{"type": "FeatureCollection", "features": [{"id": "10.1016/j.foreco.2007.10.027", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T06:57:04Z", "type": "Journal Article", "created": "2007-12-06", "title": "Pairwise Comparison Of Soil Organic Particle-Size Distributions In Native Savannas And Eucalyptus Plantations In Congo", "description": "Abstract   Conversion of native vegetation into fast-growing tree plantations is known to affect soil organic matter (SOM): soil carbon (C) and nitrogen (N) content and their distribution in particle-size fractions can be modified in various ways depending on numerous factors, such as soil properties, SOM levels prior to conversion, climatic conditions, silvicultural practices and fire occurrence. Since 1978, 43,000\u00a0ha of clonal eucalyptus plantations have been established on sandy coastal plains under savannas near Pointe-Noire, Congo. We investigated the effects of afforestation on topsoil (0\u201310\u00a0cm) C and N through the analysis of their distribution in particle-size fractions using a pairwise experimental design that compared adjacent savannas and plantations. The studied plantations were of different ages (2\u201330-year-old stands) and differently affected by accidental fires. No significant difference in total topsoil C, N or C/N was observed between young plantations and savanna. In old plantations that had not been affected by fire, total topsoil C content was twice as high as in savanna (   p  =  0.0016   ), on average, mostly involving fractions    >   50\u00a0    \u03bc    m. By contrast, total topsoil N did not differ significantly at these sites. In old plantations affected by fire, total topsoil C content did not differ significantly from that in savanna, but total topsoil N was 26    %    lower in plantations than in savanna (   p  =  0.0063   ), on average, and the decrease affected fractions       200\u00a0    \u03bc    m especially. Whatever the fire occurrence, total topsoil C/N was higher in old plantations than in savanna, in fractions    >   20\u00a0    \u03bc    m especially.", "keywords": ["[SDV.SA.SF]Life Sciences [q-bio]/Agricultural sciences/Silviculture", "http://aims.fao.org/aos/agrovoc/c_7190", "SAVANNA", "SOIL ORGANIC MATTER", "FIRE", "analyse de sol", "FLUX ET STOCKS C", "http://aims.fao.org/aos/agrovoc/c_35657", "azote", "2. Zero hunger", "Eucalyptus", "FRACTIONATION", "fraction du sol", "forestry", "FIRE", "04 agricultural and veterinary sciences", "eucalyptus", "META ANALYSIS", "TURNOVER", "[SDV.SA.SF] Life Sciences [q-bio]/Agricultural sciences/Silviculture", " forestry", "plantations", "particle size fractionation", "http://aims.fao.org/aos/agrovoc/c_5990", "fire", "mati\u00e8re organique du sol", "http://aims.fao.org/aos/agrovoc/c_2683", "P33 - Chimie et physique du sol", "570", "PARTICLE-SIZE FRACTIONATION", "http://aims.fao.org/aos/agrovoc/c_24420", "MATTER DYNAMICS", "http://aims.fao.org/aos/agrovoc/c_5192", "TROPICAL SOILS", "LITTER DECOMPOSITION", "soil organic matter", "MANAGEMENT", "EUCALYPTUS", "savane", "http://aims.fao.org/aos/agrovoc/c_1301", "PINUS", "CHANGEMENT D'USAGE DES TERRES", "CARBON DYNAMICS", "http://aims.fao.org/aos/agrovoc/c_1811", "15. Life on land", "savanna", "K10 - Production foresti\u00e8re", "AFFORESTATION", "http://aims.fao.org/aos/agrovoc/c_6825", "0401 agriculture", " forestry", " and fisheries", "carbone", "impact sur l'environnement", "http://aims.fao.org/aos/agrovoc/c_7198"]}, "links": [{"href": "https://doi.org/10.1016/j.foreco.2007.10.027"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Forest%20Ecology%20and%20Management", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.foreco.2007.10.027", "name": "item", "description": "10.1016/j.foreco.2007.10.027", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.foreco.2007.10.027"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-03-01T00:00:00Z"}}, {"id": "10.1016/j.oneear.2024.11.018", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T06:57:28Z", "type": "Journal Article", "created": "2024-12-20", "title": "A microbial framework for nitrogen cycling solutions in agroecosystems", "description": "Nitrogen use in agriculture often prioritizes immediate yield gains at the expense of the environment and agroecosystem health. This problem persists because current solutions for crop nitrogen use inefficiency focus too narrowly on inputs and overlook the internal processes that govern nitrogen's fate, from crop uptake and environmental losses to storage and transfer between various organic pools. We synthesize recent research developments in soil nitrogen biogeochemistry into an aspirational and accessible microbe-centered framework that clarifies understanding of nitrogen accumulation, recycling, and plant