{"type": "FeatureCollection", "features": [{"id": "10.1007/s10745-012-9527-y", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:57Z", "type": "Journal Article", "created": "2012-09-17", "title": "Redd Policy Impacts On Indigenous Property Rights Regimes On Palawan Island, The Philippines", "description": "Several Southeast Asian states have been working feverishly to design and implement REDD policy frameworks to fulfil their commitment to global climate change mitigation. In doing so, state agencies will be challenged to design REDD plus policies that value and conserve forest carbon in ways that align with national policies and local priorities for managing forest landscapes defined by complex property rights regimes. However, as with other market-based policies, the expeditious delivery of REDD could bypass critical analysis of potential interactions with national tenure regimes, customary property rights, and local livelihoods. Drawing on the case of Palawan Island\u2014a forested frontier island in the Philippines\u2014we examine how nascent REDD policies can articulate with state sanctioned tenure, customary tenure, and forest uses in changing livelihood contexts. This paper draws on research among Tagbanua and Pala\u2019wan people to illustrate how complex and changing tenure structures, commodity markets and livelihood dynamics may influence how REDD plus interventions affect indigenous customary lands and forest use. We argue that the ability of indigenous forest users to maintain stored carbon and improve livelihoods is contingent upon the \u2018socio-material\u2019 form of carbon\u2014a commodity defined in relation to the resources and social processes of which it is part.", "keywords": ["decentralization", "REDD plus", "0211 other engineering and technologies", "02 engineering and technology", "333", "power", "state", "Relationality", "access", "3312 Sociology and Political Science", "11. Sustainability", "0502 economics and business", "05 social sciences", "1. No poverty", "Forest tenure", "2301 Environmental Science (miscellaneous)", "carbon offsets", "15. Life on land", "Southeast Asia", "land", "governance", "Forest carbon", "13. Climate action", "1201 Arts and Humanities (miscellaneous)", "3314 Anthropology", "resources", "2303 Ecology", "management"]}, "links": [{"href": "https://doi.org/10.1007/s10745-012-9527-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Human%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10745-012-9527-y", "name": "item", "description": "10.1007/s10745-012-9527-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10745-012-9527-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-09-18T00:00:00Z"}}, {"id": "10.1007/s10745-012-9559-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:57Z", "type": "Journal Article", "created": "2012-12-28", "title": "The Last Swiddens Of Sarawak, Malaysia", "description": "Swidden cultivation was observed to be under pressure but still persisting in many areas in Sarawak, Malaysia around 2000\u20132003. Since then rapid development of smallholder oil palm and rubber, continuing urbanization and rural to urban migration appear to have considerably reduced the area under swidden cultivation. With the aim of understanding the extent and impacts of this development, 55 households in three communities that were interviewed in 2002\u20132003 were re-interviewed in 2011. In an area with rapid oil palm development, the households engaged in smallholder oil palm production have experienced considerable improvements in income and wealth whereas the other households have experienced more limited wealth increases or even a decline in income. Many households have decreased or abandoned cultivation of upland rice, which used to be the core of the swidden cultivation system, and the upland soils in the area are now dominated by oil palm. In another area, where no oil palm development has taken place because of a hydroelectric dam, upland rice fields under swidden cultivation have also decreased and new high yielding rubber is now being planted because of the favorable rubber prices. Moreover, tourism has in this area gained further economic importance and overtaken agriculture as the main economic activity of households. The demise of swidden has not yet occurred in Sarawak, but a continued decline has been observed. However, there is a possibility that the new smallholder oil palm and rubber may provide an opportunity for a new type of \u2018productive fallow\u2019 that will allow continued cultivation of upland rice on a small scale.", "keywords": ["2. Zero hunger", "11. Sustainability", "0211 other engineering and technologies", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "02 engineering and technology", "910", "15. Life on land", "GE Environmental Sciences"]}, "links": [{"href": "https://doi.org/10.1007/s10745-012-9559-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Human%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10745-012-9559-3", "name": "item", "description": "10.1007/s10745-012-9559-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10745-012-9559-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-12-29T00:00:00Z"}}, {"id": "10.1007/s10750-012-1017-0", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:14:58Z", "type": "Journal Article", "created": "2012-02-16", "title": "Nutrient Addition Retards Decomposition And C Immobilization In Two Wet Grasslands", "description": "Eutrophication is one of the biggest environmental problems facing wetlands. However, its effect on soil functioning is not yet well understood. We tested the hypothesis that increased nutrient loading into wet grassland ecosystems accelerates soil C and N cycles and decreases microbial immobilization of C and N. Experimental sites were established on two wet grasslands, with either mineral or peaty soils, and fertilized by NPK fertilizer for 3 years. Soils were analyzed for soluble and microbial C and N contents and their transformations, profile of phospholipid fatty acids and number of nirK denitrifiers. Fertilization affected C more than N transformations. Opposite to what was predicted, decomposition was retarded, the soil C cycle was based more on labile C compounds, and the soil was more susceptible to C losses in fertilized versus unfertilized treatments in both soils. Fertilization resulted in lower microbial biomass C and microbial C immobilization and also decreased the activity of lignin-degrading enzymes. Shifts in the composition of the microbial communities led to decreased (1) decomposition of complex organic compounds and (2) immobilization of transformed C. Net nitrification and microbial N immobilization tended to increase in fertilized treatments indicating an acceleration of soil N cycling and losses, but only in the more vulnerable organic soil.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1007/s10750-012-1017-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Hydrobiologia", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10750-012-1017-0", "name": "item", "description": "10.1007/s10750-012-1017-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10750-012-1017-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-02-17T00:00:00Z"}}, {"id": "10.1007/s10745-012-9481-8", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:14:57Z", "type": "Journal Article", "created": "2012-03-30", "title": "From Shifting Cultivation To Cinnamon Agroforestry: Changing Agricultural Practices Among The Serampas In The Kerinci Seblat National Park, Indonesia", "keywords": ["0211 other engineering and technologies", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "02 engineering and technology"]}, "links": [{"href": "https://doi.org/10.1007/s10745-012-9481-8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Human%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10745-012-9481-8", "name": "item", "description": "10.1007/s10745-012-9481-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10745-012-9481-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-03-31T00:00:00Z"}}, {"id": "10.1007/s10745-012-9538-8", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:57Z", "type": "Journal Article", "created": "2012-11-19", "title": "Effects Of Landscape Segregation On Livelihood Vulnerability: Moving From Extensive Shifting Cultivation To Rotational Agriculture And Natural Forests In Northern Laos", "description": "This study investigates four decades of socio-economic and environmental change in a shifting cultivation landscape in the northern uplands of Laos. Historical changes in land cover and land use were analyzed using a chronological series of remote sensing data. Impacts of landscape change on local livelihoods were investigated in seven villages through interviews with various stakeholders. The study reveals that the complex mosaics of agriculture and forest patches observed in the study area have long constituted key assets for the resilience of local livelihood systems in the face of environmental and socio-economic risks. However, over the past 20 years, a process of segregating agricultural and forest spaces has increased the vulnerability of local land users. This process is a direct outcome of policies aimed at increasing national forest cover, eradicating shifting cultivation and fostering the emergence of more intensive and commercial agricultural practices. We argue that agriculture-forest segregation should be buffered in such a way that a diversity of livelihood opportunities and economic development pathways can be maintained.", "keywords": ["http://aims.fao.org/aos/agrovoc/c_195", "550", "F08 - Syst\u00e8mes et modes de culture", "t\u00e9l\u00e9d\u00e9tection", "0211 other engineering and technologies", "02 engineering and technology", "2739 Public Health", "910", "630", "couverture v\u00e9g\u00e9tale", "conservation des for\u00eats", "http://aims.fao.org/aos/agrovoc/c_3062", "for\u00eat", "K01 - Foresterie - Consid\u00e9rations g\u00e9n\u00e9rales", "11. Sustainability", "910 Geography & travel", "intensification", "http://aims.fao.org/aos/agrovoc/c_6498", "2. Zero hunger", "landscape mosaics", "resettlement", "sustainability", "Livelihood vulnerability", "Southeast Asia", "rotation culturale", "330 Economics", "E11 - \u00c9conomie et politique fonci\u00e8res", "moyens d'existence durables", "2307 Health", "Laos", "protection de la for\u00eat", "http://aims.fao.org/aos/agrovoc/c_25409", "http://aims.fao.org/aos/agrovoc/c_4182", "P01 - Conservation de la nature et ressources fonci\u00e8res", "ecology", "3306 Health (social science)", "Multifunctional landscapes", "http://aims.fao.org/aos/agrovoc/c_24420", "culture itin\u00e9rante", "gestion des ressources naturelles", "utilisation des terres", "politique fonci\u00e8re", "http://aims.fao.org/aos/agrovoc/c_12076", "Ecosystem services", "http://aims.fao.org/aos/agrovoc/c_28075", "http://aims.fao.org/aos/agrovoc/c_1374158672853", "Toxicology and Mutagenesis", "Environmental and Occupational Health", "15. Life on land", "shifting cultivation", "http://aims.fao.org/aos/agrovoc/c_7038", "http://aims.fao.org/aos/agrovoc/c_9000157", "http://aims.fao.org/aos/agrovoc/c_9000115", "Land sparing", "Shifting cultivation", "impact sur l'environnement", "ecosystem services", "2303 Ecology", "http://aims.fao.org/aos/agrovoc/c_6662"]}, "links": [{"href": "https://boris.unibe.ch/17755/1/Castella2013_Article_EffectsOfLandscapeSegregationO.pdf"}, {"href": "https://doi.org/10.1007/s10745-012-9538-8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Human%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10745-012-9538-8", "name": "item", "description": "10.1007/s10745-012-9538-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10745-012-9538-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-11-20T00:00:00Z"}}, {"id": "10.1007/s10750-009-9715-y", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:57Z", "type": "Journal Article", "created": "2009-02-13", "title": "Heterotrophic Nitrogen Fixation In Oligotrophic Tropical Marshes: Changes After Phosphorus Addition", "description": "In order to determine the impact of nutrient enrichment on phosphorus (P) limited wetlands, we established experimental P additions in marshes throughout northern Belize. P significantly increased macrophyte primary production, which led to the rapid elimination of cyanobacterial mats. The replacement of cyanobacterial mats by macrophytes constrained autotrophic nitrogen (N) fixation, increased the quantity, and changed the quality of organic matter input to the sediments. We predicted that the activity of sediment heterotrophic N fixers will be impacted by these alterations in carbon input. We used the acetylene reduction technique to measure potential (glucose amended) nitrogenase activity (NA) in sediments from controls and treatment plots that have been P enriched for four years and dominated either by Eleocharis cellulosa, or Typha domingensis for two years. NA in P-enriched plots was 2\u20133 orders of magnitude