litter From Populus Tremuloides Michaux Grown At Elevated Atmospheric Co2 And Varying N Availability", "description": "SummaryIt has been hypothesized that greater production of total nonstructural carbohydrates (TNC) in foliage grown under elevated atmospheric carbon dioxide (CO2) will result in higher concentrations of defensive compounds in tree leaf litter, possibly leading to reduced rates of decomposition and nutrient cycling in forest ecosystems of the future. To evaluate the effects of elevated atmospheric CO2on litter chemistry and decomposition, we performed a 111 day laboratory incubation with leaf litter of trembling aspen (Populus tremuloidesMichaux) produced at 36\uffe2\uff80\uff83Pa and 56\uffe2\uff80\uff83Pa CO2and two levels of soil nitrogen (N) availability. Decomposition was quantified as microbially respired CO2and dissolved organic carbon (DOC) in soil solution, and concentrations of nonstructural carbohydrates, N, carbon (C), and condensed tannins were monitored throughout the incubation. Growth under elevated atmospheric CO2did not significantly affect initial litter concentrations of TNC, N, or condensed tannins. Rates of decomposition, measured as both microbially respired CO2and DOC did not differ between litter produced under ambient and elevated CO2. Total C lost from the samples was 38\uffe2\uff80\uff83mg\uffe2\uff80\uff83g\uffe2\uff88\uff921litter as respired CO2and 138\uffe2\uff80\uff83mg\uffe2\uff80\uff83g\uffe2\uff88\uff921litter as DOC, suggesting short\uffe2\uff80\uff90term pulses of dissolved C in soil solution are important components of the terrestrial C cycle. We conclude that litter chemistry and decomposition in trembling aspen are minimally affected by growth under higher concentrations of CO2.
", "keywords": ["Ecology and Evolutionary Biology", "carbohydrates", "Quaking aspen", "forest-soil", "litter-plant", "nitrogen", "nitrogen-", "Microlysimeter", "soil-chemistry", "cycling-", "populus-tremuloides", "Geology and Earth Sciences", "Soil Carbon", "Microbiology of soils", "Carbon cycle", "04 agricultural and veterinary sciences", "GLOBAL-ECOLOGY", "chemical-composition", "Organic-matter", "soil-solution", "nutrient-availability", "Tannin", "leaf-litter", "Science", "decomposition-", "Nutrient enrichment", "Carbohydrates", "carbohydrates-", "respiration-", "carbon-dioxide-enrichment", "Nitrogen in soil", "michigan-", "carbon sinks", "C", "Nutrient budget of forests", "Litter", "Populus tremuloides", "Global Change", "tannins-", "Decomposition", "forest-litter", "Foliage", "Carbon dioxide effects on forest litter", "Climatic changes", "15. Life on land", "carbon-nitrogen-ratio", "Forest litter decomposition", "N Ratio", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "microbial-activities", "nitrogen-content"]}, "links": [{"href": "https://doi.org/10.1046/j.1365-2486.2001.00388.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1046/j.1365-2486.2001.00388.x", "name": "item", "description": "10.1046/j.1365-2486.2001.00388.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1046/j.1365-2486.2001.00388.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2001-01-01T00:00:00Z"}}, {"id": "10.1080/00103624.2013.790406", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:41Z", "type": "Journal Article", "created": "2013-04-16", "title": "Influence Of Soil Management And Crop Rotation On Physical Properties In A Long-Term Experiment In Parana, Brazil", "description": "This work aims to evaluate the soil physical properties affected by cover crop rotation and soil management in a long-term experiment in southern Brazil. The experiment was established in 1986, with treatments combining six winter treatments and two tillage systems (conventional and no tillage). Bulk density, porosity, aggregate-size class distribution, and organic carbon content of the aggregates were determined at six depths. Bulk density was not affected by tillage systems and winter treatments. The soil disturbance by plowing enhanced the macroporosity, decreased the microporosity, and promoted the formation of smaller aggregate size, in comparison to no tillage. Apart from the soil management, all winter species increased the greater aggregate-size classes, mean weight diameter, geometric mean diameter, and aggregate stability index compared to the fallow treatments. At the no-till treatments, the greater part of sequestered carbon into the soil was stored into the lower and bigger soil aggregates.", "keywords": ["STABILIZATION", "[SDV]Life Sciences [q-bio]", "cover crop", "AGGREGATE", "PARTICULATE", "ORGANIC-MATTER DYNAMICS", "630", "CARBON", "soil organic matter", "Farm nutrient management", "CONSERVATION TILLAGE", "Conservation tillage", "2. Zero hunger", "CULTIVATED SOILS", "04 agricultural and veterinary sciences", "15. Life on land", "sustainability", "Soil tillage", "6. Clean water", "[SDV] Life Sciences [q-bio]", "Crop combinations and interactions", "subtropical soil", "0401 agriculture", " forestry", " and fisheries", "NO-TILLAGE", "CONVENTIONAL-TILLAGE", "FRACTIONS"]}, "links": [{"href": "https://doi.org/10.1080/00103624.2013.790406"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Communications%20in%20Soil%20Science%20and%20Plant%20Analysis", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1080/00103624.2013.790406", "name": "item", "description": "10.1080/00103624.2013.790406", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1080/00103624.2013.790406"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-07-20T00:00:00Z"}}, {"id": "10.1111/j.1365-2389.2006.00798.