{"type": "FeatureCollection", "facets": {"type": {"type": "terms", "property": "type", "buckets": [{"value": "Journal Article", "count": 172}, {"value": "Dataset", "count": 14}, {"value": "Report", "count": 2}, {"value": "Other", "count": 1}, {"value": null, "count": 1}]}, "soil_chemical_properties": {"type": "terms", "property": "soil_chemical_properties", "buckets": [{"value": "nitrous oxide", "count": 190}, {"value": "methane", "count": 63}, {"value": "ammonia", "count": 13}, {"value": "carbon", "count": 13}, {"value": "urea", "count": 7}, {"value": "soil organic carbon", "count": 6}, {"value": "nitrate", "count": 6}, {"value": "iron", "count": 1}, {"value": "soil organic matter", "count": 1}, {"value": "mineral fertilisers", "count": 1}]}, "soil_biological_properties": {"type": "terms", "property": "soil_biological_properties", "buckets": [{"value": "respiration", "count": 5}, {"value": "plants", "count": 5}, {"value": "environmental compartments", "count": 3}, {"value": "nutrient turnover", "count": 2}]}, "soil_physical_properties": {"type": "terms", "property": "soil_physical_properties", "buckets": [{"value": "water", "count": 14}]}, "soil_classification": {"type": "terms", "property": "soil_classification", "buckets": [{"value": "agricultural soils", "count": 5}, {"value": "forest soils", "count": 2}, {"value": "entisols", "count": 1}]}, "soil_functions": {"type": "terms", "property": "soil_functions", "buckets": [{"value": "soil fertility", "count": 4}, {"value": "food security", "count": 3}, {"value": "plant nutrients", "count": 2}, {"value": "crop yields", "count": 1}, {"value": "land cover change", "count": 1}]}, "soil_threats": {"type": "terms", "property": "soil_threats", "buckets": [{"value": "soil erosion", "count": 3}, {"value": "acidic precipitation", "count": 1}, {"value": "acidification", "count": 1}, {"value": "nutrient depletion", "count": 1}, {"value": "soil compaction", "count": 1}]}, "soil_processes": {"type": "terms", "property": "soil_processes", "buckets": [{"value": "greenhouse gas emissions", "count": 7}]}, "soil_management": {"type": "terms", "property": "soil_management", "buckets": [{"value": "compost", "count": 2}, {"value": "cultivation", "count": 2}, {"value": "plant residues", "count": 1}]}, "ecosystem_services": {"type": "terms", "property": "ecosystem_services", "buckets": []}}, "features": [{"id": "10.1007/s00244-013-9903-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:25Z", "type": "Journal Article", "created": "2013-04-22", "title": "Nitrous Oxide Emissions From Yellow Brown Soil As Affected By Incorporation Of Crop Residues With Different Carbon-To-Nitrogen Ratios: A Case Study In Central China", "description": "To investigate the influence of crop residues decomposition on nitrous oxide (N2O) emission, a field study was performed with application of crop residues with different C:N ratios in a bare yellow brown soil at the experimental station of Zhangjiachong at Zigui, China. We set up six experimental treatments: no crop residue (CK), rapeseed cake (RC), potato stalk (PS), rice straw (RS), wheat straw (WS), and corn straw (CS). The carbon (C) to nitrogen (N) ratios of these crop residues were 7.5, 32.9, 40.4, 65.7, and 90.9, respectively. Nitrous oxide fluxes were measured using a static closed chamber method. N2O emissions were significantly enhanced by incorporation of crop residues. Cumulative N2O emissions negatively correlated with C:N ratio (R (2) = 0.9821) of the crop residue, but they were positively correlated with average concentrations of dissolved organic carbon and microbial biomass carbon. Nitrogen emission fraction, calculated as N2O-N emissions originated from the crop residues N, positively correlated with C:N ratio of the residues (P < 0.05). Soil temperature did, whereas soil moisture did not, control the residue's induced N2O emissions because a significant correlation (P < 0.01) existed between soil temperature and N2O emissions in all treatments except the control. In contrast, a significant relationship between soil moisture and N2O emissions was found in the control only. Furthermore, N2O emission significantly correlated (P < 0.05) with NO3 (-)-N, and NH4 (+)-N contents from all residue treatments. These results indicate that (1) crop residues with distinct carbon and nitrogen contents can significantly alter soil N2O flux rates; and (2) soil biotic as well as abiotic variables are critical in determining soil-atmospheric N2O emissions after crop residue incorporation into soil.", "keywords": ["Crops", " Agricultural", "2. Zero hunger", "China", "Time Factors", "Nitrogen", "Nitrous Oxide", "04 agricultural and veterinary sciences", "15. Life on land", "Carbon", "Soil", "13. Climate action", "Animals", "0401 agriculture", " forestry", " and fisheries", "Seasons", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1007/s00244-013-9903-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Archives%20of%20Environmental%20Contamination%20and%20Toxicology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00244-013-9903-7", "name": "item", "description": "10.1007/s00244-013-9903-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00244-013-9903-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-04-23T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2022.157225", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:32Z", "type": "Journal Article", "created": "2022-07-07", "title": "Perennial alley cropping contributes to decrease soil CO2 and N2O emissions and increase soil carbon sequestration in a Mediterranean almond orchard", "description": "The implementation of alley cropping in orchards can be a sustainable strategy to increase farm productivity by crop
diversification and contribute to climate change mitigation. In this research, we evaluated the short-termeffect of alley
cropping with reduced tillage on soil CO2 and N2O emissions and soil total organic carbon (TOC) in an almond orchard
under Mediterranean rainfed conditions. We compared an almond monoculture with tillage in all plot surface (MC)
with almond crop with reduced tillage and growth of Capparis spinosa (D1) and almond crop with reduced tillage and
growth of Thymus hyemalis (D2). For two years, soil CO2 and N2O were measured, with soil sampling at the start and
end of the experimental period. Results showed that CO2 emission rates followed the soil temperature pattern, while
N2O emissions were not correlated with temperature nor moisture. Soil CO2 emissions were significantly higher in
MC(87mgm\u22122 h\u22121), with no significant differences between D1 and D2 (69mgm\u22122 h\u22121). Some peaks in CO2 effluxes
were observed after tillage operations during warm days. Soil N2Oemission rateswere not significantly different among
treatments. Cumulative CO2 and CO2 equivalent (CO2e) emissions were significantly highest in MC. When CO2e emissions
were expressed on a crop production basis, D2 showed the significantly lowest values (5080 g kg\u22121) compared to
D1 (50,419 g kg\u22121) and MC (87,836 g kg\u22121), owing to the high thyme yield, additional to the almond yield. No production
was obtained for C. spinosa, since at least two more years are required. TOC did not change with time in MCneither
D1, but it significantly increased inD2 from3.85 g kg\u22121 in 2019 to 4.62 g kg\u22121 in 2021. Thus, alley cropping can contribute
to increase the agroecosystem productivity and reduce CO2 emissions. However, it is necessary to grow", "keywords": ["2. Zero hunger", "Carbon Sequestration", "N2O emissions", "Nitrous Oxide", "Agriculture", "Thyme", "2511.08 Mec\u00e1nica de Suelos (Agricultura)", "Carbon Dioxide", "15. Life on land", "CO2 emissions", "Prunus dulcis", "12. Responsible consumption", "Edafolog\u00eda y Qu\u00edmica Agr\u00edcola", "Soil", "Intercropping", "13. Climate action", "5102.01 Agricultura", "Soil carbon sequestration", "Caper", "Fertilizers"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2022.157225"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2022.157225", "name": "item", "description": "10.1016/j.scitotenv.2022.157225", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2022.157225"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-11-01T00:00:00Z"}}, {"id": "10.1016/j.jconhyd.2021.103797", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:12Z", "type": "Journal Article", "created": "2021-03-18", "title": "Dynamics of nitrous oxide with depth in groundwater: Insights from ambient groundwater and laboratory incubation experiments (Hesbaye chalk aquifer, Belgium)", "description": "Aquifers under agricultural areas are considered to be an indirect source of nitrous oxide emission (N2O) to the atmosphere, which is the greenhouse gas (GHGs) characterized with the highest global warning potential and acts as a stratospheric ozone depletion agent. Previous investigations performed in the Cretaceous Hesbaye chalk aquifer in Eastern Belgium suggested that the dynamics of N2O in the aquifer is controlled by overlapping biochemical processes such as nitrification and denitrification. The current study aims to obtain better insight concerning the factors controlling the distribution of N2O concentration along a vertical dimension in the aquifer, and to capture and quantify the occurrence of nitrification and denitrification processes in the groundwater system. Low-flow groundwater sampling technique was undertaken at different depths in the aquifer to collect groundwater samples aiming at obtaining information about ambient aquifer hydrogeochemical conditions and their effect on the accumulation of GHGs. Afterwards, laboratory stable isotope experiments, using NO3- and NH4+ compounds labeled with heavy 15N isotope, were applied to quantify the rates of nitrification and denitrification processes. Ambient studies suggest that the occurrence of N transformation was related to denitrification while laboratory incubation experiments did not detect it. Such controversial results might be explained by the discrepancy between real aquifer conditions and lab design studies. Thus, additional in situ tracer experiments should be carried out in areas where natural groundwater fluxes do not flush the injected tracer too rapidly. In addition, it would be useful to conduct microbiological studies to obtain better insight into the nature of subsurface biofilm biotope.", "keywords": ["2. Zero hunger", "Nitrous Oxide", "N stable isotope analysis", "Nitrification", "01 natural sciences", "Low-flow sampling", "6. Clean water", "Calcium Carbonate", "Greenhouse gases", "Belgium", "13. Climate action", "Denitrification", "Laboratories", "Groundwater", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.jconhyd.2021.103797"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Contaminant%20Hydrology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jconhyd.2021.103797", "name": "item", "description": "10.1016/j.jconhyd.2021.103797", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jconhyd.2021.103797"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-08-01T00:00:00Z"}}, {"id": "10.1007/978-94-007-0394-0_20", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:15Z", "created": "2011-02-08", "title": "Biofuels, Greenhouse Gases And Climate Change", "description": "Biofuels are fuels produced from biomass, mostly in liquid form, within a time frame sufficiently short to consider that their feedstock (biomass) can be renewed, contrarily to fossil fuels. This paper reviews the current and future biofuel technologies, and their development impacts (including on the climate) within given policy and economic frameworks. Current technologies make it possible to provide first generation biodiesel, ethanol or biogas to the transport sector to be blended with fossil fuels. Still under-development 2nd generation biofuels from lignocellulose should be available on the market by 2020. Research is active on the improvement of their conversion efficiency. A ten-fold increase compared with current cost-effective capacities would make them highly competitive. Within bioenergy policies, emphasis has been put on biofuels for transportation as this sector is fast-growing and represents a major source of anthropogenic greenhouse gas emissions. Compared with fossil fuels, biofuel combustion can emit less greenhouse gases throughout their life cycle, considering that part of the emitted returns to the atmosphere where it was fixed from by photosynthesis in the first place. Life cycle assessment (LCA) is commonly used to assess the potential environmental impacts of biofuel chains, notably the impact on global warming. This tool, whose holistic nature is fundamental to avoid pollution trade-offs, is a standardised methodology that should make comparisons between biofuel and fossil fuel chains objective and thorough. However, it is a complex and time-consuming process, which requires lots of data, and whose methodology is still lacking harmonisation. Hence the life-cycle performances of biofuel chains vary widely in the literature. Furthermore, LCA is a site- and time- independent tool that cannot take into account the spatial and temporal dimensions of emissions, and can hardly serve as a decision-making tool either at local or regional levels. Focusing on greenhouse gases, emission factors used in LCAs give a rough estimate of the potential average emissions on a national level. However, they do not take into account the types of crop, soil or management practices, for instance. Modelling the impact of local factors on the determinism of greenhouse gas emissions can provide better estimates for LCA on the local level, which would be the relevant scale and degree of reliability for decision-making purposes. Nevertheless, a deeper understanding of the processes involved, most notably emissions, is still needed to definitely improve the accuracy of LCA. Perennial crops are a promising option for biofuels, due to their rapid and efficient use of nitrogen, and their limited farming operations. However, the main overall limiting factor to biofuel development will ultimately be land availability. Given the available land areas, population growth rate and consumption behaviours, it would be possible to reach by 2030 a global 10% biofuel share in the transport sector, contributing to lower global greenhouse gas emissions by up to (IEA, 2006), provided that harmonised policies ensure that sustainability criteria for the production systems are respected worldwide. Furthermore, policies should also be more integrative across sectors, so that changes in energy efficiency, the automotive sector and global consumption patterns converge towards drastic reduction of the pressure on resources. Indeed, neither biofuels nor other energy source or carriers are likely to mitigate the impacts of anthropogenic pressure on resources in a range that would compensate for this pressure growth. Hence, the first step is to reduce this pressure by starting from the variable that drives it up, i.e. anthropic consumptions.", "keywords": ["effet de serre", "BIOFUELS;ENERGY CROPS;PERENNIALS;LCA;GREENHOUSE GASES;CLIMATE CHANGE;POLITICAL AND ECONOMIC FRAMEWORKS;BIOENERGY POTENTIAL;LAND-USE CHANGE;NITROUS OXIDE;CARBON DIOXIDE;AGRICULTURAL PRATICES \u00a0;AGRONOMIE;", "0211 other engineering and technologies", "02 engineering and technology", "7. Clean energy", "12. Responsible consumption", "dioxyde de carbone", "11. Sustainability", "0202 electrical engineering", " electronic engineering", " information engineering", "biomasse", "pratique culturale", "\u00e9nergie", "2. Zero hunger", "changement climatique", "oxyde nitreux", "gaz trace", "\u00e9mission", "Agricultural sciences", "flux", "culture \u00e9nerg\u00e9tique", "cycle de vie", "biocarburant", "13. Climate action", "politique \u00e9nerg\u00e9tique", "impact sur l'environnement", "Sciences agricoles"]}, "links": [{"href": "https://doi.org/10.1007/978-94-007-0394-0_20"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/978-94-007-0394-0_20", "name": "item", "description": "10.1007/978-94-007-0394-0_20", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/978-94-007-0394-0_20"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-01-01T00:00:00Z"}}, {"id": "10.1002/rcm.6254", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:11Z", "type": "Journal Article", "created": "2012-09-15", "title": "Soil Mineral N Retention And N2o Emissions Following Combined Application Of 15n-Labelled Fertiliser And Weed Residues", "description": "RATIONALE