higher than NA in controls. NA was positively correlated with the soil reactive P, both total organic and microbial carbon, live root biomass, and total phospholipid fatty acids (PLFA) as an indicator of active microbial biomass. It was negatively correlated with the concentration of ammonium-N. Path analysis revealed that the indirect effect of P on NA through the root biomass was more important than the direct effect of P. NA of the upper sediment layer was consistently higher in Eleocharis than in Typha dominated plots, despite the higher litter input by Typha. We feel that the higher levels of lignin and phenolics occurring in Typha litter, relative to Eleocharis, constrained NA in Typha plots.", "keywords": ["0106 biological sciences", "Freshwater & Marine Ecology", "Salinity", "Ecology", "Life Sciences", "Phosphorus", "04 agricultural and veterinary sciences", "Aquatic Science", "15. Life on land", "Cyanobacteria", "Pollution", "01 natural sciences", "6. Clean water", "Environmental Science(all)", "13. Climate action", "Heterotrophic nitrogen fixation", "0401 agriculture", " forestry", " and fisheries", "Zoology", "Typha", "Eleocharis"], "contacts": [{"organization": "\u010cern\u00e1, Barbora, Rejm\u00e1nkov\u00e1, Eli\u0161ka, Snyder, Jenise M., \u0160antr\u016f\u010dkov\u00e1, Hana,", "roles": ["creator"]}]}, "links": [{"href": "https://escholarship.org/content/qt0xk5x7sm/qt0xk5x7sm.pdf"}, {"href": "https://doi.org/10.1007/s10750-009-9715-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Hydrobiologia", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10750-009-9715-y", "name": "item", "description": "10.1007/s10750-009-9715-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10750-009-9715-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-02-13T00:00:00Z"}}, {"id": "10.1007/s11012-015-0125-0", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:14:58Z", "type": "Journal Article", "created": "2015-02-17", "title": "On torsional surface wave in dry sandy crust laid over an inhomogeneous half space", "description": "zbMATH Open Web Interface contents unavailable due to conflicting licenses.", "keywords": ["inhomogeneity", "0203 mechanical engineering", "sandy parameter", "initial stress", "8. Economic growth", "0211 other engineering and technologies", "Surface waves in solid mechanics", "torsional surface wave", "WKB approximation", "02 engineering and technology"], "contacts": [{"organization": "Chattaraj, Ranjan, Samal, Sapan Kumar, Debasis, Sourav,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s11012-015-0125-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Meccanica", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11012-015-0125-0", "name": "item", "description": "10.1007/s11012-015-0125-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11012-015-0125-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-02-17T00:00:00Z"}}, {"id": "10.1007/s10886-005-1340-2", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:58Z", "type": "Journal Article", "created": "2005-03-04", "title": "Effects Of Elevated Co2 On Foliar Quality And Herbivore Damage In A Scrub Oak Ecosystem", "description": "Atmospheric CO2 concentrations have increased exponentially over the last century and continuing increases are expected to have significant effects on ecosystems. We investigated the interactions among atmospheric CO2, foliar quality, and herbivory within a scrub oak community at the Kennedy Space Center, Florida. Sixteen plots of open-top chambers were followed; eight of which were exposed to ambient levels of CO2 (350 ppm), and eight of which were exposed to elevated levels of CO2 (700 ppm). We focused on three oak species, Quercus geminata, Quercus myrtifolia, Quercus chapmanii, and one nitrogen fixing legume, Galactia elliottii. There were declines in overall nitrogen and increases in C:N ratios under elevated CO2. Total carbon, phenolics (condensed tannins, hydrolyzable tannins, total phenolics) and fiber (cellulose, hemicellulose, lignin) did not change under elevated CO2 across plant species. Plant species differed in their relative foliar chemistries over time, however, the only consistent differences were higher nitrogen concentrations and lower C:N ratios in the nitrogen fixer when compared to the oak species. Under elevated CO2, damage by herbivores decreased for four of the six insect groups investigated. The overall declines in both foliar quality and herbivory under elevated CO2 treatments suggest that damage to plants may decline as atmospheric CO2 levels continue to rise.", "keywords": ["0106 biological sciences", "Time Factors", "Atmosphere", "Nitrogen", "Carbon Dioxide", "15. Life on land", "01 natural sciences", "Carbon", "Plant Leaves", "Quercus", "Species Specificity", "13. Climate action", "Florida", "Ecosystem"]}, "links": [{"href": "https://doi.org/10.1007/s10886-005-1340-2"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Chemical%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10886-005-1340-2", "name": "item", "description": "10.1007/s10886-005-1340-2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10886-005-1340-2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-02-01T00:00:00Z"}}, {"id": "10.1007/s10980-013-9956-z", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-03T16:14:58Z", "type": "Journal Article", "created": "2013-11-07", "title": "Erosion Regulation As A Function Of Human Disturbances To Vegetation Cover: A Conceptual Model", "description": "Human-induced land cover changes are causing important effects on the ecological services rendered by mountain ecosystems, and the number of case-studies of the impact of humans on soil erosion and sediment yield has mounted rapidly. In this paper, we present a conceptual model that allows evaluating overall changes in erosion regulation after human disturbances. The basic idea behind this model is that soil erosion mechanisms are independent of human impact, but that the frequency\u2013magnitude distributions of erosion rates change as a response to human disturbances. Pre-disturbance (or natural) erosion rates are derived from in situ produced 10Be concentrations in river sediment, while post-disturbance (or modern) erosion rates are derived from sedimentation rates in small catchments. In its simplicity, the model uses vegetation cover change as a proxy of human disturbance. The erosion regulation model is here applied in two mountainous regions with different vegetation dynamics, climatic and geological settings: the Austro Ecuatoriano, and the Spanish Betic Cordillera. Natural erosion benchmarks are necessary to assess human-induced changes in erosion rates. While the Spanish Betic Cordillera is commonly characterized as a degraded landscape, there is no significant difference between modern catchment-wide erosion and long-term denudation rates. The opposite is true for the Austro Ecuatoriano where the share of natural erosion in the total modern erosion rate is minimal for most disturbed sites. When pooling pre- and post-disturbance erosion data from both regions, the data suggest that the human acceleration of erosion is related to vegetation disturbances. The empirical regression model predicts human acceleration of erosion, here defined as the ratio of post-disturbance to pre-disturbance (or natural benchmark) erosion rate, as an exponential function of vegetation disturbance. This suggests that the sensitivity to human-accelerated erosion would be ecosystem dependent, and related to the potential vegetation cover disturbances as a result of human impact. It may therefore be expected that the potential for erosion regulation is larger in well-vegetated ecosystem where strong differences may exist in vegetation cover between human disturbed and undisturbed or restored sites.", "keywords": ["13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1007/s10980-013-9956-z"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Landscape%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10980-013-9956-z", "name": "item", "description": "10.1007/s10980-013-9956-z", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10980-013-9956-z"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2013-11-08T00:00:00Z"}}, {"id": "10.1007/s10994-018-5744-y", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:58Z", "type": "Journal Article", "created": "2018-07-11", "title": "Ensembles for multi-target regression with random output selections", "description": "We address the task of multi-target regression, where we generate global models that simultaneously predict multiple continuous variables. We use ensembles of generalized decision trees, called predictive clustering trees (PCTs), in particular bagging and random forests (RF) of PCTs and extremely randomized PCTs (extra PCTs). We add another dimension of randomization to these ensemble methods by learning individual base models that consider random subsets of target variables, while leaving the input space randomizations (in RF PCTs and extra PCTs) intact. Moreover, we propose a new ensemble prediction aggregation function, where the final ensemble prediction for a given target is influenced only by those base models that considered it during learning. An extensive experimental evaluation on a range of benchmark datasets has been conducted, where the extended ensemble methods were compared to the original ensemble methods, individual multi-target regression trees, and ensembles of single-target regression trees in terms of predictive performance, running times and model sizes. The results show that the proposed ensemble extension can yield better predictive performance, reduce learning time or both, without a considerable change in model size. The newly proposed aggregation function gives best results when used with extremely randomized PCTs. We also include a comparison with three competing methods, namely random linear target combinations and two variants of random projections.", "keywords": ["Ensemble methods", "Predictive clustering trees", "0202 electrical engineering", " electronic engineering", " information engineering", "Structured outputs", "02 engineering and technology", "Multi-target regression", "Output space decomposition"]}, "links": [{"href": "https://doi.org/10.1007/s10994-018-5744-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Machine%20Learning", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10994-018-5744-y", "name": "item", "description": "10.1007/s10994-018-5744-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10994-018-5744-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-07-11T00:00:00Z"}}, {"id": "10.1890/10-2076.1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:21:23Z", "type": "Journal Article", "created": "2011-04-29", "title": "No Evidence That Chronic Nitrogen Additions Increase Photosynthesis In Mature Sugar Maple Forests", "description": "Atmospheric nitrogen (N) deposition can increase forest growth. Because N deposition commonly increases foliar N concentrations, it is thought that this increase in forest growth is a consequence of enhanced leaf-level photosynthesis. However, tests of this mechanism have been infrequent, and increases in photosynthesis have not been consistently observed in mature forests subject to chronic N deposition. In four mature northern hardwood forests in the north-central United States, chronic N additions (30 kg N ha(-1) yr(-1) as NaNO3 for 14 years) have increased aboveground growth but have not affected canopy leaf biomass or leaf area index. In order to understand the mechanism behind the increases in growth, we hypothesized that the NO3(-) additions increased foliar N concentrations and leaf-level photosynthesis in the dominant species in these forests (sugar maple, Acer saccharum). The NO3(-) additions significantly increased foliar N. However, there was no significant difference between the ambient and +NO3(-) treatments in two seasons (2006-2007) of instantaneous measurements of photosynthesis from either canopy towers or excised branches. In measurements on excised branches, photosynthetic nitrogen use efficiency (micromol CO2 s(-1) g(-1) N) was significantly decreased (-13%) by NO3(-) additions. Furthermore, we found no consistent NO3(-) effect across all sites in either current foliage or leaf litter collected annually throughout the study (1993-2007) and analyzed for delta 13C and delta 18O, isotopes that can be used together to integrate changes in photosynthesis over time. We observed a small but significant NO3(-) effect on the average area and mass of individual leaves from the excised branches, but these differences varied by site and were countered by changes in leaf number. These photosynthesis and leaf area data together suggest that NO3(-) additions have not stimulated photosynthesis. There is no evidence that nutrient deficiencies have developed at these sites, so unlike other studies of photosynthesis in N-saturated forests, we cannot attribute the lack of a stimulation of photosynthesis