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:28Z", "type": "Journal Article", "created": "2006-03-24", "title": "Soil Susceptibility To Compaction By Wheeling As A Function Of Some Properties Of A Silty Soil As Affected By The Tillage System", "description": "SummaryThe recent increase in conservation tillage offers the possible benefit of decreasing soil compaction risk by wheeling. Excessive compaction has damaging consequences for agriculture and the environment. Direct drilling is likely to change soil porosity and soil carbon content in the long term. This paper analyses the effect of both of these factors on soil mechanical strength through measurements of the compression index Cc, the swelling index Cs, and the pre\uffe2\uff80\uff90compression stress pc*. Oedometer tests were performed on remoulded soils taken from an experiment with a wheat\uffe2\uff80\uff90maize rotation, where three soil tillage systems were compared over 31 years: annual mouldboard ploughing, superficial tillage (10\uffe2\uff80\uff83cm depth), and no tillage. The results show that initial structural porosity (i.e. macro\uffe2\uff80\uff90porosity) increased Cc slightly and decreased pc* exponentially. Consequently, the risk of compaction in the direct drilling systems should decrease when a decrease in soil porosity is found, compared with conventional systems. However, this change in soil porosity in direct drilling is not always observed. The other variables that can be influenced by tillage system, i.e. carbon content or soil moisture, have also been examined to assess the possible benefit of direct drilling on soil compaction risk. For soils with similar initial structural porosity, our results show that the increase in carbon content of the superficial soil layers in direct drilling systems tends to increase the soil\uffe2\uff80\uff99s susceptibility to compaction by increasing Cc in wet conditions and by decreasing pc* in dry conditions. Moisture conditions at wheeling determine the degree of soil compaction as a function of tillage system.
Sensibilit\uffc3\uffa9 des sols au tassement par les engins agricoles: analyse de l\uffe2\uff80\uff99effet du travail du sol pour un sol limoneux
R\uffc3\uffa9sum\uffc3\uffa9L\uffe2\uff80\uff99adoption croissante du semis direct pourrait permettre de diminuer le risque de tassement des sols lors du passage des engins agricoles. Les tassements s\uffc3\uffa9v\uffc3\uffa8res du sol ont des cons\uffc3\uffa9quences importantes sur l\uffe2\uff80\uff99environnement et l\uffe2\uff80\uff99agriculture. A long\uffe2\uff80\uff90terme, la technique du semis direct modifie la porosit\uffc3\uffa9 et la teneur en carbone du sol. Cet article propose de quantifier l\uffe2\uff80\uff99effet de ces deux facteurs sur la r\uffc3\uffa9sistance m\uffc3\uffa9caniques du sol par des mesures de l\uffe2\uff80\uff99indice de compression Cc, de l\uffe2\uff80\uff99indice recompression Cs et de la pression de preconsolidation pc*. Des essais oedom\uffc3\uffa9triques ont \uffc3\uffa9t\uffc3\uffa9 r\uffc3\uffa9alis\uffc3\uffa9s sur des \uffc3\uffa9chantillons de sols remani\uffc3\uffa9s (sol limoneux) pr\uffc3\uffa9lev\uffc3\uffa9s sur un essai comparant trois syst\uffc3\uffa8mes de travail du sol depuis 31 ans pour une rotation bl\uffc3\uffa9/ma\uffc3\uffafs: labour, travail superficiel (10\uffe2\uff80\uff83cm), semis direct. Les r\uffc3\uffa9sultats montrent que la macroporosit\uffc3\uffa9 appel\uffc3\uffa9e porosit\uffc3\uffa9 structurale du sol induit une faible augmentation de Cc et une d\uffc3\uffa9croissance exponentielle de pc*. Ceci doit diminuer le risque de tassement dans les syst\uffc3\uffa8mes o\uffc3\uffb9 le semis direct s\uffe2\uff80\uff99accompagne d\uffe2\uff80\uff99une r\uffc3\uffa9duction de la porosit\uffc3\uffa9. Cette \uffc3\uffa9volution de la porosit\uffc3\uffa9 en semis direct n\uffe2\uff80\uff99est cependant pas syst\uffc3\uffa9matique. L\uffe2\uff80\uff99effet des autres facteurs doit \uffc3\uffaatre consid\uffc3\uffa9r\uffc3\uffa9, \uffc3\uffa0 savoir teneur en eau et teneur en carbone. Nos r\uffc3\uffa9sultats montrent que pour des sols de m\uffc3\uffaame porosit\uffc3\uffa9 structurale, l\uffe2\uff80\uff99augmentation de la teneur en carbone des horizons superficiels dans les syst\uffc3\uffa8mes en semis direct a tendance \uffc3\uffa0 augmenter la sensibilit\uffc3\uffa9 du sol au tassement par une augmentation Cc en conditions humides et une diminution de pc* en conditions s\uffc3\uffa8ches. Les conditions hydriques d\uffe2\uff80\uff99intervention ont donc un effet d\uffc3\uffa9terminant sur la sensibilit\uffc3\uffa9 du sol au tassement selon les modalit\uffc3\uffa9s de travail du sol.