The combination of plant residues with inorganic fertiliser\uffe2\uff80\uff90N provides the potential to increase N\uffe2\uff80\uff90use efficiency in agricultural fruit production systems, such as olive orchards. The development of weeds in the inter\uffe2\uff80\uff90canopy area of olive orchards is encouraged as a novel strategy to reduce soil erosion. However, little is known about soil N retention or N2O production following the combined application of inorganic\uffe2\uff80\uff90N with the mulched weed residues.

METHODS

Emissions of 15N\uffe2\uff80\uff90N2O and soil mineral 15N retention were measured following combined applications of 15N\uffe2\uff80\uff90labelled fertiliser and a range of olive crop weed residues to a silty loam soil under controlled conditions. These plant residues differed in their C:N ratios, lignin and polyphenol contents.

RESULTS

The magnitude of soil 15N\uffe2\uff80\uff90NO3\uffe2\uff80\uff93 retention from combining plant residues and fertiliser\uffe2\uff80\uff90N was highly dependent on potential N mineralisation (r\uffe2\uff80\uff89=\uffe2\uff80\uff89\uffe2\uff88\uff920.96) and the (lignin\uffe2\uff80\uff89+\uffe2\uff80\uff89polyphenol)\uffe2\uff80\uff90to\uffe2\uff80\uff90N ratio (r\uffe2\uff80\uff89=\uffe2\uff80\uff890.98) of the residues. Fertiliser\uffe2\uff80\uff90N\uffe2\uff80\uff90derived retention was zero for a legume\uffe2\uff80\uff90based mulch but up to 80% in the treatment containing plant residues with a high (lignin\uffe2\uff80\uff89+\uffe2\uff80\uff89polyphenol)\uffe2\uff80\uff90to\uffe2\uff80\uff90N ratio. N2O emissions increased after the addition of residues, and increased further (up to 128%) following the combined application of inorganic fertiliser and residues. Fertiliser\uffe2\uff80\uff90derived 15N\uffe2\uff80\uff90N2O was <1.4% of the total 14+15N\uffe2\uff80\uff90N2O emission and <0.01% of the applied 15N\uffe2\uff80\uff90NO3\uffe2\uff80\uff93. Enhanced N2O emissions following the application of residues and the fertiliser\uffe2\uff80\uff90N values were positively correlated with the C:N ratio of the residue. Thus, combining organic\uffe2\uff80\uff90 and inorganic\uffe2\uff80\uff90N immobilised a significant proportion of the inorganic N with little increase in N2O, especially in low C:N ratio residues.

CONCLUSIONS

The results demonstrate that whilst there is potential for N2O emissions to be controlled by combining weed residues and inorganic fertilisers, this is not easy to achieve as the magnitude and direction of interactions vary between different species due to their varying substrate qualities. Copyright \uffc2\uffa9 2012 John Wiley & Sons, Ltd.

", "keywords": ["2. Zero hunger", "Nitrogen", "Chemistry", " Analytical", "Nitrous Oxide", "04 agricultural and veterinary sciences", "15. Life on land", "Plants", "01 natural sciences", "6. Clean water", "Biochemical Research Methods", "0104 chemical sciences", "Soil", "13. Climate action", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Fertilizers", "Spectroscopy", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1002/rcm.6254"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Rapid%20Communications%20in%20Mass%20Spectrometry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/rcm.6254", "name": "item", "description": "10.1002/rcm.6254", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/rcm.6254"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-09-10T00:00:00Z"}}, {"id": "10.1002/rcm.8478", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:11Z", "type": "Journal Article", "created": "2019-05-07", "title": "Determination of the triple oxygen and carbon isotopic composition of CO 2 from atomic ion fragments formed in the ion source of the 253 Ultra high\u2010resolution isotope ratio mass spectrometer", "description": "Rationale

Determination of \uffce\uffb417O values directly from CO2 with traditional gas source isotope ratio mass spectrometry is not possible due to isobaric interference of 13C16O16O on 12C17O16O. The methods developed so far use either chemical conversion or isotope equilibration to determine the \uffce\uffb417O value of CO2. In addition, \uffce\uffb413C measurements require correction for the interference from 12C17O16O on 13C16O16O since it is not possible to resolve the two isotopologues.

Methods

We present a technique to determine the \uffce\uffb417O, \uffce\uffb418O and \uffce\uffb413C values of CO2 from the fragment ions that are formed upon electron ionization in the ion source of the Thermo Scientific 253 Ultra high\uffe2\uff80\uff90resolution isotope ratio mass spectrometer (hereafter 253 Ultra). The new technique is compared with the CO2\uffe2\uff80\uff90O2 exchange method and the 17O\uffe2\uff80\uff90correction algorithm for \uffce\uffb417O and \uffce\uffb413C values, respectively.

Results

The scale contractions for \uffce\uffb413C and \uffce\uffb418O values are slightly larger for fragment ion measurements than for molecular ion measurements. The \uffce\uffb417O and \uffce\uff9417O values of CO2 can be measured on the 17O+ fragment with an internal error that is a factor 1\uffe2\uff80\uff932 above the counting statistics limit. The ultimate precision depends on the signal intensity and on the total time that the 17O+ beam is monitored; a precision of 14\uffe2\uff80\uff89ppm (parts per million) (standard error of the mean) was achieved in 20\uffe2\uff80\uff89hours at the University of G\uffc3\uffb6ttingen. The \uffce\uff9417O measurements with the O\uffe2\uff80\uff90fragment method agree with the CO2\uffe2\uff80\uff90O2 exchange method over a range of \uffce\uff9417O values of \uffe2\uff88\uff920.3 to +0.7\uffe2\uff80\uffb0.

Conclusions

Isotope measurements on atom fragment ions of CO2 can be used as an alternative method to determine the carbon and oxygen isotopic composition of CO2 without chemical processing or corrections for mass interferences.