to nutrient limitations. Rather than increases in C assimilation, the observed increases in aboveground growth at our study sites are more likely due to shifts in C allocation.", "keywords": ["0106 biological sciences", "Carbon Isotopes", "Michigan", "Nitrates", "Time Factors", "Nitrogen", "Acer", "04 agricultural and veterinary sciences", "Oxygen Isotopes", "15. Life on land", "01 natural sciences", "Carbon", "Trees", "Oxygen", "Plant Leaves", "0401 agriculture", " forestry", " and fisheries", "Photosynthesis", "Fertilizers"]}, "links": [{"href": "https://doi.org/10.1890/10-2076.1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ecological%20Applications", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1890/10-2076.1", "name": "item", "description": "10.1890/10-2076.1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1890/10-2076.1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-10-01T00:00:00Z"}}, {"id": "10.1007/s10980-016-0447-x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:58Z", "type": "Journal Article", "created": "2016-10-04", "title": "Bending The Carbon Curve: Fire Management For Carbon Resilience Under Climate Change", "description": "Forest landscapes are increasingly managed for fire resilience, particularly in the western US which has recently experienced drought and widespread, high-severity wildfires. Fuel reduction treatments have been effective where fires coincide with treated areas. Fuel treatments also have the potential to reduce drought-mortality if tree density is uncharacteristically\u00a0high, and to increase long-term carbon storage by reducing high-severity fire probability. Assess whether fuel treatments reduce fire intensity and spread\u00a0and increase carbon storage under climate change. We used a simulation modeling approach that couples a landscape model of forest disturbance and succession with an ecosystem model of carbon dynamics (Century), to quantify the interacting effects of climate change, fuel treatments and wildfire for carbon storage potential in a mixed-conifer forest in the western USA. Our results suggest that fuel treatments have the potential to \u2018bend the C curve\u2019, maintaining carbon resilience despite climate change and climate-related changes to the fire regime. Simulated fuel treatments resulted in reduced fire spread and severity. There was partial compensation of C lost during fuel treatments with increased growth of residual stock due to greater available soil water, as well as a shift in species composition to more drought- and fire-tolerant Pinus jeffreyi at the expense of shade-tolerant, fire-susceptible Abies concolor. Forest resilience to global change can be achieved through management that reduces drought stress and supports the establishment and dominance of tree species that are more fire- and drought-resistant, however, achieving a net C gain from fuel treatments may take decades.", "keywords": ["Carbon sequestration", "0106 biological sciences", "Environmental Indicators and Impact Assessment", "Forest fires -- West (U.S.) -- Prevention and control", "Environmental Studies", "Natural Resources Management and Policy", "Forest fires -- Effect of climate change on", "15. Life on land", "Forest fires -- Simulation modelling", "01 natural sciences", "6. Clean water", "Wildfires -- Lake Tahoe Basin", "13. Climate action", "Forest management -- Environmental aspects", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1007/s10980-016-0447-x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Landscape%20Ecology", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10980-016-0447-x", "name": "item", "description": "10.1007/s10980-016-0447-x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10980-016-0447-x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-10-04T00:00:00Z"}}, {"id": "10.1007/s10994-020-05918-z", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:58Z", "type": "Journal Article", "created": "2020-10-28", "title": "Incremental predictive clustering trees for online semi-supervised multi-target regression", "description": "Abstract

In many application settings, labeling data examples is a costly endeavor, while unlabeled examples are abundant and cheap to produce. Labeling examples can be particularly problematic in an online setting, where there can be arbitrarily many examples that arrive at high frequencies. It is also problematic when we need to predict complex values (e.g., multiple real values), a task that has started receiving considerable attention, but mostly in the batch setting. In this paper, we propose a method for online semi-supervised multi-target regression. It is based on incremental trees for multi-target regression and the predictive clustering framework. Furthermore, it utilizes unlabeled examples to improve its predictive performance as compared to using just the labeled examples. We compare the proposed iSOUP-PCT method with supervised tree methods, which do not use unlabeled examples, and to an oracle method, which uses unlabeled examples as though they were labeled. Additionally, we compare the proposed method to the available state-of-the-art methods. The method achieves good predictive performance on account of increased consumption of computational resources as compared to its supervised variant. The proposed method also beats the state-of-the-art in the case of very few labeled examples in terms of performance, while achieving comparable performance when the labeled examples are more common.International initiatives are emphasizing the capture of atmospheric CO2 in soil organic C (SOC) to reduce the climatic footprint from agroecosystems. One approach to quantify the contribution of management practices towards that goal is through analysis of long-term experiments (LTEs). Our objectives were to analyze knowledge gained in literature reviews on SOC changes in LTEs, to evaluate the results regarding interactions with pedo-climatological factors, and to discuss disparities among reviews in data selection criteria. We summarized mean response ratios (RRs) and stock change rate (SCR) effect size indices from twenty reviews using paired comparisons (N). The highest RRs were found with manure applications (30%, N\uffe2\uff80\uff89=\uffe2\uff80\uff89418), followed by aboveground crop residue retention and the use of cover crops (9\uffe2\uff80\uff9310%, N\uffe2\uff80\uff89=\uffe2\uff80\uff89995 and 129), while the effect of nitrogen fertilization was lowest (6%, N\uffe2\uff80\uff89=\uffe2\uff80\uff89846). SCR for nitrogen fertilization exceeded that for aboveground crop residue retention (233 versus 117\uffc2\uffa0kg\uffc2\uffa0C\uffc2\uffa0ha\uffe2\uff88\uff921\uffc2\uffa0year\uffe2\uff88\uff921, N\uffe2\uff80\uff89=\uffe2\uff80\uff89183 and 279) and was highest for manure applications and cover crops (409 and 331\uffc2\uffa0kg\uffc2\uffa0C\uffc2\uffa0ha\uffe2\uff88\uff921\uffc2\uffa0year\uffe2\uff88\uff921, N\uffe2\uff80\uff89=\uffe2\uff80\uff89217 and 176). When data allows, we recommend calculating both RR and SCR because it improves the interpretation. Our synthesis shows that results are not always consistent among reviews and that interaction with texture and climate remain inconclusive. Selection criteria for study durations are highly variable, resulting in irregular conclusions for the effect of time on changes in SOC. We also discuss the relationships of SOC changes with yield and cropping systems, as well as conceptual problems when scaling-up results obtained from field studies to regional levels.= 20 years) application of fertilizers and straw return enhances soil carbon storage: a meta-analysis", "description": "Increasing soil carbon (C) storage is crucial to addressing climate change and ensuring food security. The C sequestration potential of the world\u2019s cropland soil is 0.4\u20130.8\u00a0Pg\u00a0soil\u00a0C\u00a0year\u22121, which may be achieved through the adoption of recommended management practices (RMPs), including fertilizer management. This study aimed to quantitatively evaluate the influence of long-term application of different fertilizers and straw retention on soil organic carbon (SOC) storage, to compare the calculated response ratios with Intergovernmental Panel on Climate Change (IPCC)-recommended default relative stock change factors, and to propose recommendations for enhancing SOC sequestration. The meta-analysis indicated that the long-term application of chemical fertilizers (CF), organic fertilizers (OF), combined chemical and organic fertilizers (CFOF), and straw return (SR) significantly enhanced the SOC storage. Response ratios varied significantly (p\u00a0<\u00a00.05) across different fertilization measures and climatic zones, and was sensitive to the initial SOC content. The mean response ratio was 0.94 for no fertilizer (NF), 1.08 for CF, 1.48 for OF, 1.38 for CFOF, and 1.28 for SR. When IPCC default values for response ratios were applied, SOC storage with OF and CFOF treatments in warm temperate regions with a dry climate was underestimated by 26%, and in the cool temperate region with a moist climate was overestimated by 25% (p\u00a0<\u00a00.05). Analysis showed that sustained application of organic fertilizers and straw return could be a beneficial measures to mitigate climate change and ensure food security in China. Our findings highlight the importance of deriving SOC stock change factors for a detailed classification of cropland by fertilizer management, climate, and soil types in order to more accurately reflect the effects of policy measures.", "keywords": ["2. Zero hunger", "13. Climate action", "11. Sustainability", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "12. Responsible consumption"], "contacts": [{"organization": "Yunfan Wan, Shuo Liu, Muhammad Ahmed Waqas, Yue Li, Xiaobo Qin, Andreas Wilkes, Xiaoxia Zhou, Qingzhu Gao, Shengwei Shi, Jianling Li,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s11027-017-9751-2"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Mitigation%20and%20Adaptation%20Strategies%20for%20Global%20Change", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11027-017-9751-2", "name": "item", "description": "10.1007/s11027-017-9751-2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11027-017-9751-2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-06-30T00:00:00Z"}}, {"id": "10.1007/s11044-018-09644-2", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:59Z", "type": "Journal Article", "created": "2018-10-19", "title": "A modal derivatives enhanced Rubin substructuring method for geometrically nonlinear multibody systems", "description": "Open AccessISSN:1384-5640", "keywords": ["Geometric nonlinearity; Floating frame of reference; Modal derivatives; Rubin substructuring; Mean-axis frame", "Geometric nonlinearity", "Mean-axis frame", "518", "0211 other engineering and technologies", "Rubin substructuring", "Floating frame of reference", "02 engineering and technology", "Article", "Modal derivatives", "0201 civil engineering"]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1007/s11044-018-09644-2.pdf"}, {"href": "https://doi.org/10.1007/s11044-018-09644-2"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Multibody%20System%20Dynamics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11044-018-09644-2", "name": "item", "description": "10.1007/s11044-018-09644-2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11044-018-09644-2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-10-19T00:00:00Z"}}, {"id": "10.1007/s11099-016-0672-1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:59Z", "type": "Journal Article", "created": "2016-11-07", "title": "Soil Water Content And Photosynthetic Capacity Of Spring Wheat As Affected By Soil Application Of Nitrogen-Enriched Biochar In A Semiarid Environment", "description": "A field trial was conducted to determine the effect of nitrogen-enriched biochar on soil water content, plant\u2019s photosynthetic parameters, and grain yield of spring wheat at the Dingxi Experimental Station during the 2014 and 2015 cropping seasons. Results showed that biochar applied with nitrogen fertilizer at a rate of 50 kg ha\u20131 of N (BN50) increased soil water content in the 0\u201330 cm depth range by approximately 40, 32, and 53% on average at anthesis, milking, and maturity, respectively, compared with zero-amendment (CN0). Stomatal conductance and net photosynthetic rate after the BN50 treatment increased by approximately 40 to 50% compared to CN0. Soil water content and photosynthetic traits also increased in other treatments using straw plus nitrogen fertilizer, but to lesser extent than that of BN50. Grain yields were highest (1905 and 2133 kg ha\u20131 in 2014 and 2015, respectively) under BN50. From this, biochar appears to have a potential for its use with N-fertilizer as a cost-effective amendment for crop production in semiarid environments.", "keywords": ["2. Zero hunger", "crop residues", "chemical fertilizer", "0401 agriculture", " forestry", " and