", "keywords": ["WATER-CONTENT", "2. Zero hunger", "UNIAXIAL COMPACTION", "POROSITY", "04 agricultural and veterinary sciences", "15. Life on land", "INDICE DE COMPRESSION", "6. Clean water", "ORGANIC-MATTER", "HYDRAULIC-PROPERTIES", "DENSITY", "STRENGTH", "0401 agriculture", " forestry", " and fisheries", "COMPRESSION", "AGRICULTURAL SOILS", "ARABLE SOILS", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2389.2006.00798.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/European%20Journal%20of%20Soil%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1365-2389.2006.00798.x", "name": "item", "description": "10.1111/j.1365-2389.2006.00798.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2389.2006.00798.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2007-01-31T00:00:00Z"}}, {"id": "10.1088/1748-9326/aaeae7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:18:54Z", "type": "Journal Article", "created": "2018-10-24", "title": "Using research networks to create the comprehensive datasets needed to assess nutrient availability as a key determinant of terrestrial carbon cycling", "description": "Open AccessA wide range of research shows that nutrient availability strongly influences terrestrial carbon (C) cycling and shapes ecosystem responses to environmental changes and hence terrestrial feedbacks to climate. Nonetheless, our understanding of nutrient controls remains far from complete and poorly quantified, at least partly due to a lack of informative, comparable, and accessible datasets at regional-to-global scales. A growing research infrastructure of multi-site networks are providing valuable data on C fluxes and stocks and are monitoring their responses to global environmental change and measuring responses to experimental treatments. These networks thus provide an opportunity for improving our understanding of C-nutrient cycle interactions and our ability to model them. However, coherent information on how nutrient cycling interacts with observed C cycle patterns is still generally lacking. Here, we argue that complementing available C-cycle measurements from monitoring and experimental sites with data characterizing nutrient availability will greatly enhance their power and will improve our capacity to forecast future trajectories of terrestrial C cycling and climate. Therefore, we propose a set of complementary measurements that are relatively easy to conduct routinely at any site or experiment and that, in combination with C cycle observations, can provide a robust characterization of the effects of nutrient availability across sites. In addition, we discuss the power of different observable variables for informing the formulation of models and constraining their predictions. Most widely available measurements of nutrient availability often do not align well with current modelling needs. This highlights the importance to foster the interaction between the empirical and modelling communities for setting future research priorities.", "keywords": ["Global vegetation models", "550", "manipulation experiments", "Terrestrial-Aquatic Linkages", "Kolefni", "01 natural sciences", "Nutrient cycle", "Agricultural and Biological Sciences", "Terrestrial ecosystem", "SDG 13 - Climate Action", "Climate change", "Jar\u00f0vegur", "Environmental resource management", "Global change", "General Environmental Science", "SDG 15 - Life on Land", "Carbon-nutrient cycle interactions", "2. Zero hunger", "Data syntheses", "Global and Planetary Change", "Ecology", "Geography", "Physics", "Life Sciences", "Application of Stable Isotopes in Trophic Ecology", "Cycling", "Carbon cycle", "04 agricultural and veterinary sciences", "Chemistry", "ORGANIC-MATTER", "Archaeology", "Physical Sciences", "Nutrient availability", "NET PRIMARY PRODUCTIVITY", "Ecosystem Functioning", "570", "LAND", "TROPICAL RAIN-FOREST", "carbon-nutrient cycle interactions", "data syntheses", "Soil Science", "Environmental science", "[SDU] Sciences of the Universe [physics]", "SOIL-PHOSPHORUS AVAILABILITY", "global vegetation models", "SDG 3 - Good Health and Well-being", "nutrients", "USE EFFICIENCY", "SDG 7 - Affordable and Clean Energy", "GLOBAL CHANGE", "Key (lock)", "Biology", "Ecosystem", "Manipulation experiments", "0105 earth and related environmental sciences", "Renewable Energy", " Sustainability and the Environment", "Ecosystem Structure", "Public Health", " Environmental and Occupational Health", "Nutrients", "15. Life on land", "Computer science", "[SDU]Sciences of the Universe [physics]", "13. Climate action", "ECOSYSTEM RESPONSES", "FOS: Biological sciences", "Global Methane Emissions and Impacts", "Environmental Science", "0401 agriculture", " forestry", " and fisheries", "NITROGEN-FIXATION", "Soil Carbon Dynamics and Nutrient Cycling in Ecosystems", "Nutrient Limitation", "ELEVATED CO2", "Nutrient"]}, "links": [{"href": "https://doi.org/10.1088/1748-9326/aaeae7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Environmental%20Research%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1088/1748-9326/aaeae7", "name": "item", "description": "10.1088/1748-9326/aaeae7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1088/1748-9326/aaeae7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-12-07T00:00:00Z"}}, {"id": "10.1111/1365-2745.12593", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:13Z", "type": "Journal Article", "created": "2016-04-22", "title": "Drought History Affects Grassland Plant And Microbial Carbon Turnover During And After A Subsequent Drought Event", "description": "Summary
Drought periods are projected to become more severe and more frequent in many European regions. While effects of single strong droughts on plant and microbial carbon (C) dynamics have been studied in some detail, impacts of recurrent drought events are still little understood.