", "keywords": ["550", "NITROUS-OXIDE", "O-17/O-16", "ANALYTICAL SYSTEM", "01 natural sciences", "O-2", "0104 chemical sciences", "O-17 CORRECTION", "HIGH-PRECISION MEASUREMENTS", "13. Climate action", "Life Science", "ABUNDANCE", "DELTA-O-17", "EXCHANGE", "DIOXIDE", "Research Articles", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1002/rcm.8478"}, {"href": "https://doi.org/10.1002/rcm.8478"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Rapid%20Communications%20in%20Mass%20Spectrometry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/rcm.8478", "name": "item", "description": "10.1002/rcm.8478", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/rcm.8478"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-08-05T00:00:00Z"}}, {"id": "10.1007%2fs00374-010-0497-1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:13Z", "type": "Journal Article", "created": "2010-09-03", "title": "Crop Residues And Fertilizer Nitrogen Influence Residue Decomposition And Nitrous Oxide Emission From A Vertisol", "description": "Crop residues with high C/N ratio immobilize N released during decomposition in soil, thus reducing N losses through leaching, denitrification, and nitrous oxide (N2O) emission. A laboratory incubation experiment was conducted for 84\u00a0days under controlled conditions (24\u00b0C and moisture content 55% of water-holding capacity) to study the influence of sugarcane, maize, sorghum, cotton and lucerne residues, and mineral N addition, on N mineralization\u2013immobilization and N2O emission. Residues were added at the rate of 3\u00a0t C ha\u22121 to soil with, and without, 150\u00a0kg urea N\u00a0ha\u22121. The addition of sugarcane, maize, and sorghum residues without N fertilizer resulted in a significant immobilization of soil N. Amended soil had significantly (P\u2009<\u20090.05) lower NO 3 \u2212 \u2013N, which reached minimum values of 2.8\u00a0mg\u00a0N kg\u22121 for sugarcane (at day\u00a028), 10.3\u00a0mg\u00a0N kg\u22121 for maize (day\u00a07), and 5.9\u00a0mg\u00a0N kg\u22121 for sorghum (day\u00a07), compared to 22.7\u00a0mg\u00a0N kg\u22121 for the unamended soil (day\u00a07). During 84\u00a0days of incubation, the total mineral N in the residues\u2009+\u2009N treatments were decreased by 45\u00a0mg\u00a0N kg\u22121 in sugarcane, 34\u00a0mg\u00a0kg\u22121 in maize, 29\u00a0mg\u00a0kg\u22121 in sorghum, and 16\u00a0mg\u00a0kg\u22121 in cotton amended soil compared to soil\u2009+\u2009N fertilizer, although soil NO 3 \u2212 \u2013N increased by 7\u00a0mg\u00a0kg\u22121 in lucerne amended soil. The addition of residues also significantly increased amended soil microbial biomass C and N. Maximum emissions of N2O from crop residue amended soils occurred in the first 4\u20135\u00a0days of incubation. Overall, after 84\u00a0days of incubation, the cumulative N2O emission was 25% lower with cotton\u2009+\u2009N fertilizer, compared to soil\u2009+\u2009N fertilizer. The cumulative N2O emission was significantly and positively correlated with NO 3 \u2212 \u2013N (r\u2009=\u20090.92, P\u2009<\u20090.01) and total mineral N (r\u2009=\u20090.93, P\u2009<\u20090.01) after 84\u00a0days of incubation, and had a weak but significant positive correlation with cumulative CO2 in the first 3 and 5\u00a0days of incubation (r\u2009=\u20090.59, P\u2009<\u20090.05).", "keywords": ["2. Zero hunger", "Crop residues", "Nitrous oxide", "571", "2404 Microbiology", "Vertisol", "04 agricultural and veterinary sciences", "15. Life on land", "630", "6. Clean water", "Mineral N", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "1102 Agronomy and Crop Science", "1111 Soil Science", "Fertilizer N"], "contacts": [{"organization": "Muhammad, W, Vaughan, SM, Dalal, RC, Menzies, NW,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007%2fs00374-010-0497-1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biology%20and%20Fertility%20of%20Soils", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007%2fs00374-010-0497-1", "name": "item", "description": "10.1007%2fs00374-010-0497-1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007%2fs00374-010-0497-1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2010-09-04T00:00:00Z"}}, {"id": "10.1007/s00244-008-9159-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:25Z", "type": "Journal Article", "created": "2008-04-21", "title": "Nitrous Oxide Emissions From Wetland Rice-Duck Cultivation Systems In Southern China", "description": "Nitrous oxide (N2O) emissions from a rice-duck cultivation system in the subtropical region of China and its regulating factors were investigated by using a static chambers technique during rice growth seasons in 2006 and 2007. The experimental field was equally divided into six plots for two different treatments: One was a conventional rice field (CK) and the other was a rice-duck ecosystem (RD). With the same amount of urea applied as basal fertilization, N2O emission fluxes from RD and CK followed a similar seasonal variation trend. During the flooding seasons, the N2O emission flux was not correlated with temperature, but it was significantly related to soil inorganic nitrogen (SIN) (p < 0.01) and soil pH (p < 0.01). After drainage, the N2O emission flux was not correlated with temperature, SIN, and soil pH. Our experimental data showed that peaks of N2O emission flux occurred both in 2 weeks after urea application and after drainage. Compared to CK, RD could significantly increase N2O emission. We evaluated the integrated global warming potentials (GWPs) of a rice-duck cultivation system based on methane (CH4) and N2O emission, which showed that RD could suppress the total amount of CH4 and N2O emissions from rice paddies. Moreover, because the decrease of CH4 emissions from RD compared to CK was far more than the increase of N2O emissions from RD compared to CK, RD greatly reduced integrated GWPs (CH4 + N2O) compared to CK. So, the rice-duck cultivation system is an effective strategy for reducing integrated GWPs of the rice-duck cultivation systems based on CH4 and N2O in southern China and will contribute to alleviating global warming.", "keywords": ["Crops", " Agricultural", "Greenhouse Effect", "Air Pollutants", "China", "Nitrous Oxide", "Oryza", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "12. Responsible consumption", "Ducks", "13. Climate action", "Wetlands", "Animals", "0401 agriculture", " forestry", " and fisheries", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1007/s00244-008-9159-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Archives%20of%20Environmental%20Contamination%20and%20Toxicology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00244-008-9159-9", "name": "item", "description": "10.1007/s00244-008-9159-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00244-008-9159-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-04-22T00:00:00Z"}}, {"id": "10.1007/s00248-005-5156-y", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:25Z", "type": "Journal Article", "created": "2006-01-02", "title": "Microbial Responses To Long-Term N Deposition In A Semiarid Grassland", "description": "Nitrogen (N) enrichment of the biosphere is an expanding problem to which arid ecosystems may be particularly sensitive. In semiarid grasslands, scarce precipitation uncouples plant and microbial activities, and creates within the soil a spatial mosaic of rhizosphere and cyanobacterial crust communities. We investigated the impact of elevated N deposition on these soil microbial communities at a grama-dominated study site located incentral New Mexico (USA). The study plots were established in 1995 and receive 10 kg ha(-1) year(-1) of supplemental N in the form of NH(4)NO(3). Soil samples were collected in July 2004, following 2 years of severe drought, and again in March 2005 following a winter of record high precipitation. Soils were assayed for potential activities of 20 extracellular enzymes and N(2)O production. The rhizosphere and crust-associated soils had peptidase and peroxidase potentials that were extreme in relation to those of temperate soils. N addition enhanced glycosidase and phosphatase activities and depressed peptidase. In contrast to temperate forest soils, oxidative enzyme activity did not respond to N treatment. Across sampling dates, extracellular enzyme activity responses correlated with inorganic N concentrations. N(2)O generation did not vary significantly with soil cover or N treatment. Microbial responses to N deposition in this semiarid grassland were distinct from those of forest ecosystems and appear to be modulated by inorganic N accumulation, which is linked to precipitation patterns.", "keywords": ["2. Zero hunger", "Principal Component Analysis", "Ecology", "Nitrogen", "Climate", "beta-Glucosidase", "Nitrous Oxide", "04 agricultural and veterinary sciences", "15. Life on land", "Poaceae", "01 natural sciences", "Carbon", "6. Clean water", "Enzymes", "Trees", "Leucyl Aminopeptidase", "Soil", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Soil Microbiology", "Peroxidase", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1007/s00248-005-5156-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microbial%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00248-005-5156-y", "name": "item", "description": "10.1007/s00248-005-5156-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00248-005-5156-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-01-01T00:00:00Z"}}, {"id": "10.1007/s00374-005-0019-8", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:29Z", "type": "Journal Article", "created": "2005-07-11", "title": "Effect Of Improved Fallow On Crop Productivity, Soil Fertility And Climate-Forcing Gas Emissions In Semi-Arid Conditions", "description": "The impacts of fallow on soil fertility, crop production and climate-forcing gas emissions were determined in two contrasting legumes, Gliricidia sepium and Acacia colei, in comparison with traditional unamended fallow and continuous cultivation systems. After 2 years, the amount of foliar material produced did not differ between the two improved fallow species; however, grain yield was significantly elevated by 55% in the first and second cropping season after G. sepium compared with traditional fallow. By contrast, relative to the unamended fallow, a drop in grain yield was observed in the first cropping season after A. colei, followed by no improvement in the second. G. sepium had higher foliar N, K and Mg, while A. colei had lower foliar N but higher lignin and polyphenols. In the third year after fallow improvement, a simulated rainfall experiment was performed on soils to compare efflux of N2O and CO2. Improved fallow effects on soil nutrient composition and microbial activity were demonstrated through elevated N2O and CO2 efflux from soils in G. sepium fallows compared with other treatments. N2O emissions were around six times higher from this nitrogen-fixing soil treatment, evolving 69.9 ngN2O\u2013N g\u22121soil h\u22121 after a simulated rainfall event, compared with only 8.5 and 4.8 ngN2O\u2013N g\u22121soil h\u22121 from soil under traditional fallow and continuous cultivation, respectively. The findings indicate that selection of improved fallows for short-term fertility enhancement has implications for regional N2O emissions for dry land regions.", "keywords": ["2. Zero hunger", "Technology", "Nitrous oxide", "Economics", "Soil Science", "Production", "Agriculture-Farming", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "630", "Foliar composition", "6. Clean water", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Improved fallow", "Crop yield", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1007/s00374-005-0019-8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biology%20and%20Fertility%20of%20Soils", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00374-005-0019-8", "name": "item", "description": "10.1007/s00374-005-0019-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00374-005-0019-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-07-12T00:00:00Z"}}, {"id": "10.1007/s00374-014-0952-5", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:32Z", "type": "Journal Article", "created": "2014-08-29", "title": "Nitrous Oxide And Methane Emissions From A Vetch Cropping Season Are Changed By Long-Term Tillage Practices In A Mediterranean Agroecosystem", "description": "Lower greenhouse gas (GHG) emissions from legume-based cropping systems have encouraged their use to deliver mitigation in agricultural systems. Considerable uncertainties remain about the interaction of legumes with long-term tillage systems on GHG emissions under rainfed agroecosystems. In this context, a field experiment was undertaken under a rainfed vetch crop to evaluate the effect of three long-term tillage systems (i.e. no tillage (NT), minimum tillage (MT) and conventional tillage (CT)) on nitrous oxide (N2O) and methane (CH4) emissions for 1 year. Different N2O flux patterns were observed among tillage systems during the growth period of vetch, which depended on the soil conditions favouring nitrification and denitrification. The NT system maintained a higher sink for N2O than MT and CT from January to mid-April, which significantly reduced N2O emissions at this stage. In this period, denitrification capacity and nirK gene numbers were higher for MT than NT and CT. Additionally, an increase in soil NO\u2212 3 content and more favourable denitrification conditions in MT and NT than in CT for the last crop period increased N2O emissions in conservation tillage systems. Total annual N2O losses were significantly higher in MT (124.2 g N2O\u2013N ha\u22121) than NT (51.1 g N2O\u2013N ha\u22121) and CT (54 g N2O\u2013N ha\u22121) in a vetch crop. Low net uptake of CH4 was observed for all tillage systems. These results suggested that long-term NT may be a better option thanMT to mitigate GHG emissions in rainfed legume-cereal rotation. \u00a9 Springer-Verlag Berlin Heidelberg 2014.", "keywords": ["2. Zero hunger", "Nitrous oxide", "Soil organic carbon", "13. Climate action", "11. Sustainability", "0401 agriculture", " forestry", " and fisheries", "NirK", "04 agricultural and veterinary sciences", "15. Life on land", "Long-term tillage", "Methane", "Vetch crop"]}, "links": [{"href": "https://doi.org/10.1007/s00374-014-0952-5"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biology%20and%20Fertility%20of%20Soils", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00374-014-0952-5", "name": "item", "description": "10.1007/s00374-014-0952-5", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00374-014-0952-5"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-08-30T00:00:00Z"}}, {"id": "10.1016/j.agee.2006.11.020", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:38Z", "type": "Journal