fisheries", "biochar", "gas exchange", "04 agricultural and veterinary sciences", "15. Life on land", "crop productivity", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1007/s11099-016-0672-1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Photosynthetica", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11099-016-0672-1", "name": "item", "description": "10.1007/s11099-016-0672-1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11099-016-0672-1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2017-09-01T00:00:00Z"}}, {"id": "10.1007/s11104-004-0234-3", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:14:59Z", "type": "Journal Article", "created": "2005-05-30", "title": "Soil Co2 Efflux And Fungal And Bacterial Biomass In A Plantation And A Secondary Forest In Wet Tropics In Puerto Rico", "description": "We examined the effects of root and litter exclusion on the rate of soil CO2 efflux and microbial biomass using trenching and tent separation techniques in a secondary forest (SF) and a pine (Pinus caribaea Morelet) plantation in the Luquillo Experimental Forest in Puerto Rico. Soil surface CO2 efflux was measured using the alkali trap method at 12 randomly-distributed locations in each treatment (control, root exclusion, litter exclusion, and both root and litter exclusion) in the plantation and the SF, respectively. We measured soil CO2 efflux every two months and collected soil samples at each sampling location in different seasons to determine microbial biomass from August 1996 to July 1997. We found that soil CO2 efflux was significantly reduced in the litter and root exclusion plots (7-year litter and/or root exclusion) in both the secondary forest and the pine plantation compared with the control. The reduction of soil CO2 efflux was 35.6% greater in the root exclusion plots than in the litter exclusion plots in the plantation, whereas a reversed pattern was found in the secondary forest. Microbial biomass was also reduced during the litter and root exclusion period. In the root exclusion plots, total fungal biomass averaged 31.4% and 65.2% lower than the control plots in the plantation and the secondary forest, respectively, while the total bacterial biomass was 24% and 8.3% lower than the control plots in the plantation and the secondary forest, respectively. In the litter exclusion treatment, total fungal biomass averaged 69.2% and 69.7% lower than the control plots in the plantation and the secondary forest, respectively, while the total bacterial biomass was 48% and 50.1% lower than the control plots in the plantation and the secondary forest, respectively. Soil CO2 efflux was positively correlated with both fungal and bacterial biomass in both the plantation the secondary forest. The correlation between soil CO2 efflux and active fungal biomass was significantly higher in the plantation than in the secondary forest. However, the correlation between the soil CO2 efflux and both the active and total bacterial biomass was significantly higher in the secondary forest than in the plantation in the day season. In addition, we found soil CO2 efflux was highly related to the strong interactions among root, fungal and bacterial biomass by multiple regression analysis (R2 > 0.61, P < 0.05). Our results suggest that carbon input from aboveground litterfall and roots (root litter and exudates) is critical to the soil microbial community and ecosystem carbon cycling in the wet tropical forests.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1007/s11104-004-0234-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-004-0234-3", "name": "item", "description": "10.1007/s11104-004-0234-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-004-0234-3"}, {"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": "10.1007/s11104-006-9041-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2006-08-14", "title": "Integrated Pearl Millet Management In The Sahel: Effects Of Legume Rotation And Fallow Management On Productivity And Striga Hermonthica Infestation", "description": "Increasing population density and food needs in the Sahel are major drivers behind the conversion of land under natural vegetation to arable land. Intensification of agriculture is a necessity for farmers to produce enough food. As manure is scarce and fertilizers expensive, this study looks into the potential role of cowpea (Vigna unguiculata L.) and short duration fallow in maintaining soil fertility and productivity and in reducing the major weed problem Striga hermonthica (Del.) Benth. The research was carried out \u2018on-farm\u2019 in a traditional millet (Pennisetum glaucum (L.) R.Br.) growing area in the Malian Sahel, near Bankass. The four year experiment combined 0, 2, 5, and 7\u00a0years of preceding fallow with (i) 4\u00a0years of millet, (ii) 1\u00a0year of cowpea\u00a0+\u00a03\u00a0years of millet, and (iii) 1\u00a0year of cowpea\u00a0+\u00a03\u00a0years of millet/cowpea inter-cropping. Total millet production (4\u00a0years) was 1440\u00a0kg\u00a0ha\u22121 for all systems with 2, 5 or 7\u00a0years of preceding fallow against 1180\u00a0kg\u00a0ha\u22121 for systems without fallow. Cowpea grain production showed no significant differences between fallow treatments. Over 4\u00a0years, all cropping systems produced similar total amounts of millet grain, implying that the millet \u2018lost\u2019 during the year with a pure cowpea crop in treatments (ii) and (iii) was compensated within three years, while the cowpea grain production was an additional benefit. Such compensation was however not observed for increasing number of preceding fallow years, showing that there is no additional production benefit in 5\u20137\u00a0years of fallow as compared to 2\u00a0years. The soil organic carbon content decreased more slowly in treatments with a cowpea pure crop in 1998 than in the millet pure crop, while overall higher contents were observed after preceding fallow also after four years of cropping. Striga hermonthica infestation decreased linearly with duration of preceding fallow, but also after seven years of fallow and one year of cowpea the hemi-parasitic weed still re-appeared. Overall the intensification through a cowpea pure crop and cowpea intercrop in these millet-based systems improved production and a number of other characteristics of the system, making it more viable.", "keywords": ["nutrient flows", "2. Zero hunger", "0106 biological sciences", "NRS", "soil fertility", "continuous cultivation", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "nitrogen", "semiarid tropics", "cowpea", "ADLIB-ART-2493", "systems", "0401 agriculture", " forestry", " and fisheries", "sorghum", "west-africa", "crop productivity"]}, "links": [{"href": "https://doi.org/10.1007/s11104-006-9041-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-006-9041-3", "name": "item", "description": "10.1007/s11104-006-9041-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-006-9041-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-08-01T00:00:00Z"}}, {"id": "10.1007/s11104-006-9077-4", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2006-08-30", "title": "Effects Of Forest Management On Soil N Cycling In Beech Forests Stocking On Calcareous Soils", "description": "The effects of forest management (thinning) on gross and net N conversion, the balance of inorganic N production and consumption, inorganic N concentrations and on soil microbial biomass in the Ah layer were studied in situ during eight intensive field measuring campaigns in the years 2002\u20132004 at three beech (Fagus sylvatica L.) forest sites. At all sites adjacent thinning plots (\u201cT\u201d) and untreated control plots (\u201cC\u201d) were established. Since the sites are characterized either by cool-moist microclimate (NE site and NW site) or by warm-dry microclimate (SW site) and thinning took place in the year 1999 at the NE and SW sites and in the year 2003 at the NW site the experimental design allowed to evaluate (1) short-term effects (years 1\u20132) of thinning at the NW site and (2) medium-term effects (years 4\u20136) of thinning under different microclimate at the SW and NE site. Microbial biomass N was consistently higher at the thinning plots of all sites during most of the field campaigns and was overall significantly higher at the SWT and NWT plots as compared to the corresponding untreated control plots. The size of the microbial biomass N pool was found to correlate positively with both gross ammonification and gross nitrification as well as with extractable soil NO 3 \u2212 concentrations. At the SW site neither gross ammonification, gross nitrification, gross ammonium (NH 4 + ) immobilization and gross nitrate (NO 3 \u2212 ) immobilization nor net ammonification, net nitrification and extractable NH 4 + and NO 3 \u2212 contents were significantly different between control and thinning plot. At the NET plot lower gross ammonification and gross NH 4 + immobilization in conjunction with constant nitrification rates coincided with higher net nitrification and significantly higher extractable NO 3 \u2212 concentrations. Thus, the medium-term effects of thinning varied with different microclimate. The most striking thinning effects were found at the newly thinned NW site, where gross ammonification and gross NH 4 + immobilization were dramatically higher immediately after thinning. However, they subsequently tended to decrease in favor of gross nitrification, which was significantly higher at the NWT plot as compared to\u2423the\u2423NWC plot during all field campaigns after\u2423thinning except for April 2004. This increase\u2423in\u2423gross nitrification at the NWT plot (1.73\u00a0mg\u00a0N\u00a0kg\u22121\u00a0sdw\u00a0day\u22121 versus 0.48\u00a0mg\u00a0N\u00a0kg\u22121 sdw\u00a0day\u22121 at the NWC plot) coincided with significantly higher extractable NO 3 \u2212 concentrations (4.59\u00a0mg\u00a0N\u00a0kg\u22121 sdw at the NWT plot versus 0.96\u00a0mg\u00a0N\u00a0kg\u22121\u00a0sdw at the NWC plot). Pronounced differences in relative N retention (the ratio of gross NH 4 + immobilization + gross NO 3 \u2212 immobilization to gross ammonification + gross nitrification) were found across the six research plots investigated and could be positively correlated to the soil C/N ratio (R\u00a0=\u00a00.94; p\u00a0=\u00a00.005). In sum, the results obtained in this study show that (1) thinning can lead to a shift in the balance of microbial inorganic N production and consumption causing a clear decrease in the N retention capacity in the monitored forest soils especially in the first two years after thinning, (2)\u2423the resistance of the investigated forest ecosystems to disturbances of N cycling by thinning may vary with different soil C contents and C/N ratios, e. g. caused by differences in microclimate, (3) thinning effects tend to decline with the growth of understorey vegetation in the years 4\u20136 after thinning.", "keywords": ["Earth sciences", "info:eu-repo/classification/ddc/550", "550", "ddc:550", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1007/s11104-006-9077-4"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-006-9077-4", "name": "item", "description": "10.1007/s11104-006-9077-4", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-006-9077-4"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-08-31T00:00:00Z"}}, {"id": "10.1007/s11056-011-9295-3", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:14:59Z", "type": "Journal Article", "created": "2011-12-03", "title": "Effects Of Drought And Nitrogen Addition On Photosynthetic Characteristics And Resource Allocation Of Abies Fabri Seedlings In Eastern Tibetan Plateau", "description": "Abies fabri (Mast.) Craib is an endemic and dominant species in typical sub-alpine dark coniferous forests distributed in mountainous regions of the eastern Tibetan Plateau, China. We investigated the ecophysiological responses of A. fabri seedlings to short-term artificially-applied drought, nitrogen addition alone, and the combination of these treatments. Drought was created by excluding natural precipitation with an automatically controlled plastic roof that covered the seedlings. Nitrogen fertilization was applied weekly by spraying over seedlings with ammonium nitrate solution. Experiment results showed that drought caused a reduction in photosynthetic nitrogen use efficiency and leaf mass per area. Nitrogen addition enhanced photosynthetic performance by increasing net photosynthetic rate. In the drought plots, nitrogen addition increased net photosynthetic rate and instantaneous water use efficiency. These results showed that applied nitrogen improved plant water use efficiency and N accumulation in plant organs under drought conditions. Especially under drought conditions more N was concentrated into needles by applied nitrogen as compared with other organs. In conclusion, our results indicated that the combination of nitrogen addition and drought may result in positive effects on A. fabri seedlings in the