We tested whether the legacy of extreme experimental drought affects responses of plant and microbial C and nitrogen (N) turnover to further drought and rewetting. In a mountain grassland, we conducted a 13C pulse\uffe2\uff80\uff90chase experiment during a naturally occurring drought and rewetting event in plots previously exposed to experimental droughts and in ambient controls (AC). After labelling, we traced 13C below\uffe2\uff80\uff90ground allocation and incorporation into soil microbes using phospholipid fatty acid biomarkers.
Drought history (DH) had no effects on the standing shoot and fine root plant biomass. However, plants with experimental DH displayed decreased shoot N concentrations and increased fine root N concentrations relative to those in AC. During the natural drought, plants with DH assimilated and allocated less 13C below\uffe2\uff80\uff90ground; moreover, fine root respiration was reduced and not fuelled by fresh C compared to plants in AC.
Regardless of DH, microbial biomass remained stable during natural drought and rewetting. Although microbial communities initially differed in their composition between soils with and without DH, they responded to the natural drought and rewetting in a similar way: gram\uffe2\uff80\uff90positive bacteria increased, while fungal and gram\uffe2\uff80\uff90negative bacteria remained stable. In soils with DH, a strongly reduced uptake of recent plant\uffe2\uff80\uff90derived 13C in microbial biomarkers was observed during the natural drought, pointing to a smaller fraction of active microbes or to a microbial community that is less dependent on plant C.
Synthesis. Drought history can induce changes in above\uffe2\uff80\uff90 vs. below\uffe2\uff80\uff90ground plant N concentrations and affect the response of plant C turnover to further droughts and rewetting by decreasing plant C uptake and below\uffe2\uff80\uff90ground allocation. DH does not affect the responses of the microbial community to further droughts and rewetting, but alters microbial functioning, particularly the turnover of recent plant\uffe2\uff80\uff90derived carbon, during and after further drought periods.
", "keywords": ["0301 basic medicine", "plant-soil (below-ground) interactions", "NITROGEN TURNOVER", "Biomass Allocation", "microbial community composition", "Negibacteria", "drought", "phospholipid fatty acid", "nitrogen", "Microbial community composition", "Plant\u2013Soil (Below\u2010ground) Interactions", "Recovery", "ROOT RESPIRATION", "Plant-soil (below-ground) interactions", "CLIMATE EXTREMES", "C pulse labelling", "Below-ground carbon allocation", "2. Zero hunger", "106022 Mikrobiologie", "0303 health sciences", "SOIL INTERACTIONS", "below-ground carbon allocation", "C-13 pulse labelling", "Grassland", "6. Clean water", "Europe", "Phospholipid", "ORGANIC-MATTER", "Mountain Region", "Posibacteria", "DIOXIDE PULSES", "Phospholipid fatty acid", "106022 Microbiology", "Root/shoot Ratio", "Belowground Biomass", "Ecosystem Resilience", "Nitrogen", "Microbial Community", "Carbon Isotope", "Soil-vegetation Interaction", "recovery", "SUMMER DROUGHT", "03 medical and health sciences", "Rewetting", "Community Composition", "plant\u2013soil (below-ground) interactions", "WATER-STRESS", "resilience", "Drought", "Resilience", "RESILIENCE", "15. Life on land", "Turnover", "Microbial Activity", "13. Climate action", "Fatty Acid", "RESPONSES"]}, "links": [{"href": "https://doi.org/10.1111/1365-2745.12593"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/1365-2745.12593", "name": "item", "description": "10.1111/1365-2745.12593", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/1365-2745.12593"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-05-24T00:00:00Z"}}, {"id": "10.1093/treephys/25.11.1399", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:01Z", "type": "Journal Article", "created": "2012-01-20", "title": "Net Carbon Storage In A Poplar Plantation (Popface) After Three Years Of Free-Air Co2 Enrichment", "description": "A high-density plantation of three genotypes of Populus was exposed to an elevated concentration of carbon dioxide ([CO(2)]; 550 micromol mol(-1)) from planting through canopy closure using a free-air CO(2) enrichment (FACE) technique. The FACE treatment stimulated gross primary productivity by 22 and 11% in the second and third years, respectively. Partitioning of extra carbon (C) among C pools of different turnover rates is of critical interest; thus, we calculated net ecosystem productivity (NEP) to determine whether elevated atmospheric [CO(2)] will enhance net plantation C storage capacity. Free-air CO(2) enrichment increased net primary productivity (NPP) of all genotypes by 21% in the second year and by 26% in the third year, mainly because of an increase in the size of C pools with relatively slow turnover rates (i.e., wood). In all genotypes in the FACE treatment, more new soil C was added to the total soil C pool compared with the control treatment. However, more old soil C loss was observed in the FACE treatment compared with the control treatment, possibly due to a priming effect from newly incorporated root litter. FACE did not significantly increase NEP, probably as a result of this priming effect.", "keywords": ["0106 biological sciences", "microbial biomass", "turnover", "dynamics", "populus", "temperature response functions", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Plant Roots", "01 natural sciences", "Trees", "dioxide enrichment", "forest", "Soil", "Populus", "limited photosynthesis", "soil organic-matter", "0401 agriculture", " forestry", " and fisheries", "CO2", "Biomass", "elevated atmospheric co2"]}, "links": [{"href": "https://doi.org/10.1093/treephys/25.11.1399"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Tree%20Physiology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1093/treephys/25.11.1399", "name": "item", "description": "10.1093/treephys/25.11.1399", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1093/treephys/25.11.1399"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-11-01T00:00:00Z"}}, {"id": "10.1111/1365-2435.14178", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:12Z", "type": "Journal Article", "created": "2022-09-10", "title": "Nitrogen loading enhances phosphorus limitation in terrestrial ecosystems with implications for soil carbon cycling", "description": "Abstract
Increased human\uffe2\uff80\uff90derived nitrogen (N) loading in terrestrial ecosystems has caused widespread ecosystem\uffe2\uff80\uff90level phosphorus (P) limitation. In response, plants and soil micro\uffe2\uff80\uff90organisms adopt a series of P\uffe2\uff80\uff90acquisition strategies to offset N loading\uffe2\uff80\uff90induced P limitation. Many of these strategies impose costs on carbon (C) allocation by plants and soil micro\uffe2\uff80\uff90organisms; however, it remains unclear how P\uffe2\uff80\uff90acquisition strategies affect soil C cycling. Herein, we review the literature on the effects of N loading on P limitation and outline a conceptual overview of how plant and microbial P\uffe2\uff80\uff90acquisition strategies may affect soil organic carbon (SOC) stabilization and decomposition in terrestrial ecosystems.