Article", "created": "2007-01-18", "title": "Nitrogen Oxide Emissions From An Irrigated Maize Crop Amended With Treated Pig Slurries And Composts In A Mediterranean Climate", "description": "Open AccessOrganic fertilizers may differ greatly in composition and as a result there may also be differences in nitrogen oxides emissions following their application to soils. The aim of this study was to evaluate the influence of mineral and organic N fertilizers on the nitrification and denitrification processes, and consequently on N2O and NO emissions. Therefore, a field experiment was carried out on an irrigated sandy loam soil under Mediterranean conditions during the maize (Zea mays L.) growing season. Untreated pig slurry (UPS) both with and without the nitrification inhibitor dicyandiamide (UPS + DCD), digested thin pig slurry fraction (DTP), composted solid fraction of slurry mixed with urea (CPS + U) and composted municipal solid waste mixed with urea (MSW + U) were applied at a rate of 175 kg available N ha 1. Their emissions were compared with those from urea (U) and a control treatment to which no nitrogen fertilization was administered (Control). Accumulated nitrous oxide losses during the crop season ranged from 6.0 to 9.3 kg N2O-N ha 1 for the Control and CPS + U, respectively, whereas nitric oxide losses ranged from 0.01 to 0.23 kg NO-N ha 1, for the Control and U, respectively. The use of digested slurries mitigated N2O emission by 25% in relation to untreated pig slurry, but NO emissions were similar for both treatments. Dicyandiamide reduced N2O and NO emissions by 64 and 78% with respect to slurry without the inhibitor. An indirect effect of DCD on denitrification was also observed, with a reduction of 32% in denitrification with respect to the slurry without the inhibitor. In this case, the greatest reduction in denitrification losses occurred during the irrigation period. Composts mixed with urea reduced NO emissions by 56% (CPS + U) and 85% (MSW + U) in relation to the urea treatment, but its effect on N2O depended on the type of compost involved: CPS + U increased N2O emission by 27%, whereas MSW + U reduced it by 55% in relation to urea. Denitrification was the most important process responsible for N2O emissions when organic fertilizers were applied to the soil, while nitrification was the most important for the inorganic fertilizer. The C:N ratio of fertilizers was a good predictor of their NO emissions, denitrification losses and N2O/N2 ratio. On the other hand, added soluble N was a good predictor for cumulative N2O emissions during the period before irrigation. This work shows that an appropriate selection of organic fertilizers based on their composition could be used to mitigate emissions of the atmospheric pollutants NO and N2O in comparison with urea.", "keywords": ["2. Zero hunger", "Nitrous oxide", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Nitric oxide", "04 agricultural and veterinary sciences", "01 natural sciences", "6. Clean water", "Pig slurry", "Organic fertilizers", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2006.11.020"}, {"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.2006.11.020", "name": "item", "description": "10.1016/j.agee.2006.11.020", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2006.11.020"}, {"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": "10.1007/s00442-005-0222-1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:35Z", "type": "Journal Article", "created": "2005-10-04", "title": "Variations In Soil N Cycling And Trace Gas Emissions In Wet Tropical Forests", "description": "We used a previously described precipitation gradient in a tropical montane ecosystem of Hawai'i to evaluate how changes in mean annual precipitation (MAP) affect the processes resulting in the loss of N via trace gases. We evaluated three Hawaiian forests ranging from 2200 to 4050 mm year-1 MAP with constant temperature, parent material, ecosystem age, and vegetation. In situ fluxes of N2O and NO, soil inorganic nitrogen pools (NH4+ and NO3-), net nitrification, and net mineralization were quantified four times over 2 years. In addition, we performed 15N-labeling experiments to partition sources of N2O between nitrification and denitrification, along with assays of nitrification potential and denitrification enzyme activity (DEA). Mean NO and N2O emissions were highest at the mesic end of the gradient (8.7+/-4.6 and 1.1+/-0.3 ng N cm-2 h-1, respectively) and total oxidized N emitted decreased with increased MAP. At the wettest site, mean trace gas fluxes were at or below detection limit (Conservation agriculture is often assumed to reduce soil N2O emissions. Yet, studies analyzing the specific effect of conservation agriculture practices on N2O emissions give contradictory results. Herein, we synthesized a comprehensive database on the three main conservation agriculture practices (cover crops, diversified crop rotations, and no-till and/or reduced tillage (NT/RT)) to elucidate the role of conservation practices on N2O emissions. Further, we used a random meta-forest approach to identify the most important predictors of the effects of these practices on soil N2O emissions. Averaged across all comparisons, NT/RT significantly decreased soil N2O emissions by 11% (95% CI: \uffe2\uff80\uff9319 to \uffe2\uff80\uff931%) compared to conventional tillage. The reductions due to NT/RT were more commonly observed in humid climates and in soils with an initial carbon content < 20 g kg\uffe2\uff80\uff931. The implementation of cover crops and diversified crop rotations led to variable effects on soil N2O emissions. Cover crops were more likely to reduce soil N2O emissions at neutral soil pH, and in soils with intermediate carbon (~20 g kg\uffe2\uff80\uff931) and nitrogen (~3 g kg\uffe2\uff80\uff931) contents. Diversified crop rotations tended to increase soil N2O emissions in temperate regions and neutral to alkaline soils. Our results provide a comprehensive predictive framework to understand the conditions in which the adoption of various conservation agriculture practices can contribute to climate change mitigation. Combining these results with a similar mechanistic understanding of conservation agriculture impacts on ecosystem services and crop production will pave the way for a wider adoption globally of these management practices.3% of the N deposition rate were calculated. This suggests that N2O losses of more than 3% of the N input can be indicative of soil ecosystems where the N input exceeds its demand. For NO a more limited data set showed losses ranging from 1.3 to 20% of the elevated N input. It was calculated that NH3 emissions from all intensive pig and poultry farms in Great Britain accounted for 18 t N2O\ue5f8N year\u22121 and that poultry farms accounted for less than 3 t NO\ue5f8N year\u22121.", "keywords": ["Nitrous oxide", "nitric oxide", "13. Climate action", "15. Life on land", "soils", "01 natural sciences", "N deposition", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/b978-0-08-043201-4.50067-8"}, {"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/b978-0-08-043201-4.50067-8", "name": "item", "description": "10.1016/b978-0-08-043201-4.50067-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/b978-0-08-043201-4.50067-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1998-01-01T00:00:00Z"}}, {"id": "10.1016/j.agee.2005.08.021", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:37Z", "type": "Journal Article", "created": "2005-10-14", "title": "Nitrous Oxide Emissions From Organic And Conventional Crop Rotations In Five European Countries", "description": "Abstract Nitrous oxide (N2O) emissions from agriculture are currently estimated from N inputs using emission factors, and little is known about the importance of regional or management-related differences. This paper summarizes the results of a study in which N2O emission rates were recorded on 15\u201326 occasions during a 12-month period in organic and conventional dairy crop rotations in five European countries (Austria, Denmark, Finland, Italy, UK). A common methodology based on static chambers was used for N2O flux measurements, and N2O data were compiled together with information about N inputs (from fertilizers, N2 fixation, atmospheric deposition and excretal returns), crop rotations and soil properties. Organic rotations received only manure as N fertilizer, while manure accounted for 0\u2013100% of fertilizer N in conventional rotations. A linear regression model was used to examine effects of location, system and crop category on N2O emissions, while a second model examined effects of soil properties. Nitrous oxide emissions were higher from conventional than from organic crop rotations except in Austria and, according to the statistical analysis, the differences between locations and crop categories were significant. Ammonium was significantly related to N2O emissions, although this effect was dominated by observations from a grazing system. Despite the limited number of samplings, annual emissions were estimated by interpolation. Across the two systems and five locations there was a significant relationship between total N inputs and N2O emissions at the crop rotation level which indicated that annually 1.6\u00a0\u00b1\u00a00.2% (mean\u00a0\u00b1\u00a0standard error) of total N inputs were lost as N2O, while there was a background emission of 1.4\u00a0\u00b1\u00a00.3\u00a0kg\u00a0N2O-N\u00a0ha\u22121\u00a0year\u22121. Although this measurement program emphasized system effects at the expense of high temporal resolution, the results indicate that N input is a significant determinant for N2O emissions from agricultural soils.", "keywords": ["2. Zero hunger", "nitrous oxide", "luonnonmukainen maataloustuotanto", "dityppioksidi", "04 agricultural and veterinary sciences", "rotational cropping", "15. Life on land", "typen oksidit", "nitrogen oxides", "13. Climate action", "crop rotations", "soil properties", "luomutuotanto", "0401 agriculture", " forestry", " and fisheries", "p\u00e4\u00e4st\u00f6t", "Ka", "Eurooppa"], "contacts": [{"organization": "Petersen, Soren O., Regina, Kristiina, P\u00f6llinger, Alfred, Rigler, Elisabeth, Valli, Laura, Yamulki, Sirwan, Esala, Martti, Fabbri, Claudio, Syv\u00e4salo, Eija, Vinther, Finn P.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2005.08.021"}, {"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.2005.08.021", "name": "item", "description": "10.1016/j.agee.2005.08.021", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2005.08.021"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-02-01T00:00:00Z"}}, {"id": "10.1016/j.agee.2013.06.016", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:46Z", "type": "Journal Article", "created": "2013-07-25", "title": "Two-Year Simultaneous Records Of N2o And No Fluxes From A Farmed Cropland In The Northern China Plain With A Reduced Nitrogen Addition Rate By One-Third", "description": "Abstract Given the common problem of fertilizer overuse, agronomists are calling for a reduction of the high nitrogen dose by 1/3. We carried out a field experiment over two full winter wheat\u2013summer maize rotations in the North China Plain (NCP) to determine whether this degree of nitrogen reduction will significantly reduce the emissions of nitrous oxide (N2O) and nitric oxide (NO). Three treatments were investigated in the field trial: a control with no nitrogen application, the conventional practice with nitrogen over-application and the optimal practice with a reduced dose of nitrogen by 1/3. Our observations across all treatments over the experimental period reveal significant correlations of the fluxes of either gas with soil temperature and moisture as well as the concentrations of soil ammonium, nitrate and dissolvable organic carbon. There were strong correlations within the functions of the dual Arrhenius and Michaelis\u2013Menten kinetics, giving apparent activation energy values of 40\u201397 and 59\u201392\u00a0kJ\u00a0mol\u22121 for N2O and NO fluxes, respectively. Our results provide annual direct emission factors of 0.48\u20130.96% for N2O and 0.15\u20130.47% for NO and demonstrate a significant correlation between N2O emission induced by fertilization and fertilizer nitrogen use efficiency (NUE). The correlation indicates a significant potential of N2O mitigation via enhancing NUEs. A reduction in the nitrogen dose did not obviously mitigate either the annual NO emission in both rotations or the annual N2O emission in the second one. However, nitrogen reduction significantly decreased the annual total N2O emission by 38% during the first rotation. These inconsistencies in the responses of N2O emission to the reduced nitrogen dose can be attributed to improper fertilization practices, such as broadcasting urea prior to heavy rainfalls or irrigation events during the maize season, which implies a need for further fertilization practice options/techniques in addition to the reduction of nitrogen doses.", "keywords": ["Michaelis\u00e2\u20ac\u201cMenten kinetics", "2. Zero hunger", "Nitrous oxide (N2O)", "Nitric oxide (NO)", "Nitrogen use efficiency", "13. Climate action", "Arrhenius kinetics", "0401 agriculture", " forestry", " and fisheries", "Direct emission factor", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2013.06.016"}, {"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.2013.06.016", "name": "item", "description": "10.1016/j.agee.2013.06.016", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2013.06.016"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-09-01T00:00:00Z"}}, {"id": "10.1016/j.agee.2013.09.013", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:46Z", "type": "Journal Article", "created": "2013-10-29", "title": "Effects Of Grass-Clover Management And Cover Crops On Nitrogen Cycling And Nitrous Oxide Emissions In A Stockless Organic Crop Rotation", "description": "Nitrogen (N) supply in stockless organic farming may be improved through use of grass-clover for anaerobic digestion, producing biogas and digested manure for use as fertilizer in the crop rotation. We studied the effects of grass-clover management on N cycling, nitrous oxide (N2O) emissions and cash-crop yields in an organic arable crop rotation on a sandy loam