short-term.", "keywords": ["0106 biological sciences", "2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1007/s11056-011-9295-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/New%20Forests", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11056-011-9295-3", "name": "item", "description": "10.1007/s11056-011-9295-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11056-011-9295-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2011-12-03T00:00:00Z"}}, {"id": "10.1007/s11104-004-0230-7", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:14:59Z", "type": "Journal Article", "created": "2005-05-30", "title": "Root Production And Tissue Quality In A Shortgrass Steppe Exposed To Elevated Co2: Using A New Ingrowth Method", "description": "A modified root ingrowth method was developed to minimize destructive sampling in experiments with limited space, and used to estimate belowground net primary production and root tissue quality in a native semiarid grassland exposed to elevated CO2 for five years. Increases in root production of over 60% were observed with elevated CO2 during years of intermediate levels of precipitation, with smaller effects in a very wet year and no effects in a very dry year. Aboveground to belowground production ratios, and the depth distribution of root production, did not differ between ambient and elevated CO2 treatments. Root soluble concentrations increased an average of 11% and lignin concentrations decreased an average of 6% with elevated CO2, while nitrogen concentrations decreased an average of 21%. However, most tissue quality responses to CO2 varied greatly among years, and C:N ratios were higher in only one year (22 ambient vs. 33 elevated). Among years, root nitrogen concentrations declined with increasing aboveground plant nitrogen yield, and increased over the study period. Estimates of root production by the ingrowth donut method were much lower than previous estimates in the shortgrass steppe based on 14C decay. We discuss reasons why all ingrowth methods will always result in relative rather than absolute estimates of root production.", "keywords": ["0106 biological sciences", "2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences"], "contacts": [{"organization": "Jim A. Nelson, Daniel R. LeCain, Jennifer Y. King, Jack A. Morgan, A. R. Mosier, A. R. Mosier, Daniel G. Milchunas,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s11104-004-0230-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-004-0230-7", "name": "item", "description": "10.1007/s11104-004-0230-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-004-0230-7"}, {"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": "10.1007/s11104-004-0490-2", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:59Z", "type": "Journal Article", "created": "2005-05-31", "title": "How Does Nitrogen Availability Alter Rhizodeposition In Lolium Multiflorum Lam. During Vegetative Growth?", "description": "The objective of this work was to determine if the impact of nitrogen (N) on the release of organic carbon (C) into the soil by roots (rhizodeposition) correlated with the effect of this nutrient on some variables of plant growth. Lolium multiflorum Lam. was grown at two levels of N supply, either in sterile sand percolated with nutrient solution or in non-sterile soil. The axenic sand systems allowed continuous quantification of rhizodeposition and accurate analysis of root morphology whilst the soil microcosms allowed the study of 14C labelled C flows in physico-chemical and biological conditions relevant to natural soils. In the axenic sand cultures, enhanced N supply strongly increased the plant biomass, the plant N content and the shoot to root ratio. N supply altered the root morphology by increasing the root surface area and the density of apices, both being significantly positively correlated with the rate of organic C release by plant roots before sampling. This observation is consistent with the production of mucilage by root tips and with mechanisms of root exudation reported previously in the literature, i.e. the passive diffusion of roots solutes along the root with increased rate behind the root apex. We proposed a model of root net exudation, based on the number of root apices and on root soluble C that explained 60% of the variability in the rate of C release from roots at harvest. The effects of N on plant growth were less marked in soil, probably related to the relatively high supply of N from non-fertiliser soil-sources. N fertilization increased the shoot N concentration of the plants and the shoot to root ratio. Increased N supply decreased the partitioning of 14C to roots. In parallel, N fertilisation increased the root soluble 14C and the 14C recovered in the soil per unit of root biomass, suggesting a stimulation of root exudation by N supply. However, due to the high concentration of N in our unfertilised plants, this stimulation was assumed to be very weak because no significant effect of N was observed on the microbial C and on the bacterial abundance in the rhizosphere. Considering the difficulties in evaluating rhizodeposition in non sterile soil, it is suggested that the root soluble C, the root surface area and the root apex density are additional relevant variables that should be useful to measure along with the variables that are commonly determined when investigating how plant functioning impacts on the release of C by roots (i.e soil C, C of the microbial biomass, rhizosphere respiration).", "keywords": ["580", "2. Zero hunger", "0106 biological sciences", "exudation", "C-14 pulse labelling", "04 agricultural and veterinary sciences", "N", "15. Life on land", "01 natural sciences", "[SDV.BV]Life Sciences [q-bio]/Vegetal Biology", "rhizodeposition", "0401 agriculture", " forestry", " and fisheries", "[SDV.BV] Life Sciences [q-bio]/Vegetal Biology", "root morphology", "root soluble C"]}, "links": [{"href": "https://doi.org/10.1007/s11104-004-0490-2"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-004-0490-2", "name": "item", "description": "10.1007/s11104-004-0490-2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-004-0490-2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-02-01T00:00:00Z"}}, {"id": "10.1007/s11104-004-1160-0", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-03T16:14:59Z", "type": "Journal Article", "created": "2005-05-30", "title": "Hydrogel Substrate Amendment Alleviates Drought Effects On Young Citrus Plants", "description": "Water deficits affect citrus physiology, yield, fruit size and quality. Citrus can respond to drought stress conditions through endogenous hormonal regulation of water status and leaf abscission. In this work, we assayed the efficiency of an amendment to soilless media in delaying the drought stress effect in young citrus seedlings and trees. Substrate amendment promoted plant survival of citrus seedlings subjected to several cycles of drought stress and rehydration. In budded trees, the amendment increased substrate water content, leaf water potential, leaf number, root biomass, CO2 assimilation and stomatal conductance over that of control plants growing in non-amended substrates. We conclude that the substrate amendment reduced the damaging effects of drought stress in citrus plants. The longer survival of seedlings in the amended treatment together with the reduction in leaf abscission and the improvement of physiological parameters, can account for a higher vigour of citrus grown under water stress conditions.", "keywords": ["2. Zero hunger", "0106 biological sciences", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1007/s11104-004-1160-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-004-1160-0", "name": "item", "description": "10.1007/s11104-004-1160-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-004-1160-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-03-01T00:00:00Z"}}, {"id": "10.1007/s11104-004-0599-3", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:59Z", "type": "Journal Article", "created": "2005-05-31", "title": "Senna Siamea Trees Recycle Ca From A Ca-Rich Subsoil And Increase The Topsoil Ph In Agroforestry Systems In The West African Derived Savanna Zone", "description": "The functioning of trees as a safety-net for capturing nutrients leached beyond the reach of crop roots was evaluated by investigating changes in exchangeable cations (Ca, Mg, and K) and pH in a wide range of medium to long term alley cropping trials in the derived savanna of West Africa, compared to no-tree control plots. Topsoil Ca content, effective cation exchange capacity, and pH were substantially higher under Sennasiamea than under Leucaena leucocephala, Gliricidia sepium, or the no-tree control plots in sites with a Bt horizon rich in exchangeable Ca. This was shown to be largely related to the recovery of Ca from the subsoil under Senna trees. The increase of the Ca content of the topsoil under Senna relative to the no-tree control treatment was related to the total amount of dry matter applied since trial establishment. The lack of increase in Ca accumulation under the other species was related to potential recovery of Ca from the topsoil itself and/or substantial Ca leaching. The accumulation of Ca in the topsoil under Senna had a marked effect on the topsoil pH, the latter increasing significantly compared with the Leucaena, Gliridia, and no-tree control treatments. In conclusion, the current work shows that the functioning of the often hypothesized \u2018safety-net\u2019 of trees in a cropping system depends on (i) the tree species and on (ii) the presence of a subsoil of suitable quality, i.e., clay enriched and with high Ca saturation.", "keywords": ["0106 biological sciences", "senna siamea", "topsoil", "01 natural sciences", "savannas", "agroforestry", "plant litter", "calcio", "subsoil", "top soil", "sabanas", "2. Zero hunger", "calcium", "biomass", "cerca viva", "capa arable del suelo", "litterfall prunings", "ph del suelo", "hojarasca", "trees", "04 agricultural and veterinary sciences", "15. Life on land", "subsoil ca content", "soil ph", "gliricidia sepium", "leucaena leucocephala", "0401 agriculture", " forestry", " and fisheries", "hedges", "agroforesteria", "leucaena lecocephala"]}, "links": [{"href": "https://doi.org/10.1007/s11104-004-0599-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-004-0599-3", "name": "item", "description": "10.1007/s11104-004-0599-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-004-0599-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-02-01T00:00:00Z"}}, {"id": "10.1007/s11104-004-3848-6", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:14:59Z", "type": "Journal Article", "created": "2005-05-30", "title": "Divergent Effects Of Elevated Co2, N Fertilization, And Plant Diversity On Soil C And N Dynamics In A Grassland Field Experiment", "description": "While increased atmospheric CO2 concentrations, increased N deposition, and changes in plant diversity have all been shown to significantly alter soil carbon (C) and nitrogen (N) dynamics, the effects of these factors have never been studied simultaneously and in combination. We studied the response of soil C and N dynamics to changes in atmospheric CO2 (ambient, 560 ppm), N fertilization (0, 4 g N m\u22122 yr\u22121), plant species number (1, 4 species), and plant functional group number (1, 4 groups; all with 4 species) in a grassland field experiment in Minnesota, USA. During the fourth season of treatments, we used laboratory incubations to assess soil C pool sizes and dynamics and net N mineralization, and determined microbial C and N and total soil C and N. Elevated CO2 increased labile C and microbial biomass, but had no effect on net N mineralization, respiration of more recalcitrant C, or total soil C and N. Nitrogen fertilization increased net N mineralization, because of faster decomposition or less immobilization by litter with higher N concentrations. In the four species plots, N fertilization also increased total soil C and N, likely because greater litter production more than offset any increases in decomposition. Increasing the species number from one to four increased C respiration that could largely be attributed to greater soil C inputs from increased biomass accumulation, but reduced net N mineralization, likely because of greater immobilization in the more productive four-species plots. An increase in functional group number did not affect any of the soil parameters measured. While elevated CO2, N fertilization, and increased species number all increased plant biomass accumulation, they had divergent effects on soil C and N dynamics.