Excessive input of N significantly enhances plant biomass production, soil acidification, and produces plant litterfall with high N/P ratios, which can aggravate ecosystem\uffe2\uff80\uff90level P limitation.
Long\uffe2\uff80\uff90term N loading can cause plants and soil micro\uffe2\uff80\uff90organisms to alter their functional traits to increase P acquisition. Plants can release carboxylate exudates and phosphatases, modify root morphological traits, facilitate the formation of symbiotic associations with mycorrhizal fungi and stimulate the abundance of P\uffe2\uff80\uff90mineralizing and P\uffe2\uff80\uff90solubilizing micro\uffe2\uff80\uff90organisms. Releasing carboxylate exudates and phosphatases could accelerate SOC decomposition, whereas changing symbiotic associations and root morphological traits (e.g. an increase in fine root length) may contribute to higher SOC stabilization. Increased relative abundances of P\uffe2\uff80\uff90mineralizing and P\uffe2\uff80\uff90solubilizing bacteria can accelerate P mining and SOC decay, which may decrease microbial C use efficiency and subsequently lower SOC sequestration.
The trade\uffe2\uff80\uff90offs between different plant P\uffe2\uff80\uff90acquisition strategies under N loading should be among future research priorities due to their cascading impacts on soil C storage. Quantifying ecosystem thresholds for P adaption to increased N loading is important because P\uffe2\uff80\uff90acquisition strategies are effective when N loading is below the N threshold. Moreover, understanding the response of P\uffe2\uff80\uff90acquisition strategies at different levels of native soil N availability could provide insight to divergent P\uffe2\uff80\uff90acquisition strategies across sites and ecosystems. Altogether, P\uffe2\uff80\uff90acquisition strategies should be explicitly considered in Earth System Models to generate more realistic predictions of the effects of N loading on soil C cycling.
Read the free Plain Language Summary for this article on the Journal blog.More than half of the cultivation\uffe2\uff80\uff90induced carbon loss from agricultural soils could be restored through improved management. To incentivise carbon sequestration, the potential of improved practices needs to be verified. To date, there is sparse empirical evidence of carbon sequestration through improved practices in East\uffe2\uff80\uff90Africa. Here, we show that agroforestry and restrained grazing had a greater stock of soil carbon than their bordering pair\uffe2\uff80\uff90matched controls, but the difference was less obvious with terracing. The controls were treeless cultivated fields for agroforestry, on slopes not terraced for terracing, and permanent pasture for restrained grazing, representing traditionally managed agricultural practices dominant in the case regions. The gain by the improved management depended on the carbon stocks in the control plots. Agroforestry for 6\uffe2\uff80\uff9320\uffc2\uffa0years led to 11.4 Mg\uffc2\uffa0ha\uffe2\uff88\uff921 and restrained grazing for 6\uffe2\uff80\uff9317\uffc2\uffa0years to 9.6\uffc2\uffa0Mg\uffc2\uffa0ha\uffe2\uff88\uff921 greater median soil carbon stock compared with the traditional management. The empirical estimates are higher than previous process\uffe2\uff80\uff90model\uffe2\uff80\uff90based estimates and indicate that Ethiopian agriculture has greater potential to sequester carbon in soil than previously estimated.