soil in a cool temperate climate. The four-course crop rotation included spring barley (with undersown grass-clover), grass-clover, potato and winter wheat (with undersown cover crop). Two fertilization treatments were compared: \u201c\u2212M\u201d where plant material from grass-clover cuts was left in the field to decompose and no fertilizer or manure was applied to any crop in the rotation; and \u201c+M\u201d where plant material from grass-clover cuts was harvested and equivalent amounts of N in digested manure used for fertilization of cash crops in the rotation (spring barley, potato and winter wheat); actual digestion of grass-clover cuttings was not possible, instead digested pig manure was used as substitute for digested grass-clover. Nitrous oxide fluxes were monitored between April 2008 and May 2009. In general, application of digested manure had little or no effect on N2O emissions. Periods of high N2O emissions coincided with cover crop and grass-clover residue turnover, with little added effect of digested manure application. Annual N2O emissions did not vary between fertilization treatments, but the +M treatment had cash crop dry matter yields that were 14% higher than in the \u2212M treatment, and cash crop N yields were increased by 40%. The results show that reallocation of nutrients from grass-clover to cash crops following anaerobic digestion can help solve problems with low N availability. However, issues remain regarding N2O from cover crops and grass-clover in spring.", "keywords": ["anaerobic digestion", "2. Zero hunger", "nitrous oxide", "organic farming", "13. Climate action", "nitrate leaching", "grass-clover", "0401 agriculture", " forestry", " and fisheries", "cover crop", "04 agricultural and veterinary sciences", "15. Life on land", "7. Clean energy", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2013.09.013"}, {"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.2013.09.013", "name": "item", "description": "10.1016/j.agee.2013.09.013", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2013.09.013"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-12-01T00:00:00Z"}}, {"id": "10.1016/j.agee.2015.07.027", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:48Z", "type": "Journal Article", "created": "2015-08-06", "title": "Biochar And Biochar-Compost As Soil Amendments: Effects On Peanut Yield, Soil Properties And Greenhouse Gas Emissions In Tropical North Queensland, Australia", "description": "This study investigated the effects of biochar and compost, applied individually or together, on soil fertility, peanut yield and greenhouse gas (GHG) emissions on a Ferralsol in north Queensland, Australia. The treatments were (1) inorganic fertilizer only (F) as a control; (2) 10 t ha\u22121 biochar + F (B + F); (3) 25 t compost + F (Com + F) ha\u22121; (4) 2.5 t B ha\u22121 + 25 t Com ha\u22121 mixed on site + F; and (5) 25 t ha\u22121 co-composted biochar-compost + F (COMBI + F). Application of B and COMBI increased seed yield by 23% and 24%, respectively. Biochar, compost and their mixtures significantly improved plant nutrient availability and use, which appeared critical in improving peanut performance. Soil organic carbon (SOC) increased from 0.93% (F only) to 1.25% (B amended), soil water content (SWC) from 18% (F only) to over 23% (B amended) and CEC from 8.9 cmol(+)/kg (F only) to over 10.3 cmol(+)/kg (organic amended). Peanut yield was significantly positively correlated with leaf chlorophyll content, nodulation number (NN), leaf nutrient concentration, SOC and SWC for the organic amendments. Fluxes of CO2 were highest for the F treatment and lowest for the COMBI treatment, whereas N2O flux was highest for the F treatment and all organic amended plots reduced N2O flux relative to the control. Principal component analysis indicates that 24 out of 30 characters in the first principal component (PRIN1) individually contributed substantial effects to the total variation between the treatments. Our study concludes that applications of B, Com, B + Com or COMBI have strong potential to, over time, improve SOC, SWC, soil nutrient status, peanut yield and abate GHG fluxes on tropical Ferralsols.", "keywords": ["2. Zero hunger", "compost", "nitrous oxide", "soil fertility", "carbon dioxide", "04 agricultural and veterinary sciences", "15. Life on land", "carbon sequestration", "630", "12. Responsible consumption", "13. Climate action", "XXXXXX - Unknown", "11. Sustainability", "0401 agriculture", " forestry", " and fisheries", "biochar"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2015.07.027"}, {"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.2015.07.027", "name": "item", "description": "10.1016/j.agee.2015.07.027", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2015.07.027"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-12-01T00:00:00Z"}}, {"id": "10.1016/j.atmosenv.2015.08.060", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:16:11Z", "type": "Journal Article", "created": "2015-08-23", "title": "Assessing Impacts Of Alternative Fertilizer Management Practices On Both Nitrogen Loading And Greenhouse Gas Emissions In Rice Cultivation", "description": "Nitrogen (N) losses and greenhouse gas (GHG) emissions from paddy rice fields contaminate water bodies and atmospheric environment. A 2-year (2012\u20132013) field experiment was conducted at a typical paddy rice field in a rural suburb of Shanghai, China. N losses and GHG emissions from the paddy field with alternative fertilizer management practices were simultaneously measured. Four treatments were tested in the experiment: applications of only chemical synthetic fertilizer urea (CT), only organic manure (OT), a combination of the two types of fertilizers (MT) and a control (CK). Results from the field study indicated that CT produced the highest seasonal N loading rate (18.79\u00a0kg\u00a0N/ha) and N2O emissions (1.81\u00a0kg\u00a0N2O/ha) but with the lowest seasonal CH4 emissions (69.09\u00a0kg\u00a0CH4/ha). With organic manure applied, MT and OT respectively reduced N loading by 21.86% and 30.41%, reduced N2O emissions by 28.34% and 69.41%, but increased CH4 emissions by 137% and 310% in comparison with CT. However, the net impact of CH4 and N2O emissions on global warming was enhanced when organic manure was applied. In addition, CT and MT produced the optimal rice yield during the experimental period, while OT treatment led to a yield reduction by 9.29% compared with CT. In conclusion, the impacts of alternative fertilizer management practices on ecosystem services ought to be assessed specifically due to the great variations across rice yields, N loss and GHG emissions.", "keywords": ["2. Zero hunger", "Nitrogen loss", "Nitrous oxide", "Runoff", "04 agricultural and veterinary sciences", "15. Life on land", "7. Clean energy", "6. Clean water", "12. Responsible consumption", "Paddy rice field", "13. Climate action", "11. Sustainability", "Leaching", "0401 agriculture", " forestry", " and fisheries", "Methane"], "contacts": [{"organization": "Zhao, Zheng, Yue, Yubo, Sha, Zhimin, Li, Changsheng, Deng, Jia, Zhang, Hanlin, Gao, Maofang, Cao, Linkui,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.atmosenv.2015.08.060"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Atmospheric%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.atmosenv.2015.08.060", "name": "item", "description": "10.1016/j.atmosenv.2015.08.060", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.atmosenv.2015.08.060"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-10-01T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2004.04.043", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:16:22Z", "type": "Journal Article", "created": "2004-07-30", "title": "Effects Of Environmental Factors On N2o Emission From And Ch4 Uptake By The Typical Grasslands In The Inner Mongolia", "description": "The fluxes of N2O emission from and CH4 uptake by the typical semi-arid grasslands in the Inner Mongolia, China were measured in 1998-1999. Three steppes, i.e. the ungrazed Leymus chinensis (LC), the moderately grazed Leymus chinensis (LC) and the ungrazed Stipa grandis (SG), were investigated, at a measurement frequency of once per week in the growing seasons and once per month in the non-growing seasons of the LC steppes. In addition, four diurnal-cycles of the growing seasons of the LC steppes, each in an individual stage of grass growth, were measured. The investigated steppes play a role of source for the atmospheric N2O and sink for the atmospheric CH4, with a N2O emission flux of 0.06-0.21 kg N ha(-1) yr(-1) and a CH4 uptake flux of 1.8-2.3 kg C ha(-1) yr(-1). Soil moisture primarily and positively regulates the spatial and seasonal variability of N2O emission. The usual difference in soil moisture among various semi-arid steppes does not lead to significantly different CH4 uptake intensities. Soil moisture, however, negatively regulates the seasonal variability in CH4 uptake. Soil temperature of the most top layer might be the primary driving factor for CH4 uptake when soil moisture is relatively low. The annual net emission of N2O and CH4 from the ungrazed LC steppe, the moderately grazed LC steppe and the ungrazed SG steppe is at a CO2 equivalent rate of 7.7, 0.8 and -7.5 kg CO2-C ha(-1) yr(-1), respectively, which is at an ignorable level. This implies that the role of the semi-arid grasslands in the atmospheric greenhouse effect in terms of net emission of greenhouse gases (CO2, CH4 and N2O) may exclusively depend upon the net exchange of net ecosystem CO2 exchange.", "keywords": ["2. Zero hunger", "China", "Time Factors", "Atmosphere", "Nitrous Oxide", "Temperature", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Poaceae", "01 natural sciences", "Soil", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Methane", "Ecosystem", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2004.04.043"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemosphere", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.chemosphere.2004.04.043", "name": "item", "description": "10.1016/j.chemosphere.2004.04.043", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2004.04.043"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-01-01T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2009.06.053", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:16:22Z", "type": "Journal Article", "created": "2009-08-03", "title": "Impacts Of Woodchip Biochar Additions On Greenhouse Gas Production And Sorption/Degradation Of Two Herbicides In A Minnesota Soil", "description": "A potential abatement to increasing levels of carbon dioxide (CO(2)) in the atmosphere is the use of pyrolysis to convert vegetative biomass into a more stable form of carbon (biochar) that could then be applied to the soil. However, the impacts of pyrolysis biochar on the soil system need to be assessed before initiating large scale biochar applications to agricultural fields. We compared CO(2) respiration, nitrous oxide (N(2)O) production, methane (CH(4)) oxidation and herbicide retention and transformation through laboratory incubations at field capacity in a Minnesota soil (Waukegan silt loam) with and without added biochar. CO(2) originating from the biochar needs to be subtracted from the soil-biochar combination in order to elucidate the impact of biochar on soil respiration. After this correction, biochar amendments reduced CO(2) production for all amendment levels tested (2, 5, 10, 20, 40 and 60% w/w; corresponding to 24-720 tha(-1) field application rates). In addition, biochar additions suppressed N(2)O production at all levels. However, these reductions were only significant at biochar amendment levels >20% w/w. Biochar additions also significantly suppressed ambient CH(4) oxidation at all levels compared to unamended soil. The addition of biochar (5% w/w) to soil increased the sorption of atrazine and acetochlor compared to non-amended soils, resulting in decreased dissipation rates of these herbicides. The recalcitrance of the biochar suggests that it could be a viable carbon sequestration strategy, and might provide substantial net greenhouse gas benefits if the reductions in N(2)O production are lasting.", "keywords": ["Greenhouse Effect", "2. Zero hunger", "Toluidines", "Herbicides", "Minnesota", "Nitrous Oxide", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "01 natural sciences", "6. Clean water", "12. Responsible consumption", "Soil", "13. Climate action", "Charcoal", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Atrazine", "Adsorption", "Gases", "Methane", "Oxidation-Reduction", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2009.06.053"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemosphere", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.chemosphere.2009.06.053", "name": "item", "description": "10.1016/j.chemosphere.2009.06.053", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2009.06.053"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-10-01T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2012.04.043", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:16:22Z", "type": "Journal Article", "created": "2012-05-13", "title": "Effectiveness Of Urease Inhibition On The Abatement Of Ammonia, Nitrous Oxide And Nitric Oxide Emissions In A Non-Irrigated Mediterranean Barley Field", "description": "Urea is considered the cheapest and most commonly used form of inorganic N fertilizer worldwide. However, its use is associated with emissions of ammonia (NH(3)), nitrous oxide (N(2)O) and nitric oxide (NO), which have both economic and environmental impact. Urease activity inhibitors have been proposed as a means to reduce NH(3) emissions, although limited information exists about their effect on N(2)O and NO emissions. In this context, a field experiment was carried out with a barley crop (Hordeum vulgare L.) under Mediterranean conditions to test the effectiveness of the urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) on reducing these gaseous N losses from surface applied urea. Crop yield, soil mineral N concentrations, dissolved organic carbon (DOC), denitrification potential, NH(3), N(2)O and NO fluxes were measured during the growing season. The inclusion of the inhibitor reduced NH(3) emissions in the 30 d following urea application by 58% and net N(2)O and NO emissions in the 95 d following urea application by 86% and 88%, respectively. NBPT addition also increased grain yield by 5% and N uptake by 6%, although neither increase