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1007/s11104-004-3848-6"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-004-3848-6", "name": "item", "description": "10.1007/s11104-004-3848-6", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-004-3848-6"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-05-01T00:00:00Z"}}, {"id": "10.1007/s11104-005-0194-2", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:59Z", "type": "Journal Article", "created": "2012-03-12", "title": "Long-Term Integrated Soil Fertility Management In South-Western Nigeria: Crop Performance And Impact On The Soil Fertility Status", "description": "Crop response, tree biomass production and changes in soil fertility characteristics were monitored in a long-term (1986\u20132006) alley-cropping trial in Ibadan, Nigeria. The systems included two alley cropping systems with Leucaena leucocephala and Senna siamea on the one hand and a control (no-trees) system on the other hand, all cropped annually with a maize- cowpea rotation. All systems had a plus and minus fertilizer treatment. Over the years, the annual biomass return through tree prunings declined steadily, but more drastically for Leucaena than for Senna. In 2002, the nitrogen contribution from Leucaena residues stabilized at about 200 kg N/ha/year, while the corresponding value for Senna was about 160 kg N/ha/year. On average, the four Leucaena prunings were more equal in biomass as well as in amounts of N, P and cations, while the first Senna pruning was always contributing up to 60% of the annual biomass or nutrient return. Maize crop yields declined steadily in all treatments, but the least so in the Senna + fertilizer treatment where in 2002 still 2.2 t/ha of maize were obtained. Nitrogen fertilizer use efficiency was usually higher in the Senna treatment compared to the control or the Leucaena treatment. Added benefits due to the combined use of fertilizer N and organic matter additions were observed only for the Senna treatment and only in the last 6 years. At all other times, they remained absent or were even negative in the Leucaena treatments for the first 3 years. Most chemical soil fertility parameters decreased in all the treatments, but less so in the alley cropping systems. The presence of trees had a positive effect on remaining carbon stocks, while they were reduced compared to the 1986 data. Trees had a positive effect on the maintenance of exchangeable cations in the top soil. Exchangeable Ca, Mg and K \u2013 and hence ECEC \u2013 were only slightly reduced after 16 years of cropping in the tree-based systems, and even increased in the Senna treatments. In the control treatments, values for all these parameters reduced to 50% or less of the original values after 20 years. All the above points to the Senna-based alley system with fertilizers as the more resilient one. This is reflected in all soil fertility parameters, in added benefits due to the combined use of fertilizer nitrogen and organic residue application and in a more stable maize yield over the years, averaging 2.8 t/ha with maximal deviations from the average not exceeding 21%.", "keywords": ["alley cropping", "0106 biological sciences", "added benefits", "fertilizers", "senna siamea", "yields", "dry matter content", "fertilidad del suelo", "maize", "01 natural sciences", "nitrogen use efficiency", "cowpeas", "ma\u00edz", "zea mays", "vigna unguiculata", "propiedades f\u00edsico - qu\u00edmicas suelo", "aplicaci\u00f3n de abonos", "hedgerow", "fijaci\u00f3n del nitr\u00f3geno", "2. Zero hunger", "biomass", "caup\u00ed", "soil chemicophysical properties", "nutrient", "soil fertility", "fertilizer application", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "biomasa", "leucaena leucocephala", "nitrogen fixation", "cultivo entre l\u00edneas", "0401 agriculture", " forestry", " and fisheries", "rendimiento", "contenido de materia seca"]}, "links": [{"href": "http://ciat-library.ciat.cgiar.org/Articulos_Ciat/D2-PDF.pdf"}, {"href": "https://doi.org/10.1007/s11104-005-0194-2"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-0194-2", "name": "item", "description": "10.1007/s11104-005-0194-2", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-0194-2"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-06-01T00:00:00Z"}}, {"id": "10.1007/s11104-005-7459-7", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2005-11-24", "title": "Crop Yields, Internal Nutrient Efficiency, And Changes In Soil Properties In Rice\u2013Wheat Rotations Under Non-Flooded Mulching Cultivation", "description": "A field experiment was conducted for 5 years to examine the effects of non-flooded mulching cultivation on crop yield, internal nutrient efficiency and soil properties in rice\u2013wheat (R\u2013W) rotations of the Chengdu Plain, southwest China. Compared with traditional flooding (TF), non-flooded plastic film mulching (PM) resulted in 12 and 11% higher average rice (Oryza sativa L.) yield and system productivity (combined rice and wheat yields), and the trends in rice and wheat (Triticum aestivum L.) yields under PM were stable over time. However, non-flooded wheat straw mulching (SM) decreased average rice yield by 11% compared with TF, although no significant difference in system productivity was found between SM and TF. Uptakes of N and K by rice under PM were higher than those under TF and SM, but internal nutrient efficiency was significantly lower (N) or similar (K) under PM compared to SM and TF. This implies that more N and K accumulated in rice straw under PM. After 5-year rice\u2013wheat rotation, apparent P balances (112\u2013160 kg ha\u22121) were positive under all three cultivation systems. However, the K balances were negative under PM (\u2212419 kg ha\u22121) and TF (\u221290 kg ha\u22121) compared with SM (45 kg ha\u22121). This suggests that higher K inputs from fertilizer, straw or manure may be necessary, especially under PM. After five rice seasons and four wheat seasons, non-flooded mulching cultivation led to similar (PM) or higher (SM) soil organic carbon (SOC), total N (TN) and alkali hydrolyzable N (AH-N) in the top 0\u20135 and 5\u201312 cm layers compared with TF. SOC, TN, AH-N and Olsen-P (OP) in the sub-surface layer (12\u201324 cm) were significantly higher under PM or SM than under TF, indicating that rice under non-flooded mulching conditions may fail to make use of nutrients from the subsoil. Thus, the risk of decline in soil fertility under non-flooded mulching cultivation could be very low if input levels match crop requirements. Our data indicate that PM and SM may be alternative options for farmers using R\u2013W rotations for enhancement or maintenance of system productivity and soil fertility.", "keywords": ["/dk/atira/pure/subjectarea/asjc/1100/1111", "2. Zero hunger", "/dk/atira/pure/subjectarea/asjc/1100/1102", "/dk/atira/pure/subjectarea/asjc/1100/1110", "Soil Science", "0401 agriculture", " forestry", " and fisheries", "Plant Science", "04 agricultural and veterinary sciences", "15. Life on land", "Agronomy and Crop Science", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-7459-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-7459-7", "name": "item", "description": "10.1007/s11104-005-7459-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-7459-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-12-01T00:00:00Z"}}, {"id": "10.1007/s11104-005-9641-3", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2006-05-08", "title": "Changes In Soil Microbial Community Associated With Invasion Of The Exotic Weed, Mikania Micrantha Hbk", "description": "Invasions of exotic plant species are among the most pervasive and important threats to natural ecosystems. However, the effects of plant invasions on soil processes and soil biota have not been adequately investigated. Changes were studied in soil microbial communities where Mikania micrantha was invading a native forest community in Neilingding Island, Shenzhen, China. The soil microbial community structure (assessed by phospholipid fatty acid [PLFA] profiles) and function (assessed by enzyme activities), as well as soil chemical properties were measured. The results showed that the invasion of M.\u00a0micrantha into the evergreen broadleaved forests in South China changed most of the characteristics in studied soils. Microbial community structure and function differed significantly among the native, two ecotones, and exotic-derived soils. For PLFA profiles, we observed a significant increase in aerobic bacteria but a decrease in anaerobic bacteria in the M.\u00a0micrantha monoculture as compared to the native and ecotones. The ratio of cy19:0 to18:1\u03c97 gradually declined but mono/sat PLFAs increased as M.\u00a0micrantha became more dominant. Both ratios were significantly related to pH according to regression analysis, therefore, pH was a sensitive indicator reflecting the invaded soil subsystem succession. The microbial community composition clearly separated the native soil from the invaded soils by principal component analysis (PCA) and discriminant analysis (DA). For enzyme activities, 7 of 9 enzymes (\u03b2-glucosidase, invertase, protease, urease, acid phosphatase, alkaline phosphatase, and phenol oxidase) showed the similar trend that the activities were highest in the exotic, intermediate in the two ecotones, and lowest in the native community. In most cases, enzyme activities were influenced by soil chemical properties, especially by pH value and soil organic matter. Differences in the structural variables were well correlated to differences in the functional variables as demonstrated by canonical correlation analysis (CCA). It was concluded that M.\u00a0micrantha invasion had profound effects on the soil subsystem, which must be taken into account when we try to control its invasions.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"], "contacts": [{"organization": "Guo-rong Xin, Zhong-Yi Yang, Cong-bang Zhang, Hong-bo Jiang, Wei-hua Li, Wei-hua Li,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-9641-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-9641-3", "name": "item", "description": "10.1007/s11104-005-9641-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-9641-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-03-01T00:00:00Z"}}, {"id": "10.1007/s11104-005-1257-0", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2005-11-17", "title": "Increased Topsoil Mineral Nutrient Concentrations Under Exotic Invasive Plants In Belgium", "description": "Exotic invasive plants can alter ecosystem processes. For the first time in Europe, we have analysed the impacts of exotic invasive plants on topsoil chemical properties. At eight sites invaded by five exotic invasive species (Fallopia japonica, Heracleum mantegazzianum, Solidago gigantea, Prunus serotina and Rosa rugosa), soil mineral element composition was compared between invaded patches and adjacent, uninvaded vegetation. We found increased concentrations of exchangeable essential nutrients under the canopy of exotic invasive plants, most strikingly so for K and Mn (32% and 34% increase, respectively). This result fits in well with previous reports of enhanced N dynamics in invaded sites, partly due to higher net primary productivity in exotic invasive plants compared to native vegetation.", "keywords": ["Soil nutrients", "0106 biological sciences", "Plant-soil interactions", "Invasive species", "Alien species", "Ecosystem processes", "Plant invasions", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "P\u00e9dologie", "Agronomie du sol", "0401 agriculture", " forestry", " and fisheries", "Botanique g\u00e9n\u00e9rale"]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-1257-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-1257-0", "name": "item", "description": "10.1007/s11104-005-1257-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-1257-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-08-01T00:00:00Z"}}, {"id": "10.1007/s11104-004-2267-z", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:14:59Z", "type": "Journal Article", "created": "2005-05-31", "title": "Liming And Nitrogen Fertilization Affects Phosphatase Activities, Microbial Biomass And Mycorrhizal Colonisation In Upland Grassland", "description": "We have studied the effects of factorial combinations of lime and N additions on soil microbial biomass, respiration rates and phosphatase activity of an upland grassland. We also used an Agrostis capillaris seedling bioassay to assess the effect of the treatments on the activity of arbuscular-mycorrhizal (AM) fungi and root surface phosphatase enzymes and the concentrations of N and P in the bioassay plant shoots. In the F and H horizons, soil microbial biomass carbon (Cmic) decreased in response to the liming, while addition of lime and N together reduced basal respiration rates. In the Ah horizon, Cmic was unaffected by the treatments but basal respiration rates decreased in the plots receiving nitrogen. Soil phosphatase activity decreased only in the Ah horizon in plots receiving lime, either in combination with N or alone. The mass of root fwt. colonized by AM fungi increased in response to the treatments in the order nitrogen0.05) effect on SMBC, SMBN and WSOC, while crop rotation significantly (P<0.0001) affected both SMBC and WSOC. These results demonstrate that crop rotation do not