", "keywords": ["AFRICA", "Carbon Sequestration", "ta1172", "agricultural practices", "GREENHOUSE-GAS MITIGATION", "East-Africa", "soil", "HIGHLANDS", "mitigation", "Soil", "NORTHERN ETHIOPIA", "SYSTEMS", "MANAGEMENT", "STOCKS", "2. Zero hunger", "SOIL ORGANIC-MATTER", "CLIMATE-CHANGE", "LAND-USE", "carbon stock", "Agriculture", "04 agricultural and veterinary sciences", "ta4111", "Models", " Theoretical", "15. Life on land", "Carbon", "Environmental sciences", "climate change", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.1111/gcb.13288"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/gcb.13288", "name": "item", "description": "10.1111/gcb.13288", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/gcb.13288"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-06-01T00:00:00Z"}}, {"id": "10.1111/j.1365-2389.2008.01059.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:28Z", "type": "Journal Article", "created": "2008-08-27", "title": "Influence Of Land Use (Savanna, Pasture,Eucalyptusplantations) On Soil Carbon And Nitrogen Stocks In Brazil", "description": "SummaryIn Brazil, mostEucalyptusstands have been planted on Cerrado (shrubby savanna) or on Cerrado converted into pasture. Case studies are needed to assess the effect of such land use changes on soil fertility and C sequestration. In this study, the influence of Cerrado land development (pasture andEucalyptusplantations) on soil organic carbon (SOC) and nitrogen (SON) stocks were quantified in southern Brazil. Two contrasted silvicultural practices were also compared: 60\uffe2\uff80\uff83years of short\uffe2\uff80\uff90rotation silviculture (EUCSR) versus 60\uffe2\uff80\uff83years of continuous growth (EUCHF). C and N soil concentrations and bulk densities were measured and modelled for each vegetation type, and SOC and SON stocks were calculated down to a depth of 1\uffe2\uff80\uff83m by a continuous function.
Changes in SOC and SON stocks mainly occurred in the forest floor (no litter in pasture and up to 0.87\uffe2\uff80\uff83kg C\uffe2\uff80\uff83m\uffe2\uff88\uff922and 0.01\uffe2\uff80\uff83kg N\uffe2\uff80\uff83m\uffe2\uff88\uff922in EUCSR) and upper soil horizons. C and N stocks and their confidence intervals were greatly influenced by the methodology used to compute these layers. C/N ratio and13C analysis showed that down to a depth of 30\uffe2\uff80\uff83cm, the Cerrado organic matter was replaced by organic matter from newly introduced vegetation by as much as 75\uffe2\uff80\uff93100% for pasture and about 50% for EUCHF, poorer in N forEucalyptusstands (C/N larger than 18 forEucalyptusstands). Under pasture, 0\uffe2\uff80\uff9330\uffe2\uff80\uff83cm SON stocks (0.25\uffe2\uff80\uff83kg N\uffe2\uff80\uff83m\uffe2\uff88\uff922) were between 10 and 20% greater than those of the Cerrado (0.21\uffe2\uff80\uff83kg N\uffe2\uff80\uff83m\uffe2\uff88\uff922), partly due to soil compaction (limit bulk density at soil surface from 1.23 for the Cerrado to 1.34 for pasture). Land development on the Cerrado increased SOC stocks in the 0\uffe2\uff80\uff9330\uffe2\uff80\uff83cm layer by between 15 and 25% (from 2.99 (Cerrado) to 3.86 (EUCSR)\uffe2\uff80\uff83kg C\uffe2\uff80\uff83m\uffe2\uff88\uff922). When including litter layers, total 0\uffe2\uff80\uff9330\uffe2\uff80\uff83cm carbon stocks increased by 35% for EUCHF(4.50\uffe2\uff80\uff83kg C\uffe2\uff80\uff83m\uffe2\uff88\uff922) and 53% for EUCSR(5.08\uffe2\uff80\uff83kg C\uffe2\uff80\uff83m\uffe2\uff88\uff922), compared with the Cerrado (3.28\uffe2\uff80\uff83kg C\uffe2\uff80\uff83m\uffe2\uff88\uff922), independently of soil compaction.
", "keywords": ["P33 - Chimie et physique du sol", "sol", "http://aims.fao.org/aos/agrovoc/c_24420", "http://aims.fao.org/aos/agrovoc/c_7071", "http://aims.fao.org/aos/agrovoc/c_5192", "STOCKS ET FLUX", "stockage", "[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study", "910", "ORGANIC-MATTER DYNAMICS", "utilisation des terres", "p\u00e2turages", "http://aims.fao.org/aos/agrovoc/c_7427", "MANAGEMENT", "http://aims.fao.org/aos/agrovoc/c_5626", "savane", "http://aims.fao.org/aos/agrovoc/c_1301", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study", "http://aims.fao.org/aos/agrovoc/c_35657", "azote", "2. Zero hunger", "Eucalyptus", "340", "CONGO", "04 agricultural and veterinary sciences", "15. Life on land", "FOREST", "sylviculture", "K10 - Production foresti\u00e8re", "TREE PLANTATIONS", "CONVERSION", "http://aims.fao.org/aos/agrovoc/c_1070", "13. Climate action", "http://aims.fao.org/aos/agrovoc/c_4182", "AFFORESTATION", "http://aims.fao.org/aos/agrovoc/c_6825", "0401 agriculture", " forestry", " and fisheries", "EASTERN AUSTRALIA", "P01 - Conservation de la nature et ressources fonci\u00e8res", "carbone", "impact sur l'environnement", "plantations", "http://aims.fao.org/aos/agrovoc/c_7156", "http://aims.fao.org/aos/agrovoc/c_5990", "LEAF-LITTER", "STORAGE", "mati\u00e8re organique du sol", "http://aims.fao.org/aos/agrovoc/c_2683"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2389.2008.01059.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/European%20Journal%20of%20Soil%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1365-2389.2008.01059.x", "name": "item", "description": "10.1111/j.1365-2389.2008.01059.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2389.2008.01059.