was statistically significant. Under the experimental conditions presented here, these results demonstrate the potential of the urease inhibitor NBPT in abating NH(3), N(2)O and NO emissions from arable soils fertilized with urea, slowing urea hydrolysis and releasing lower concentrations of NH(4)(+) to the upper soil layer.", "keywords": ["2. Zero hunger", "Nitrous Oxide", "Hordeum", "04 agricultural and veterinary sciences", "Nitric Oxide", "Urease", "6. Clean water", "Organophosphorus Compounds", "Ammonia", "Air Pollution", "Urea", "0401 agriculture", " forestry", " and fisheries", "Enzyme Inhibitors", "Fertilizers"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2012.04.043"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemosphere", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.chemosphere.2012.04.043", "name": "item", "description": "10.1016/j.chemosphere.2012.04.043", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2012.04.043"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-09-01T00:00:00Z"}}, {"id": "10.1016/j.chemosphere.2011.08.031", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:16:22Z", "type": "Journal Article", "created": "2011-09-22", "title": "Impact Of Biochar Application To A Mediterranean Wheat Crop On Soil Microbial Activity And Greenhouse Gas Fluxes", "description": "Biochar has been recently proposed as a management strategy to improve crop productivity and global warming mitigation. However, the effect of such approach on soil greenhouse gas fluxes is highly uncertain and few data from field experiments are available. In a field trial, cultivated with wheat, biochar was added to the soil (3 or 6 kg m(-2)) in two growing seasons (2008/2009 and 2009/2010) so to monitor the effect of treatments on microbial parameters 3 months and 14 months after char addition. N(2)O, CH(4) and CO(2) fluxes were measured in the field during the first year after char addition. Biochar incorporation into the soil increased soil pH (from 5.2 to 6.7) and the rates of net N mineralization, soil microbial respiration and denitrification activity in the first 3 months, but after 14 months treated and control plots did not differ significantly. No changes in total microbial biomass and net nitrification rate were observed. In char treated plots, soil N(2)O fluxes were from 26% to 79% lower than N(2)O fluxes in control plots, excluding four sampling dates after the last fertilization with urea, when N(2)O emissions were higher in char treated plots. However, due to the high spatial variability, the observed differences were rarely significant. No significant differences of CH(4) fluxes and field soil respiration were observed among different treatments, with just few exceptions. Overall the char treatments showed a minimal impact on microbial parameters and GHG fluxes over the first 14 months after biochar incorporation.", "keywords": ["Crops", " Agricultural", "Greenhouse Effect", "Nitrous Oxide", "Biochar; CH; 4; CO; 2; Denitrification; N; 2; O; Nitrification;", "630", "12. Responsible consumption", "Fertilizers", "Soil Microbiology", "Triticum", "2. Zero hunger", "CH4", "Bacteria", "N2O", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Nitrification", "6. Clean water", "Biochar", "13. Climate action", "Charcoal", "Denitrification", "0401 agriculture", " forestry", " and fisheries", "CO2", "Gases", "Methane", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1016/j.chemosphere.2011.08.031"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemosphere", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.chemosphere.2011.08.031", "name": "item", "description": "10.1016/j.chemosphere.2011.08.031", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.chemosphere.2011.08.031"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-11-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2006.03.055", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:16:39Z", "type": "Journal Article", "created": "2006-08-07", "title": "Fluxes Of N2o, Ch4 And Co2 In A Meadow Ecosystem Exposed To Elevated Ozone And Carbon Dioxide For Three Years", "description": "Open-top chambers (OTCs) were used to evaluate the effects of moderately elevated O3 (40-50 ppb) and CO2 (+100 ppm) and their combination on N2O, CH4 and CO2 fluxes from ground-planted meadow mesocosms. Bimonthly measurements in 2002-2004 showed that the daily fluxes of N2O, CH4 and CO2 reacted mainly to elevated O3, while the fluxes of CO2 also responded to elevated CO2. However, the fluxes did not show any marked response when elevated O3 and CO2 were combined. N2O and CO2 emissions were best explained by soil water content and air and soil temperatures, and they were not clearly associated with potential nitrification and denitrification. Our results suggest that the increasing O3 and/or CO2 concentrations may affect the N2O, CH4 and CO2 fluxes from the soil, but longer study periods are needed to verify the actual consequences of climate change for greenhouse gas emissions.", "keywords": ["hiilidioksidi", "570", "Climate", "elevated carbon dioxide", "Nitrous Oxide", "elevated ozone", "Poaceae", "metaani", "01 natural sciences", "niityt", "open-top chambers", "kohotettu otsonipitoisuus", "typen oksidit", "Magnoliopsida", "Oxidants", " Photochemical", "Ozone", "greenhouse gases", "Soil Pollutants", "otsoni", "Weather", "Ecosystem", "0105 earth and related environmental sciences", "Air Pollutants", "Fabaceae", "Environmental Exposure", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "004", "kasvihuonekaasut", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "avoin kammio", "Environmental Pollutants", "Ka", "Seasons", "kohotettu hiilidioksidipitoisuus", "Methane", "meadows"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2006.03.055"}, {"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.2006.03.055", "name": "item", "description": "10.1016/j.envpol.2006.03.055", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2006.03.055"}, {"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.envpol.2011.02.024", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:16:40Z", "type": "Journal Article", "created": "2011-06-08", "title": "Developments In Greenhouse Gas Emissions And Net Energy Use In Danish Agriculture - How To Achieve Substantial Co2 Reductions?", "description": "Greenhouse gas (GHG) emissions from agriculture are a significant contributor to total Danish emissions. Consequently, much effort is currently given to the exploration of potential strategies to reduce agricultural emissions. This paper presents results from a study estimating agricultural GHG emissions in the form of methane, nitrous oxide and carbon dioxide (including carbon sources and sinks, and the impact of energy consumption/bioenergy production) from Danish agriculture in the years 1990-2010. An analysis of possible measures to reduce the GHG emissions indicated that a 50-70% reduction of agricultural emissions by 2050 relative to 1990 is achievable, including mitigation measures in relation to the handling of manure and fertilisers, optimization of animal feeding, cropping practices, and land use changes with more organic farming, afforestation and energy crops. In addition, the bioenergy production may be increased significantly without reducing the food production, whereby Danish agriculture could achieve a positive energy balance.", "keywords": ["Buildings and machinery", "Greenhouse Effect", "Landscape and recreation", "Livestock", "Denmark", "Nitrous Oxide", "Air and water emissions", "Models", " Biological", "7. Clean energy", "01 natural sciences", "12. Responsible consumption", "Soil", "11. Sustainability", "Farm nutrient management", "Animals", "Animal Husbandry", "Fertilizers", "0105 earth and related environmental sciences", "2. Zero hunger", "Air Pollutants", "Nutrient turnover", "Agriculture", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Manure", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2011.02.024"}, {"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.2011.02.024", "name": "item", "description": "10.1016/j.envpol.2011.02.024", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2011.02.024"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-11-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2014.09.014", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:16:40Z", "type": "Journal Article", "created": "2014-10-09", "title": "High Concentrations Of Polycyclic Aromatic Hydrocarbons (Naphthalene, Phenanthrene And Pyrene) Failed To Explain Biochar'S Capacity To Reduce Soil Nitrous Oxide Emissions", "description": "The presence of polycyclic aromatic hydrocarbons (PAHs) has been postulated as a mechanism by which biochar might mitigate N(2)O emissions. We studied whether and to what extent N(2)O emissions were influenced by the three most abundant PAHs in biochar: naphthalene, phenanthrene and pyrene. We hypothesised that biochars contaminated with PAHs would show a larger N(2)O mitigation capacity and that increasing PAH concentrations in biochar would lead to higher mitigation potentials. Our results demonstrate that the high-temperature biochar (550 \u00b0C) had a higher capacity to mitigate soil N(2)O emissions than the low-temperature biochar (350 \u00b0C). At low PAH concentrations, PAHs do not significantly contribute to the reductions in soil N(2)O emissions; while biochar stimulated soil N(2)O emissions when it was spiked with high concentrations of PAHs. This study suggests that the impact of biochar on soil N(2)O emissions is due to other compositional and/or structural properties of biochar rather than to PAH concentration.", "keywords": ["2. Zero hunger", "Hot Temperature", "Pyrenes", "Nitrous Oxide", "04 agricultural and veterinary sciences", "Naphthalenes", "Phenanthrenes", "15. Life on land", "7. Clean energy", "01 natural sciences", "6. Clean water", "12. Responsible consumption", "Soil", "Models", " Chemical", "13. Climate action", "Charcoal", "11. Sustainability", "0401 agriculture", " forestry", " and fisheries", "Polycyclic Aromatic Hydrocarbons", "Environmental Restoration and Remediation", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2014.09.014"}, {"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.2014.09.014", "name": "item", "description": "10.1016/j.envpol.2014.09.014", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2014.09.014"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-01-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2014.09.010", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:16:40Z", "type": "Journal Article", "created": "2014-10-11", "title": "Annual Nitric And Nitrous Oxide Fluxes From Chinese Subtropical Plastic Greenhouse And Conventional Vegetable Cultivations", "description": "As intensive vegetable cultivation is rapidly expanding in China and elsewhere worldwide, its environmental consequences on nitrous oxide (N(2)O) and nitric oxide (NO) emissions deserve attention. We measured N(2)O and NO fluxes simultaneously for a full year from Chinese subtropical vegetable fields. Clearly, both N(2)O and NO emissions varied greatly in different vegetable crop seasons within a year, highlighting the importance of whole-year measurement for achieving temporally accurate annual direct emission factors. A revised 'hole-in-the-pipe' model well described quantitative relationships between N(2)O plus NO fluxes and soil-specific conditions. Annual background N(2)O and NO emissions were 0.73-5.0 and 0.26-0.56 kg N ha(-1) yr(-1), respectively, for the vegetable cultivations. The farmers' fertilization practice increased N(2)O and NO emissions. Annual direct emission factors for greenhouse and conventional vegetable fields, respectively, were 1.1% and 1.9% for N(2)O, and 0.36% and 0.32% for NO, indicating there is a need to consider a differentiation of emission factors for managed vegetable cultivations.", "keywords": ["2. Zero hunger", "Air Pollutants", "China", "Nitrous Oxide", "Agriculture", "Gardening", "04 agricultural and veterinary sciences", "15. Life on land", "Nitric Oxide", "01 natural sciences", "Soil", "13. Climate action", "Vegetables", "0401 agriculture", " forestry", " and fisheries", "Seasons", "14. Life underwater", "Plastics", "Environmental Monitoring", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2014.09.010"}, {"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.2014.09.010", "name": "item", "description": "10.1016/j.envpol.2014.09.010", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2014.09.010"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-01-01T00:00:00Z"}}, {"id": "10.1016/j.envpol.2018.12.059", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:16:41Z", "type": "Journal Article", "created": "2018-12-23", "title": "The effects of controlled release urea on maize productivity and reactive nitrogen losses: A meta-analysis", "description": "Application of controlled release urea (CRU) is recommended to reduce the undesirable environmental effects resulting from urea application. However, the overall effects of CRU on maize productivity and reactive nitrogen (N) losses remain unclear. Our global meta-analysis based on 866 observations of 120 studies indicated that application of CRU instead of urea (same N rate) increased maize yield by 5.3% and nitrogen use efficiency (NUE) by 24.1%, and significantly decreased nitrous oxide (N2O) emission, N leaching and ammonia (NH3) volatilization by 23.8%, 27.1% and 39.4%, respectively. The increase of NUE and reduction of N2O emission by CRU application were greater with medium and high N rates (150\u202f\u2264\u202fN\u202f<\u202f200 and N\u202f\u2265\u202f200\u202fkg\u202fN ha-1) than with low N rates. The reduction in N2O emission and N leaching with CRU application were enhanced when soil organic carbon (SOC) content was <15.0\u202fg\u202fkg-1, and soil texture was medium or coarse. The reduction in N2O emission and NH3 volatilization with CRU were greater in soils with pH\u202f\u2265\u202f6.0. We concluded that use of CRU should be encouraged for maize production, especially on light-textured soils with low organic matter content.", "keywords": ["2. Zero hunger", "Nitrogen", "Nitrous Oxide", "Agriculture", "04 agricultural and veterinary sciences", "Zea mays", "01 natural sciences", "Soil", "13. Climate action", "Delayed-Action Preparations", "Urea", "0401 agriculture", " forestry", " and fisheries", "Edible