necessarily influence the gross soil microbial biomass, but may affect physiologically distinct subcomponent of the microbial biomass. The soils under the various rotations had a predominance of fungi community as indicated by their wide biomass C/N ratio ranging from 9.2 to 20.9 suggesting fungi to be mainly responsible for decomposition in these soils. Soil microbial biomass and WSOC showed significant (P<0.05) correlation with both soil pH and organic carbon but no relationship with total N. Based on these results, it appears that the soil pH and organic carbon determined the flux of the soil microbial biomass and amount of WSOC in these soils.", "keywords": ["2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-3828-5"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-3828-5", "name": "item", "description": "10.1007/s11104-005-3828-5", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-3828-5"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-03-01T00:00:00Z"}}, {"id": "10.1007/s11104-005-2950-8", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2006-02-24", "title": "The Impact Of Nitrogen Placement And Tillage On No, N2o, Ch4 And Co2 Fluxes From A Clay Loam Soil", "description": "To evaluate the impact of N placement depth and no-till (NT) practice on the emissions of NO, N2O, CH4 and CO2 from soils, we conducted two N placement experiments in a long-term tillage experiment site in northeastern Colorado in 2004. Trace gas flux measurements were made 2\u20133 times per week, in zero-N fertilizer plots that were cropped continuously to corn (Zea mays L.) under conventional-till (CT) and NT. Three N placement depths, replicated four times (5, 10 and 15 cm in Exp. 1 and 0, 5 and 10 cm in Exp. 2, respectively) were used. Liquid urea\u2013ammonium nitrate (UAN, 224 kg N ha\u22121) was injected to the desired depth in the CT- or NT-soils in each experiment. Mean flux rates of NO, N2O, CH4 and CO2 ranged from 3.9 to 5.2 \u03bcg N m\u22122 h\u22121, 60.5 to 92.4 \u03bcg N m\u22122 h\u22121, \u22120.8 to 0.5 \u03bcg C m\u22122 h\u22121, and 42.1 to 81.7 mg C m\u22122 h\u22121 in both experiments, respectively. Deep N placement (10 and 15 cm) resulted in lower NO and N2O emissions compared with shallow N placement (0 and 5 cm) while CH4 and CO2 emissions were not affected by N placement in either experiment. Compared with N placement at 5 cm, for instance, averaged N2O emissions from N placement at 10 cm were reduced by more than 50% in both experiments. Generally, NT decreased NO emission and CH4 oxidation but increased N2O emissions compared with CT irrespective of N placement depths. Total net global warming potential (GWP) for N2O, CH4 and CO2 was reduced by deep N placement only in Exp. 1 but was increased by NT in both experiments. The study results suggest that deep N placement (e.g., 10 cm) will be an effective option for reducing N oxide emissions and GWP from both fertilized CT- and NT-soils.", "keywords": ["13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "6. Clean water"], "contacts": [{"organization": "Fusuo Zhang, Arvin R. Mosier, Xuejun Liu, Ardell D. Halvorson,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-2950-8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-2950-8", "name": "item", "description": "10.1007/s11104-005-2950-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-2950-8"}, {"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": "10.1007/s11104-005-3864-1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2005-11-16", "title": "Effect Of Drought And Weed Management On Maize Genotypes And The Tensiometric Soil Water Content Of An Eutric Nitisol In South Western Nigeria", "description": "In the dry savannas of West and Central Africa, where low soil fertility, unpredictable rainfall, weed competition and recurrent drought are major constraints to maize production, the development of tropical maize genotypes with high and stable yields under drought and low-nitrogen condition is very important since access to these improved genotypes may be the only affordable alternative to many small scale farmers. Field trials were conducted in 2002 and 2003\u00a0at Ikenne southwestern Nigeria to investigate the effect of weed pressures and drought stress on 2 maize (Zea mays L.) hybrids (9134-14, 9803-9) and 2 open-pollinated varieties (STREVIWD, IYFDCO1). Irrigation was withdrawn 4 weeks after planting (about four weeks to mid-flowering) in the drought stress while the adjacent watered treatment had irrigation throughout the growing period. The weed pressures were the completely weeded plots (hand weeding every week) and weedy plots (weeded once, 2 weeks after planting). The experiment was a split plot in a randomized complete block design with four replicates. Drought stress reduced the stover weight and grain yield of the maize cultivars by 6% and 34% respectively. Weed-free plots had maize with higher agronomic traits than unweeded treatments. Hybrid 9803-9 was more susceptible to drought and weed stress as indicated in the stover weight and grain yield. STREVIWD an open-pollinated variety (OPV) and Hybrid 9134-14 had superior performances in terms of grain yield and shorter anthesis silking interval. Soil moisture content was higher in the unweeded plots while the uptake of moisture was highest in drought susceptible hybrid 9803-9. Irrespective of the genotypes, maize (hybrid and OPV) was more tolerant to drought in a weed-free environment than in unweeded conditions. There existed a negative but significant correlation between weed biomass and chlorophyll content (\u22120.29, P < 0.01), grain yield (\u22120.45, P < 0.05), ear plant\u22121 (\u22120.27, P < 0.05) and kernel-number (\u22120.366 P < 0.01).", "keywords": ["2. Zero hunger", "0106 biological sciences", "eutric nitisol", "weeded plots", "nutrient", "drought stress", "maize genotypes", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "6. Clean water", "weed management"]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-3864-1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-3864-1", "name": "item", "description": "10.1007/s11104-005-3864-1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-3864-1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-10-01T00:00:00Z"}}, {"id": "10.1007/s11104-005-5446-7", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2006-06-21", "title": "Response Of Litter Decomposition To Simulated N Deposition In Disturbed, Rehabilitated And Mature Forests In Subtropical China", "description": "The response of decomposition of litter for the dominant tree species in disturbed (pine), rehabilitated (pine and broadleaf mixed) and mature (monsoon evergreen broadleaf) forests in subtropical China to simulated N deposition was studied to address the following hypothesis: (1) litter decomposition is faster in mature forest (high soil N availability) than in rehabilitated/disturbed forests (low soil N availability); (2) litter decomposition is stimulated by N addition in rehabilitated and disturbed forests due to their low soil N availability; (3) N addition has little effect on litter decomposition in mature forest due to its high soil N availability. The litterbag method (a total of 2880 litterbags) and N treatments: Control-no N addition, Low-N: \u22125\u00a0g\u00a0N\u00a0m\u22122\u00a0y\u22121, Medium-N: \u221210\u00a0g\u00a0N\u00a0m\u22122\u00a0y\u22121, and High-N: \u221215\u00a0g\u00a0N\u00a0m\u22122 y\u22121, were employed to evaluate decomposition. Results indicated that mature forest, which has likely been N saturated due to both long-term high N deposition in the region and the age of the ecosystem, had the highest litter decomposition rate, and exhibited no significant positive and even some negative response to nitrogen additions. However, both disturbed and rehabilitated forests, which are still N limited due to previous land use history, exhibited slower litter decomposition rates with significant positive effects from nitrogen additions. These results suggest that litter decomposition and its responses to N addition in subtropical forests of China vary depending on the nitrogen status of the ecosystem.", "keywords": ["0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land"]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-5446-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-5446-7", "name": "item", "description": "10.1007/s11104-005-5446-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-5446-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-04-01T00:00:00Z"}}, {"id": "10.1007/s11104-005-5691-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2005-11-16", "title": "Uptake Of Selenium And Its Antioxidant Activity In Ryegrass When Applied As Selenate And Selenite Forms", "description": "Selenium (Se) is an essential micronutrient for animal and human nutrition, but whether it is essential to plants remains controversial. However, there are increasing experimental evidences that indicate a protective role of Se against the oxidative stress in higher plants through Se-dependent glutathione peroxidase (GSH-Px) activity. The effects of the Se chemical forms, selenite and selenate, the rate of their application on shoot Se concentration and their influence on the antioxidative system of ryegrass (Lolium perenne cv. Aries), through the measurement of GSH-Px activity and lipid peroxidation, were evaluated in an Andisol of Southern Chile. Moreover, a soil\u2013plant relationship for Se was determined and a simple method to extract available Se from acid soils is proposed. In a 55-day experiment ryegrass seeds were sown in pots and soil was treated with sodium selenite or sodium selenate (0\u201310 mg Se kg\u22121). The results showed that the Se concentration in shoots increased with the application of both selenite and selenate. However, the highest shoot Se concentrations were obtained in selenate-treated plants. For both sources of Se, there was a significant positive correlation between the shoot Se concentration and the GSH-Px activity; and the Se-dependence of this enzymatic activity was related especially with the chemical form of applied Se rather than the Se concentration in plant tissues. Furthermore, the lipid peroxidation, as measured by Thiobarbituric Acid Reactive Substances (TBARS), decreased at low levels of shoot Se concentration, reaching the lowest level at approximately 20 mg Se kg\u22121 in plants and then increased steadily above this level. In addition, the acid extraction method used to evaluate available Se in soil showed a positive good correlation between soil Se and shoot Se concentrations irrespective of chemical form of Se applied.", "keywords": ["0106 biological sciences", "Selenium", "ryegrass", "antioxidant activity", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "01 natural sciences", "Selenium; antioxidant activity; ryegrass"]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-5691-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-5691-9", "name": "item", "description": "10.1007/s11104-005-5691-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-5691-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-10-01T00:00:00Z"}}, {"id": "10.1007/s11104-005-4291-z", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2005-02-10", "title": "Wood-Ash Recycling Affects Forest Soil And Tree Fine-Root Chemistry And Reverses Soil Acidification", "description": "Wood ash was applied to a forest ecosystem with the aim to recycle nutrients taken from the forest and to mitigate the negative effects of intensive harvesting. After two years, the application of 8,000 kg ha\u22121 of wood ash increased soil exchangeable Ca and Mg. Similarly, an increase in Ca and Mg in the Norway spruce fine roots was recorded, leading to significant linear correlations between soil and root Ca and soil and root Mg. In contrast to these macronutrients, the micronutrients Fe and Zn and the toxic element Al decreased in the soil exchangeable fraction with the addition of wood ash, but not in the fine roots. Only Mn decreased in soil and in fine roots leading to a significant linear correlation between soil and root Mn. In soil, as well as in fine roots, strong positive correlations were found between the elements Ca and Mg and between Fe and Al. This indicates that the uptake of Mg resembles that of Ca and that of Al that of Fe. With the wood ash application, the pH increased from 3.2 to 4.8, the base saturation from 30% to 86%, the molar basic cations/Al ratio (BC/Al) of the soil solution from 1.5 to 5.5, and the molar Ca/Al ratio of the fine roots from 1.3 to 3.7. Overall, all below-ground indicators of soil acidification responded positively to the wood ash application within two years. Nitrate concentrations increased only slightly in the soil solution at a soil depth of 75\u201380 cm, and no signs of increased heavy metal concentrations in the soils or in the fine roots were apparent. This suggests that the recycling of wood ash could be an integral part of sustainable forest