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-09-15T00:00:00Z"}}, {"id": "10.1111/j.1365-2389.2010.01313.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:28Z", "type": "Journal Article", "created": "2010-11-16", "title": "Earthworm-Induced N Mineralization In Fertilized Grassland Increases Both N2o Emission And Crop-N Uptake", "description": "Earthworms can increase plant nitrogen (N) availability by stimulating mineralization of organic matter. However, recent studies show that they can also cause elevated emission of the greenhouse gas nitrous oxide (N2O). It is unclear to what extent these two effects occur in fertilized grasslands, where earthworm densities are typically greatest. The aims of this study were therefore to (i) quantify the effects of earthworm activity on N uptake and N2O emissions in fertilized grasslands and (ii) link these effects to earthworm functional groups. In a 73\uffe2\uff80\uff90day factorial mesocosm experiment, combinations of Lumbricus rubellus (Lr, epigeic), Aporrectodea longa (Al, anecic) and Aporrectodea caliginosa (Ac, endogeic) individuals were introduced into columns with grass growing on a fertilized (250 kg N ha\uffe2\uff88\uff921) loamy soil. Introduction of Lr resulted in 50.8% (P < 0.001) larger N2O emissions and 5.4% (P = 0.032) larger grass biomass. Grass\uffe2\uff80\uff90N uptake increased from 172 to 188 kg N ha\uffe2\uff88\uff921 in the presence of Lr (P < 0.001), from 176 to 183 kg N ha\uffe2\uff88\uff921 in the presence of Ac (P = 0.001), and from 168 to 199 kg N ha\uffe2\uff88\uff921 when all three earthworm species were present (P = 0.006). Lr increased soil NH4+\uffe2\uff80\uff90N concentrations (P = 0.010), further indicating enhanced mineralization of N caused by earthworm activity. We conclude that the previously observed beneficial effect of earthworm presence on plant\uffe2\uff80\uff90N availability has a negative side\uffe2\uff80\uff90effect: increased emissions of the mineralized N as N2O.
", "keywords": ["forests", "2. Zero hunger", "agroecosystems", "habitat", "04 agricultural and veterinary sciences", "15. Life on land", "carbon-dioxide", "invasion", "populations", "fluxes", "soil-structure", "13. Climate action", "nitrous-oxide emission", "0401 agriculture", " forestry", " and fisheries", "organic-matter"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2389.2010.01313.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/European%20Journal%20of%20Soil%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1365-2389.2010.01313.x", "name": "item", "description": "10.1111/j.1365-2389.2010.01313.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2389.2010.01313.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-11-16T00:00:00Z"}}, {"id": "10.1111/j.1365-2486.2004.00862.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:29Z", "type": "Journal Article", "created": "2004-11-16", "title": "Decomposition Of Soil And Plant Carbon From Pasture Systems After 9 Years Of Exposure To Elevated Co2: Impact On C Cycling And Modeling", "description": "AbstractElevated atmospheric CO2 may alter decomposition rates through changes in plant material quality and through its impact on soil microbial activity. This study examines whether plant material produced under elevated CO2 decomposes differently from plant material produced under ambient CO2. Moreover, a long\uffe2\uff80\uff90term experiment offered a unique opportunity to evaluate assumptions about C cycling under elevated CO2 made in coupled climate\uffe2\uff80\uff93soil organic matter (SOM) models. Trifolium repens and Lolium perenne plant materials, produced under elevated (60\uffe2\uff80\uff83Pa) and ambient CO2 at two levels of N fertilizer (140 vs. 560\uffe2\uff80\uff83kg\uffe2\uff80\uff83ha\uffe2\uff88\uff921\uffe2\uff80\uff83yr\uffe2\uff88\uff921), were incubated in soil for 90 days. Soils and plant materials used for the incubation had been exposed to ambient and elevated CO2 under free air carbon dioxide enrichment conditions and had received the N fertilizer for 9 years. The rate of decomposition of L. perenne and T. repens plant materials was unaffected by elevated atmospheric CO2 and rate of N fertilization. Increases in L. perenne plant material C\uffe2\uff80\uff83:\uffe2\uff80\uff83N ratio under elevated CO2 did not affect decomposition rates of the plant material. If under prolonged elevated CO2 changes in soil microbial dynamics had occurred, they were not reflected in the rate of decomposition of the plant material. Only soil respiration under L. perenne, with or without incorporation of plant material, from the low\uffe2\uff80\uff90N fertilization treatment was enhanced after exposure to elevated CO2. This increase in soil respiration was not reflected in an increase in the microbial biomass of the L. perenne soil. The contribution of old and newly sequestered C to soil respiration, as revealed by the 13C\uffe2\uff80\uff90CO2 signature, reflected the turnover times of SOM\uffe2\uff80\uff93C pools as described by multipool SOM models. The results do not confirm the assumption of a negative feedback induced in the C cycle following an increase in CO2, as used in coupled climate\uffe2\uff80\uff93SOM models. Moreover, this study showed no evidence for a positive feedback in the C cycle following additional N fertilization.