Grain", "Fertilizers", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.envpol.2018.12.059"}, {"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.2018.12.059", "name": "item", "description": "10.1016/j.envpol.2018.12.059", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.envpol.2018.12.059"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-03-01T00:00:00Z"}}, {"id": "10.1016/j.geoderma.2014.07.020", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:03Z", "type": "Journal Article", "created": "2014-08-17", "title": "Methane And Nitrous Oxide Emissions From Flooded Rice Fields As Affected By Water And Straw Management Between Rice Crops", "description": "Abstract Rice fields in the tropics can vary in water regime before production of rice on flooded soil, but relatively little is known about the effects of soil water regime and crop residue management between rice crops (i.e., fallow period) on methane (CH 4 ) and nitrous oxide (N 2 O) emissions during a subsequent rice crop. We measured CH 4 and N 2 O emissions during two cropping seasons in the Philippines from field plots exposed to contrasting treatments during the fallow before land preparation for rice cultivation. The fallow treatments were continuous soil flooding (flooded), soil drying with exclusion of rainfall (dry), soil drying with dry tillage (dry\u00a0+\u00a0tillage), and a control with soil drying and wetting from rainfall (dry and wet). All plots were subdivided into removal of all aboveground rice residues from the previous crop (without residue) and retention of standing biomass after harvest of the previous rice crop (with residue). Emitted gas was collected weekly using chambers. Fallow treatments greatly influenced greenhouse gas (GHG) emissions during rice growth. Methane emissions and global warming potential (GWP) in both cropping seasons were highest following the flooded fallow, intermediate following the dry and wet fallow, and lowest following dry and dry\u00a0+\u00a0tillage fallows. The GWP was higher with than without residue across all fallow treatments. Nitrous oxide emissions were small during the season, and CH 4 emissions contributed more than 90% of the cumulative GWP during the rice crop regardless of fallow and residue management. Soil drying between rice crops in the tropics can reduce CH 4 emissions and GWP during the subsequent rice crop.", "keywords": ["2. Zero hunger", "climate change", "nitrous oxide", "13. Climate action", "methane", "8. Economic growth", "rice straw", "0401 agriculture", " forestry", " and fisheries", "food security", "04 agricultural and veterinary sciences", "15. Life on land", "agriculture"], "contacts": [{"organization": "Sander, Bj\u00f6rn Ole, Samson M, Buresh, R.J.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.geoderma.2014.07.020"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Geoderma", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.geoderma.2014.07.020", "name": "item", "description": "10.1016/j.geoderma.2014.07.020", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.geoderma.2014.07.020"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-12-01T00:00:00Z"}}, {"id": "10.1016/j.jenvman.2014.06.004", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:13Z", "type": "Journal Article", "created": "2014-07-01", "title": "Characteristics Of Nitrous Oxide Emissions And The Affecting Factors From Vegetable Fields On The North China Plain", "description": "Nitrous oxide (N2O) is one of the most important greenhouse gases emitted from fertilized agricultural soils. Vegetable fields, mostly managed under intensive mode with higher rate nitrogen application, frequent irrigation, and multiple planting-harvest cycles, does contribute to national GHG inventory greatly due to the increasing planting area in China. N2O emissions from four different fields - a maize field (maize), a newly established open-ground vegetable field converted from a maize field four years earlier (OV4), an established open-ground vegetable field converted from a maize field more than 20 years ago (OV20), and an established sunlight heated greenhouse vegetable field converted from a maize field more than 20 years ago (GV20) with four different fertilization treatments for the OV4 field were measured using the closed chamber method between March 15th, 2012 and March 14th, 2013 in suburban area of Beijing, North China Plain. Results showed that the annual N2O emissions from vegetable fields were 3.1-4.6 times higher than the typical maize field. All the N2O emission peaks were occurred after fertilization and the fertilization associated emissions accounted for 81.1% (ranging from 77.0% to 87.2%) of the annual N2O emission with 22.2% time duration in the whole year for vegetable fields. Both the occurrence data and duration of N2O emission peaks were associated with N input type (chemical or manure) and the application rate. The N2O emission peaks appeared earlier (on the 3rd day after application) and lasted shorter when only chemical N was applied; while they appeared later (on the 7th to 10th day after application) and lasted longer when the combination of manure and chemical N were applied. The magnitudes of N2O emission peaks increased when the N application rate was higher. Dicyandiamide (DCD) decreased N2O emissions by 30.1% and 21.1% in the spring cucumber and autumn cabbage seasons respectively (averaged of 24.7% over the whole year). Calculations showed that it is critical to estimate the emission factor (EF) by N type in order to decrease the uncertainty of regional N2O emissions when using EF as calculation method. EFs were 0.20% and 0.42% for manure N in the cucumber and cabbage seasons respectively; and were 0.55-1.30% and 0.8-1.59% for chemical N in the cucumber and cabbage seasons respectively.", "keywords": ["Crops", " Agricultural", "2. Zero hunger", "Air Pollutants", "China", "13. Climate action", "Vegetables", "11. Sustainability", "Nitrous Oxide", "0401 agriculture", " forestry", " and fisheries", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "Environmental Monitoring"], "contacts": [{"organization": "He Zhang, Jing-wei Fan, Erda Lin, Tiantian Diao, Miao Lin, Hongliang Yan, Liping Guo, Liyong Xie,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.jenvman.2014.06.004"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jenvman.2014.06.004", "name": "item", "description": "10.1016/j.jenvman.2014.06.004", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jenvman.2014.06.004"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-11-01T00:00:00Z"}}, {"id": "10.1016/j.jenvman.2014.05.032", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:13Z", "type": "Journal Article", "created": "2014-06-18", "title": "Five Crop Seasons' Records Of Greenhouse Gas Fluxes From Upland Fields With Repetitive Applications Of Biochar And Cattle Manure", "description": "The application of char to agricultural land is recognized as a potential way to sequester atmospheric carbon (C) assimilated by plants in soil, thus decelerating global warming. Such a process would also be expected to improve plant growth and the physical and chemical properties of soil. However, field investigations of the effects of continuous char application have not been reported. In the present study, the effects of repetitive bamboo char application on CO2, CH4, and N2O flux from soil, soil C content, and crop yield were investigated at two upland fields over five crop seasons. Three treatments: chemical fertilizer (CF) applied plots (Control plot); cattle manure (CM) (10\u00a0t\u00a0ha(-1)) and CF applied plot (CM plot); and bamboo char (20\u00a0t\u00a0ha(-1)), cattle manure (10\u00a0t\u00a0ha(-1)), and CF applied plot (Char/CM plot), were arranged in each field. After three crop seasons, the fourth treatment with char was applied without CF (Char plot) was given to one of the fields. CM and/or char were applied every crop season. Gas fluxes were measured using the static chamber method. Seasonal variations in CO2 flux and total CO2 emissions were consistently similar between the CM and Char/CM plots and between the Char and Control plots. As such, the decomposition rate of bamboo char was quite small, and the positive or negative effect of char on CM decomposition was not significant in the fields. Soil C analysis provided confirmation of this. CM application enhanced N2O emission mainly in the summer crop season. The differences in total N2O emission between the Char/CM and CM plots as well as between the Char and Control plots were insignificant in most cases. Total CH4 flux was negligibly small in all cases. Although the yield of winter crop (broccoli) in the Char/CM plots was twice observed to be higher than that in the Control and CM plots at one of the fields, in general, the char application had no effect on overall crop yield. Thus, the repeated application of bamboo char had no significant influence on greenhouse gas emissions and crop yields, but a high C accumulating function was found.", "keywords": ["Crops", " Agricultural", "Greenhouse Effect", "2. Zero hunger", "Air Pollutants", "Nitrous Oxide", "Agriculture", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "01 natural sciences", "12. Responsible consumption", "Manure", "Random Allocation", "Soil", "Japan", "13. Climate action", "Charcoal", "Animals", "0401 agriculture", " forestry", " and fisheries", "Cattle", "Gases", "Seasons", "Fertilizers", "Methane", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Naoya Kanazaki, Akira Watanabe, Akira Shibata, Shuhei Makabe, Kosuke Ikeya, Yuki Sugiura,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.jenvman.2014.05.032"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Environmental%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.jenvman.2014.05.032", "name": "item", "description": "10.1016/j.jenvman.2014.05.032", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.jenvman.2014.05.032"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-11-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2006.12.026", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:27Z", "type": "Journal Article", "created": "2007-01-17", "title": "Nitrous Oxide Emissions From An Intensively Cultivated Maize\u2013Wheat Rotation Soil In The North China Plain", "description": "N2O emissions from a maize-wheat rotation field were monitored in the Fengqiu State Key Agro-Ecological Experimental Station (Fengqiu County, Henan Province, China) from June 2004 to June 2005. The experiment included four treatments: a bare (crop-absent) soil treated with 150 kg N ha-1 (WN150) and soils fertilized with 0 (N0), 150 (N150), and 250 (N250) kg N ha-1 and cropped with maize or wheat. The bulk of the N2O emissions occurred in pulses following the application of fertilizer N at soil temperatures of 15 degrees C or more. The application of fertilizer N significantly increased the N2O emission, from 636 g N2O-N ha-1 year-1 in the N0 treatment to 4480 g N2O-N ha-1 year-1 in the N250 treatment. However, this increase primarily occurred during the maize growing season. The emission factor of applied fertilizer N as N2O was 1.05-1.34% and 0.24-0.26% during the 105-day maize and 241-day wheat growing seasons, respectively, and was on average 0.61-0.77%. Increasing the rate of fertilizer application increased the emission factor during the maize growing season. The presence of maize appears to increase N2O emission by 45% versus bare soil during the maize growing season. And, N2O emission during the maize season were significantly related to CO2 production (R=0.43-0.81, n=30, P<0.05). N2O emission was greatly affected by soil moisture during the maize growing season and by soil temperature during the wheat growing season. The maximum rates of nitrification occurred when soil moisture was in the range of 45-60% WFPS, with the optimum value being approximately 50%. However, soil moisture influenced N2O emission only when the soil temperature was at the optimum level. It is suggested that reducing the application rate of basal fertilizer N during the maize growing season could decrease N2O emission.", "keywords": ["2. Zero hunger", "Air Pollutants", "China", "Nitrous Oxide", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "Zea mays", "6. Clean water", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "Seasons", "Weather", "Triticum", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2006.12.026"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2006.12.026", "name": "item", "description": "10.1016/j.scitotenv.2006.12.026", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2006.12.026"}, {"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.scitotenv.2012.05.029", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:27Z", "type": "Journal Article", "created": "2012-06-10", "title": "Greenhouse Gas Emissions Under Conservation Agriculture Compared To Traditional Cultivation Of Maize In The Central Highlands Of Mexico", "description": "In 1991, the 'International Maize and Wheat Improvement Center' (CIMMYT) started a field experiment in the rain fed Mexican highlands to investigate conservation agriculture (CA) as a sustainable alternative for conventional maize production practices (CT). CT techniques, characterized by deep tillage, monoculture and crop residue removal, have deteriorated soil fertility and reduced yields. CA, which combines minimum tillage, crop rotations and residue retention, restores soil fertility and increases yields. Soil organic matter increases in CA compared to CT, but increases in greenhouse gas emissions (GHG) in CA might offset the gains obtained to mitigate global warming. Therefore, CO(2), CH(4) and N(2)O emissions, soil temperature, C and water content were monitored in CA and CT treatments in 2010-2011. The cumulative GHG emitted were similar for CA and CT in both years, but the C content in the 0-60 cm layer was higher in CA (117.7 Mg C ha(-1)) than in CT (69.7 Mg C ha(-1)). The net global warming potential (GWP) of CA (considering soil C sequestration, GHG emissions, fuel use, and fertilizer and seeds production) was -7729 kg CO(2) ha(-1) y(-1) in 2008-2009 and -7892 kg CO(2) ha(-1) y(-1) in 2010-2011, whereas that of CT was 1327 and 1156 kg CO(2) ha(-1) y(-1). It was found that the contribution of CA to GWP was small compared to that of CT.", "keywords": ["Greenhouse Effect", "2. Zero hunger", "Nitrogen", "Nitrous Oxide", "Temperature", "Agriculture", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "maize", "Zea mays", "01 natural sciences", "Carbon", "6. Clean water", "12. Responsible consumption", "Soil", "13. Climate action", "greenhouse