management because it closes the nutrient cycle and reverses soil acidification.", "keywords": ["0106 biological sciences", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "12. Responsible consumption"]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-4291-z"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-4291-z", "name": "item", "description": "10.1007/s11104-005-4291-z", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-4291-z"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2004-12-01T00:00:00Z"}}, {"id": "10.1007/s11104-005-5675-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2005-11-16", "title": "Increased Quantity And Quality Of Coarse Soil Organic Matter Fraction At Elevated Co2 In A Grazed Grassland Are A Consequence Of Enhanced Root Growth Rate And Turnover", "description": "The aims of this study were to determine whether elevated atmospheric CO2 concentration modifies plant organic matter (OM) fluxes to the soil and whether any change in the fluxes can modify soil OM accumulation. Measurements were made in a grazed temperate grassland after almost 4\u00a0years exposure to elevated atmospheric CO2 (475\u00a0\u03bcl\u00a0l-1) using a Free Air CO2 Enrichment (FACE) facility located in the North Island of New Zealand. Aboveground herbage biomass and leaf litter production were not altered by elevated CO2 but root growth rate, as measured with the ingrowth core method, and root turnover were strongly stimulated by elevated CO2 particularly at low soil moisture contents during summer. Consequently, significantly more plant material was returned to the soil under elevated CO2 leading to an accumulation of coarse (> 1\u00a0mm) particulate organic matter (POM) but not of finer POM fractions. The accumulating POM exhibited a lower C/N ratio, which was attributed to the higher proportion of legumes in the pasture under elevated CO2. Only small changes were detected in the size and activity of the soil microbial biomass in response to the POM accumulation, suggesting that higher organic substrate availability did not stimulate microbial growth and activity despite the apparent lower C/N ratio of accumulating POM. As a result, elevated CO2 may well lead to an accumulation of OM in grazed grassland soil in the long term.", "keywords": ["580", "2. Zero hunger", "PARTICULATE ORGANIC MATTER", "ANTHOXANTHUM ODORATUM", "ROOT GROWTH", "04 agricultural and veterinary sciences", "15. Life on land", "ROOT TURNOVER", "C SEQUESTRATION", "FACE", "13. Climate action", "INGROWTH CORE", "HYPOCHOERIS RADICATA", "[SDV.BV]Life Sciences [q-bio]/Vegetal Biology", "0401 agriculture", " forestry", " and fisheries", "[SDV.BV] Life Sciences [q-bio]/Vegetal Biology"]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-5675-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-5675-9", "name": "item", "description": "10.1007/s11104-005-5675-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-5675-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-10-01T00:00:00Z"}}, {"id": "10.1007/s11104-005-7011-9", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2005-11-24", "title": "Study On The Relationship Between Soil Selenium And Plant Selenium Uptake", "description": "Various extraction methods have been used to determine selenium (Se) concentrations in soils and plants in the second seleniferous regions of China. Our results show tea Se contents in the study area range from 1.009 to 2.6 mg/kg, which reveal that the tea areas in Ziyang County are in seleniferous regions. The four extraction methods evaluated in this study provide different information concerning soil and plant Se levels. The quality control/quality assurance program for this project indicated there is excellent agreement between total soil Se and extractable Se. For example, phosphate extractable Se results from the field investigation and greenhouse study were found to be highly correlated (R 2 > 0.91) by linear regression analyses. Results from rye seedling experiments further show phosphate extractable Se has significant correlations with plant Se uptake and that a 0.1 M solution of KH2PO4 can be used as the extractant of soil available Se. In the acid soil, the Brassica campestris yield could be significantly reduced when the content of Se 6+ \u2013Se \u2021 0.5 mg/kg, and the influence on the yield was not as obvious when the content of Se 6+ \u2013Se reached up to 2.0 mg/kg. The uptake by Brassica campestris of Se 6+ \u2013Se is higher than that of Se 4+ \u2013Se. The main factors influencing the biological availability of soil Se, in order of their importance are CaCO3, the presence of silt grains, organic matter and the presence of clay grains. pH could affect KH2PO4 extractable Se through CaCO3.", "keywords": ["2. Zero hunger", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "6. Clean water", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Chengze Xue, Erda Lin, Chengyi Zhao, Jinghua Ren,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-7011-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-7011-9", "name": "item", "description": "10.1007/s11104-005-7011-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-7011-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-12-01T00:00:00Z"}}, {"id": "10.1007/s11104-005-8770-z", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2005-11-29", "title": "Does The Gradualness Of Leaf Shedding Govern Nutrient Resorption From Senescing Leaves In Mediterranean Woody Plants?", "description": "Open AccessPeer reviewed", "keywords": ["2. Zero hunger", "0106 biological sciences", "Resorption proficiency", "Nutrient retranslocation", "Resorption efficiency", "Potassium", "Leaf shedding phenology", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "Nutrient status", "01 natural sciences"]}, "links": [{"href": "https://doi.org/10.1007/s11104-005-8770-z"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-005-8770-z", "name": "item", "description": "10.1007/s11104-005-8770-z", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-005-8770-z"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-12-01T00:00:00Z"}}, {"id": "10.1007/s11104-006-0029-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2006-07-21", "title": "Responses Of Maize Grain Yield To Changes In Acid Soil Characteristics After Soil Amendments", "description": "An experiment was conducted from 1997 to 2000 on an acid soil in Cameroon to assess the effectiveness of cultivating acid tolerant maize (Zea mays L.) cultivar and the use of organic and inorganic fertilizers as options for the management of soil acidity. The factors investigated were: phosphorus (0 and 60 kg ha\u22121), dolomitic lime (0 and 2 t ha\u22121), organic manure (no manure, 4 t ha\u22121 poultry manure, and 4 t ha\u22121 of leaves of Senna spectabilis), and maize cultivars (ATP-SR-Y \u2013 an acid soil-tolerant, and Tuxpeno sequia \u2013 an acid susceptible). On acid soil, maize grain yield of ATP-SR-Y was 61% higher than the grain yield of Tuxpeno sequia. Continuous maize cultivation on acid soil further increased soil acidity, which was manifested by a decrease in pH (0.23 unit), exchangeable Ca (31%) and Mg (36%) and by an increase in exchangeable Al (20%). Yearly application of 60 kg ha\u22121 of P for 3 years increased soil acidity through increases in exchangeable Al (8%) and H (16%) and a decrease in exchangeable Ca (30%), Mg (11%) and pH (0.07 unit). Lime application increased grain yield of the tolerant (82%) and susceptible (208%) cultivars. The grain yield increases were associated with a mean decrease of 43% in exchangeable Al, and 51% in H, a mean increase of 0.27 unit in pH, 5% in CEC, 154% in exchangeable Ca, and 481% in Mg contents of the soil. Poultry manure was more efficient than leaves of Senna producing 38% higher grain yield. This yield was associated with increases in pH, Ca, Mg and P, and a decrease in Al. The highest mean grain yields were obtained with lime added to poultry manure (4.70 t ha\u22121) or leaves of Senna (4.72 t ha\u22121). Grain yield increase was more related to the decrease in exchangeable Al (r = \u22120.86 to \u22120.95, P<0.01) and increase in Ca (r = 0.78\u20130.94, P<0.01), than to pH (r = \u22120.57 (non-significant) to \u22120.58 (P<0.05)). Exchangeable Al was the main factor determining pH (r = \u22120.88 to \u22120.92, P<0.01). The yield advantage of the acid tolerant cultivar was evident even after correcting for soil acidity. Acid soil-tolerant cultivars are capable of bringing unproductive acid soils into cultivation on the short run. The integration of soil amendments together with acid soil-tolerant cultivar offers a sustainable and comprehensive strategy for the management of acid soils in the tropics.", "keywords": ["0106 biological sciences", "2. Zero hunger", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "F04 - Fertilisation"], "contacts": [{"organization": "Th\u00e9, Charles, Calba, Henri, Zonkeng, C\u00e9licard, Ngonkeu, Eddy L\u00e9onard Mangaptch\u00e9, Adetimirin, Victor O., Mafouasson, Hortense A., Meka, S.S., Horst, Walter J.,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s11104-006-0029-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-006-0029-9", "name": "item", "description": "10.1007/s11104-006-0029-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-006-0029-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-06-01T00:00:00Z"}}, {"id": "10.1007/s11104-006-0055-7", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-03T16:15:00Z", "type": "Journal Article", "created": "2006-07-21", "title": "Soil Nitrate Accumulation, Leaching And Crop Nitrogen Use As Influenced By Fertilization And Irrigation In An Intensive Wheat\u2013Maize Double Cropping System In The North China Plain", "description": "There is a growing concern about excessive nitrogen (N) and water use in agricultural systems in North China due to the reduced resource use efficiency and increased groundwater pollution. A two-year experiment with two soil moisture by four N treatments was conducted to investigate the effects of N application rates and soil moisture on soil N dynamics, crop yield, N uptake and use efficiency in an intensive wheat\u2013maize double cropping system (wheat\u2013maize rotation) in the North China Plain. Under the experimental conditions, crop yield of both wheat and maize did\u2423not\u2423increase significantly at N rates above 200\u00a0kg\u00a0N\u00a0ha\u22121. Nitrogen application rates affected little on ammonium-N (NH4-N) content in the 0\u2013100\u00a0cm soil profiles. Excess nitrate-N (NO3-N), ranging from 221\u00a0kg\u00a0N\u00a0ha\u22121 to 620\u00a0kg\u00a0N\u00a0ha\u22121, accumulated in the 0\u2013100\u00a0cm soil profile at the end of second rotation in the treatments with N rates of 200\u00a0kg\u00a0N\u00a0ha\u22121 and 300\u00a0kg\u00a0N\u00a0ha\u22121. In general, maize crop has higher N use efficiency than wheat crop. Higher NO3-N leaching occurred in maize season than in wheat season due to more water leakage caused by the concentrated summer rainfall. The results of this study indicate that the optimum N rate may be much lower than that used in many areas in the North China Plain given the high level of N already in the soil, and there is great potential for reducing N inputs to increase N use efficiency and to mitigate N leaching into the groundwater. Avoiding excess water leakage through controlled irrigation and matching N application to crop N demand is the key to reduce NO3-N leaching and maintain crop yield. Such management requires knowledge of crop water and N demand and soil N dynamics as they change with variable climate temporally and spatially. Simulation modeling can capture those interactions and is considered as a powerful tool to assist in\u2423the\u2423future optimization of N and irrigation managements.", "keywords": ["0106 biological sciences", "2. Zero hunger", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "04 agricultural and veterinary sciences", "15. Life on land", "01 natural sciences", "6. Clean water"]}, "links": [{"href": "https://doi.org/10.1007/s11104-006-0055-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Plant%20and%20Soil", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11104-006-0055-7", "name": "item", "description": "10.1007/s11104-006-0055-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11104-006-0055-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2006-06-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Tr&offset=1600&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Tr&offset=1600&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": "prev", "title": "items (prev)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Tr&offset=1550", "hreflang": "en-US"}, {"rel": "next", "type": "application/geo+json", "title": "items (next)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=Tr&offset=1650", "hreflang": "en-US"}], "numberMatched": 15545, "numberReturned": 50, "distributedFeatures": [], "timeStamp": "2026-04-04T11:30:51.774534Z"}