", "keywords": ["2. Zero hunger", "organic-matter dynamics", "atmospheric co2", "leaf-litter", "global climate-change", "fumigation-extraction", "microbial biomass-c", "litter decomposition", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "dioxide", "13. Climate action", "drying-rewetting frequency", "great-plains", "0401 agriculture", " forestry", " and fisheries"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2486.2004.00862.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1365-2486.2004.00862.x", "name": "item", "description": "10.1111/j.1365-2486.2004.00862.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2486.2004.00862.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-10-25T00:00:00Z"}}, {"id": "10.1111/j.1365-2486.2006.01172.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-13T16:19:31Z", "type": "Journal Article", "created": "2006-07-06", "title": "Total Soil C And N Sequestration In A Grassland Following 10 Years Of Free Air Co2 Enrichment", "description": "AbstractSoil C sequestration may mitigate rising levels of atmospheric CO2. However, it has yet to be determined whether net soil C sequestration occurs in N\uffe2\uff80\uff90rich grasslands exposed to long\uffe2\uff80\uff90term elevated CO2. This study examined whether N\uffe2\uff80\uff90fertilized grasslands exposed to elevated CO2 sequestered additional C. For 10 years, Lolium perenne, Trifolium repens, and the mixture of L. perenne/T. repens grasslands were exposed to ambient and elevated CO2 concentrations (35 and 60\uffe2\uff80\uff83Pa pCO2). The applied CO2 was depleted in \uffce\uffb413C and the grasslands received low (140\uffe2\uff80\uff83kg\uffe2\uff80\uff83ha\uffe2\uff88\uff921) and high (560\uffe2\uff80\uff83kg\uffe2\uff80\uff83ha\uffe2\uff88\uff921) rates of 15N\uffe2\uff80\uff90labeled fertilizer. Annually collected soil samples from the top 10\uffe2\uff80\uff83cm of the grassland soils allowed us to follow the sequestration of new C in the surface soil layer. For the first time, we were able to collect dual\uffe2\uff80\uff90labeled soil samples to a depth of 75\uffe2\uff80\uff83cm after 10 years of elevated CO2 and determine the total amount of new soil C and N sequestered in the whole soil profile. Elevated CO2, N\uffe2\uff80\uff90fertilization rate, and species had no significant effect on total soil C. On average 9.4\uffe2\uff80\uff83Mg new C\uffe2\uff80\uff83ha\uffe2\uff88\uff921 was sequestered, which corresponds to 26.5% of the total C. The mean residence time of the C present in the 0\uffe2\uff80\uff9310\uffe2\uff80\uff83cm soil depth was calculated at 4.6\uffc2\uffb11.5 and 3.1\uffc2\uffb11.1 years for L. perenne and T. repens soil, respectively. After 10 years, total soil N and C in the 0\uffe2\uff80\uff9375\uffe2\uff80\uff83cm soil depth was unaffected by CO2 concentration, N\uffe2\uff80\uff90fertilization rate and plant species. The total amount of 15N\uffe2\uff80\uff90fertilizer sequestered in the 0\uffe2\uff80\uff9375\uffe2\uff80\uff83cm soil depth was also unaffected by CO2 concentration, but significantly more 15N was sequestered in the L. perenne compared with the T. repens swards: 620 vs. 452\uffe2\uff80\uff83kg\uffe2\uff80\uff83ha\uffe2\uff88\uff921 at the high rate and 234 vs. 133\uffe2\uff80\uff83kg\uffe2\uff80\uff83ha\uffe2\uff88\uff921 at the low rate of N fertilization. Intermediate values of 15N recovery were found in the mixture. The fertilizer derived N amounted to 2.8% of total N for the low rate and increased to 8.6% for the high rate of N application. On average, 13.9% of the applied 15N\uffe2\uff80\uff90fertilizer was recovered in the 0\uffe2\uff80\uff9375\uffe2\uff80\uff83cm soil depth in soil organic matter in the L. perenne sward, whereas 8.8% was recovered under the T. repens swards, indicating that the N2\uffe2\uff80\uff90fixing T. repens system was less effective in sequestering applied N than the non\uffe2\uff80\uff90N2\uffe2\uff80\uff90fixing L. perenne system. Prolonged elevated CO2 did not lead to an increase in whole soil profile C and N in these fertilized pastures. The potential use of fertilized and regular cut pastures as a net soil C sink under long\uffe2\uff80\uff90term elevated CO2 appears to be limited and will likely not significantly contribute to the mitigation of anthropogenic C emissions.
", "keywords": ["2. Zero hunger", "plant", "04 agricultural and veterinary sciences", "15. Life on land", "nitrogen pools", "carbon-dioxide", "forest soils", "trifolium-repens l", "lolium-perenne", "litter quality", "0401 agriculture", " forestry", " and fisheries", "n-15-labeled fertilizer", "organic-matter", "elevated atmospheric co2"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2486.2006.01172.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Global%20Change%20Biology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1365-2486.2006.01172.x", "name": "item", "description": "10.1111/j.1365-2486.2006.01172.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2486.2006.01172.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-07-04T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=organic-matter&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=organic-matter&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=organic-matter&", "hreflang": "en-US"}, {"rel": "next", "type": "application/geo+json", "title": "items (next)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=organic-matter&offset=50", "hreflang": "en-US"}], "numberMatched": 90, "numberReturned": 50, "distributedFeatures": [], "timeStamp": "2026-04-16T08:36:29.115144Z"}