gases", "11. Sustainability", "0401 agriculture", " forestry", " and fisheries", "climate", "Methane", "Mexico", "agriculture", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2012.05.029"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2012.05.029", "name": "item", "description": "10.1016/j.scitotenv.2012.05.029", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2012.05.029"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-08-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2015.02.028", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:28Z", "type": "Journal Article", "created": "2015-03-07", "title": "Effects Of Straw Incorporation Along With Microbial Inoculant On Methane And Nitrous Oxide Emissions From Rice Fields", "description": "Incorporation of straw together with microbial inoculant (a microorganism agent, accelerating straw decomposition) is being increasingly adopted in rice cultivation, thus its effect on greenhouse gas (GHG) emissions merits serious attention. A 3-year field experiment was conducted from 2010 to 2012 to investigate combined effect of straw and microbial inoculant on methane (CH4) and nitrous oxide (N2O) emissions, global warming potential (GWP) and greenhouse gas intensity (GHGI) in a rice field in Jurong, Jiangsu Province, China. The experiment was designed to have treatment NPK (N, P and K fertilizers only), treatment NPKS (NPK plus wheat straw), treatment NPKSR (NPKS plus Ruilaite microbial inoculant) and treatment NPKSJ (NPKS plus Jinkuizi microbial inoculant). Results show that compared to NPK, NPKS increased seasonal CH4 emission by 280-1370%, while decreasing N2O emission by 7-13%. When compared with NPKS, NPKSR and NPKSJ increased seasonal CH4 emission by 7-13% and 6-12%, respectively, whereas reduced N2O emission by 10-27% and 9-24%, respectively. The higher CH4 emission could be attributed to the higher soil CH4 production potential triggered by the combined application of straw and microbial inoculant, and the lower N2O emission to the decreased inorganic N content. As a whole, the benefit of lower N2O emission was completely offset by increased CH4 emission, resulting in a higher GWP for NPKSR (5-12%) and NPKSJ (5-11%) relative to NPKS. Due to NPKSR and NPKSJ increased rice grain yield by 3-6% and 2-4% compared to NPKS, the GHGI values for NPKS, NPKSR and NPKSJ were comparable. These findings suggest that incorporating straw together with microbial inoculant would not influence the radiative forcing of rice production in the terms of per unit of rice grain yield relative to the incorporation of straw alone.", "keywords": ["2. Zero hunger", "Air Pollutants", "China", "Nitrous Oxide", "Agriculture", "Oryza", "04 agricultural and veterinary sciences", "Agricultural Inoculants", "15. Life on land", "Global Warming", "7. Clean energy", "6. Clean water", "12. Responsible consumption", "13. Climate action", "Air Pollution", "8. Economic growth", "0401 agriculture", " forestry", " and fisheries", "Methane"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2015.02.028"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2015.02.028", "name": "item", "description": "10.1016/j.scitotenv.2015.02.028", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2015.02.028"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-06-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2013.02.018", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:27Z", "type": "Journal Article", "created": "2013-03-07", "title": "Impact Of Urease Inhibitor On Ammonia And Nitrous Oxide Emissions From Temperate Pasture Soil Cores Receiving Urea Fertilizer And Cattle Urine", "description": "New Zealand's intensively grazed pastures receive the majority of nitrogen (N) input in the form of urea, which is the major constituent of animal urine and the most common form of mineral N in inorganic N fertilizers. In soil, urea is rapidly hydrolyzed to ammonium (NH4(+)) ions, a part of which may be lost as ammonia (NH3) and subsequently as nitrous oxide (N2O), which is a greenhouse gas. Two glasshouse experiments were conducted to study the effect of a urease inhibitor (UI), N-(n-butyl) thiophosphoric triamide (NBPT), commercially named Agrotain, applied with urine and urea on urea hydrolysis and NH3 and N2O emissions. Treatments included the commercially available products Sustain Yellow (urea+Agrotain+4% sulfur coating), Sustain Green (urea+Agrotain) and urea, and cattle urine (476 kg N ha(-1)) with and without Agrotain applied to intact soil cores of a fine sandy loam soil. The addition of Agrotain to urine and urea (i.e. Sustain Green) reduced NH3 emission by 22% to 47%, respectively. Agrotain was also effective in reducing N2O emissions from urine and Sustain Green by 62% and 48%, respectively. The reduction in N2O emissions varied with the type and amount of N applied and plant N uptake. Plant N uptake was significantly higher in the soil cores receiving Agrotain with urea than urea alone, but the slight increase in dry matter yield was non-significant. Hence, urease inhibitor reduced N losses through NH3 and N2O emissions, thereby increasing plant uptake of N.", "keywords": ["pasture", "2. Zero hunger", "nitrous oxide", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "urea", "04 agricultural and veterinary sciences", "ammonia", "nitrogen", "6. Clean water", "cattle urine", "12. Responsible consumption"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2013.02.018"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2013.02.018", "name": "item", "description": "10.1016/j.scitotenv.2013.02.018", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2013.02.018"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-11-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2013.02.054", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:27Z", "type": "Journal Article", "created": "2013-03-16", "title": "Pyrolysing Poultry Litter Reduces N2o And Co2 Fluxes", "description": "Application of poultry litter (PL) to soil can lead to substantial nitrous oxide (N2O) emissions due to the co-application of labile carbon (C) and nitrogen (N). Slow pyrolysis of PL to produce biochar may mitigate N2O emissions from this source, whilst still providing agronomic benefits. In a corn crop on ferrosol with similarly matched available N inputs of ca. 116 kg N/ha, PL-biochar plus urea emitted significantly less N2O (1.5 kg N2O-N/ha) compared to raw PL at 4.9 kg N2O-N/ha. Urea amendment without the PL-biochar emitted 1.2 kg N2O-N/ha, and the PL-biochar alone emitted only 0.35 kg N2O-N/ha. Both PL and PL-biochar resulted in similar corn yields and total N uptake which was significantly greater than for urea alone. Using stable isotope methodology, the majority (~80%) of N2O emissions were shown to be from non-urea sources. Amendment with raw PL significantly increased C mineralisation and the quantity of permanganate oxidisable organic C. The low molar H/C (0.49) and O/C (0.16) ratios of the PL-biochar suggest its higher stability in soil than raw PL. The PL-biochar also had higher P and K fertiliser value than raw PL. This study suggests that PL-biochar is a valuable soil amendment with the potential to significantly reduce emissions of soil greenhouse gases compared to the raw product. Contrary to other studies, PL-biochar incorporated to 100mm did not reduce N2O emissions from surface applied urea, which suggests that further field evaluation of biochar impacts, and methods of application of both biochar and fertiliser, are needed.", "keywords": ["2. Zero hunger", "Biochar", "C mineralisation", "Ferrosol", "Nitrous oxide", "Poultry litter", "550", "13. Climate action", "Crop productivity", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "7. Clean energy", "630"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2013.02.054"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2013.02.054", "name": "item", "description": "10.1016/j.scitotenv.2013.02.054", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2013.02.054"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-11-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2013.05.035", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:28Z", "type": "Journal Article", "created": "2013-06-10", "title": "Impact Of Elevated Co2 And Temperature On Soil C And N Dynamics In Relation To Ch4 And N2o Emissions From Tropical Flooded Rice (Oryza Sativa L.)", "description": "A field experiment was carried out to investigate the impact of elevated carbon dioxide (CO2) (CEC, 550 \u03bcmol mol(-1)) and elevated CO2+elevated air temperature (CECT, 550 \u03bcmol mol(-1) and 2\u00b0C more than control chamber (CC)) on soil labile carbon (C) and nitrogen (N) pools, microbial populations and enzymatic activities in relation to emissions of methane (CH4) and nitrous oxide (N2O) in a flooded alluvial soil planted with rice cv. Naveen in open top chambers (OTCs). The labile soil C pools, namely microbial biomass C, readily mineralizable C, water soluble carbohydrate C and potassium permanganate oxidizable C were increased by 27, 23, 38 and 37% respectively under CEC than CC (ambient CO2, 394 \u03bcmol mol(-1)). The total organic carbon (TOC) in root exudates was 28.9% higher under CEC than CC. The labile N fractions were also increased significantly (29%) in CEC than CC. Methanogens and denitrifier populations in rhizosphere were higher under CEC and CECT. As a result, CH4 and N2O-N emissions were enhanced by 26 and 24.6% respectively, under CEC in comparison to open field (UC, ambient CO2, 394 \u03bcmol mol(-1)) on seasonal basis. The global warming potential (GWP) was increased by 25% under CEC than CC. However, emissions per unit of grain yield under elevated CO2 and temperature were similar to those observed at ambient CO2. The stimulatory effect on CH4 and N2O emissions under CEC was linked with the increased amount of soil labile C, C rich root exudates, lowered Eh, higher Fe(+2) concentration and increased activities of methanogens and extracellular enzymes.", "keywords": ["2. Zero hunger", "Tropical Climate", "Chromatography", " Gas", "Nitrogen", "Iron", "Nitrous Oxide", "Temperature", "India", "Agriculture", "Oryza", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Global Warming", "Plant Roots", "Carbon", "6. Clean water", "Soil", "13. Climate action", "Rhizosphere", "Regression Analysis", "0401 agriculture", " forestry", " and fisheries", "Methane", "Soil Microbiology"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2013.05.035"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2013.05.035", "name": "item", "description": "10.1016/j.scitotenv.2013.05.035", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2013.05.035"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-09-01T00:00:00Z"}}, {"id": "10.1016/j.scitotenv.2014.03.141", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:17:28Z", "type": "Journal Article", "created": "2014-04-19", "title": "Effects Of Biochar And Other Amendments On The Physical Properties And Greenhouse Gas Emissions Of An Artificially Degraded Soil", "description": "Short and long-term impacts of biochar on soil properties under field conditions are poorly understood. In addition, there is a lack of field reports of the impacts of biochar on soil physical properties, gaseous emissions and C stability, particularly in comparison with other amendments. Thus, three amendments - biochar produced from oak at 650\u00b0C, humic acid (HA) and water treatment residual - (WTR) were added to a scalped silty-loam soil @ 0.5% (w/w) in triplicated plots under soybean. Over the 4-month active growing season, all amendments significantly increased soil pH, but the effect of biochar was the greatest. Biochar significantly increased soil-C by 7%, increased sub-nanopore surface area by 15% and reduced soil bulk density by 13% compared to control. However, only WTR amendment significantly increased soil nanopore surface area by 23% relative to the control. While total cumulative CH4 and CO2 emissions were not significantly affected by any amendment, cumulative N2O emission was significantly decreased in the biochar-amended soil (by 92%) compared to control over the growing period. Considering both the total gas emissions and the C removed from the atmosphere as crop growth and C added to the soil, WTR and HA resulted in net soil C losses and biochar as a soil C gain. However, all amendments reduced the global warming potential (GWP) of the soil and biochar addition even produced a net negative GWP effect. The short observation period, low application rate and high intra-treatment variation resulted in fewer significant effects of the amendments on the physicochemical properties of the soils than one might expect indicating further possible experimentation altering these variables. However, there was clear evidence of amendment-soil interaction processes affecting both soil properties and gaseous emissions, particularly for biochar, that might lead to greater changes with additional field emplacement time.", "keywords": ["Greenhouse Effect", "2. Zero hunger", "Air Pollutants", "Nitrogen", "Nitrous Oxide", "Agriculture", "04 agricultural and veterinary sciences", "Carbon Dioxide", "15. Life on land", "Global Warming", "6. Clean water", "Soil", "13. Climate action", "Air Pollution", "Charcoal", "0401 agriculture", " forestry", " and fisheries", "Fertilizers", "Environmental Restoration and Remediation"]}, "links": [{"href": "https://doi.org/10.1016/j.scitotenv.2014.03.141"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Science%20of%20The%20Total%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.scitotenv.2014.03.141", "name": "item", "description": "10.1016/j.scitotenv.2014.03.141", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.scitotenv.2014.03.141"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-07-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?facets=true&soil_chemical_properties=nitrous+oxide&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?facets=true&soil_chemical_properties=nitrous+oxide&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?facets=true&soil_chemical_properties=nitrous+oxide&", "hreflang": "en-US"}, {"rel": "next", "type": "application/geo+json", "title": "items (next)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?facets=true&soil_chemical_properties=nitrous+oxide&offset=50", "hreflang": "en-US"}], "numberMatched": 190, "numberReturned": 50, "distributedFeatures": [], "timeStamp": "2026-04-04T15:07:32.341408Z"}