uptake processes in soil. This framework can guide scientific exploration and practical applications to boost crop yields, enrich soil organic matter, and reduce environmental nitrogen losses.", "keywords": ["[SDE] Environmental Sciences", "diversification", "propri\u00e9t\u00e9 physicochimique du sol", "http://aims.fao.org/aos/agrovoc/c_27870", "F08 - Syst\u00e8mes et modes de culture", "rendement des cultures", "agro\u00e9cologie", "http://aims.fao.org/aos/agrovoc/c_5192", "http://aims.fao.org/aos/agrovoc/c_27938", "630", "fertilisation", "plante de couverture", "cycle de l'azote", "http://aims.fao.org/aos/agrovoc/c_10176", "http://aims.fao.org/aos/agrovoc/c_36669", "efficacit\u00e9 d'utilisation de l?azote", "http://aims.fao.org/aos/agrovoc/c_10795", "http://aims.fao.org/aos/agrovoc/c_35657", "azote", "http://aims.fao.org/aos/agrovoc/c_1936", "http://aims.fao.org/aos/agrovoc/c_7182", "agro\u00e9cosyst\u00e8me", "engrais min\u00e9ral", "http://aims.fao.org/aos/agrovoc/c_92381", "http://aims.fao.org/aos/agrovoc/c_fd20296f", "[SDE]Environmental Sciences", "http://aims.fao.org/aos/agrovoc/c_2344", "F04 - Fertilisation", "mati\u00e8re organique du sol"]}, "links": [{"href": "https://doi.org/10.1016/j.oneear.2024.11.018"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/One%20Earth", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.oneear.2024.11.018", "name": "item", "description": "10.1016/j.oneear.2024.11.018", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.oneear.2024.11.018"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-12-01T00:00:00Z"}}, {"id": "10.1080/08903060050136432", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T06:59:00Z", "type": "Journal Article", "created": "2002-07-26", "title": "Alley Cropping Of Maize And Gliricidia Sepium In The Sudanese Sahel Region: Some Technical Feasibility Aspects", "description": "An association in an alley cropping experiment of a short-term maize variety and a tree legume (#Gliricidia sepium#) adapted to the Sudanese Sahel region was studied from the point of view of the nitrogen balance and plot yields. Isotopic labelling applied in the field enabled the contribution to maize nitrogen nutrition from different nitrogen sources (fertilizer, prunings, and soil) to be quantified. For equal cultivated areas, alley cropping provides a maize yield greater than that of maize grown in pure stand without nitrogen fertilizer. However this yield is only 40% of that obtained in pure stands with fertilizer nitrogen. Alley cropping gives a very favourable Land Equivalent Ratio (LER) of 0.90 and 1.58 compared with N-fertilized and non-N-fertilized plots, respectively. These LERs demonstrate the increased biological efficiency of the cultivated soil in an agroforestry system. The percentage of the total nitrogen in the maize coming from prunings (Nfdp) varies between 30 and 35% and the true coefficient of nitrogen utilization of the prunings (TCUp) varies from 15-25%. In the environment of central Senegal, the percentage of total nitrogen of #G. sepium# coming from N2 fixation is quite low (Ndffix = 25%), and consequently, in the maize, the nitrogen coming from N2 fixation (Ndffix) is only 8%. It is therefore necessary to improve the efficiency of nitrogen fixation of #G. sepium# in this zone to assure the sustainability of the agroforestry system. (Resume d'auteur)", "keywords": ["Fixation de l'azote", "engrais organique", "Nitrogen", "F08 - Syst\u00e8mes et modes de culture", "rendement des cultures", "http://aims.fao.org/aos/agrovoc/c_5192", "Soil fertility", "Zea mays", "Gliricidia sepium", "fertilisation", "http://aims.fao.org/aos/agrovoc/c_16379", "http://aims.fao.org/aos/agrovoc/c_10176", "http://aims.fao.org/aos/agrovoc/c_4592", "Nitrogen fixation", "F01 - Culture des plantes", "Agroforestry", "http://aims.fao.org/aos/agrovoc/c_6970", "Ecosystem", "http://aims.fao.org/aos/agrovoc/c_10795", "azote", "agroforesterie", "2. Zero hunger", "technique des traceurs", "engrais azot\u00e9", "nutrition des plantes", "Agriculture", "04 agricultural and veterinary sciences", "15. Life on land", "http://aims.fao.org/aos/agrovoc/c_207", "Utilization", "http://aims.fao.org/aos/agrovoc/c_8504", "http://aims.fao.org/aos/agrovoc/c_7835", "Fertilization", "http://aims.fao.org/aos/agrovoc/c_3910", "0401 agriculture", " forestry", " and fisheries", "culture intercalaire", "http://aims.fao.org/aos/agrovoc/c_5195", "http://aims.fao.org/aos/agrovoc/c_5196", "http://aims.fao.org/aos/agrovoc/c_3278", "F04 - Fertilisation"], "contacts": [{"organization": "Ndiaye, Mamadou, Ganry, Francis, Oliver, Robert,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1080/08903060050136432"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Arid%20Soil%20Research%20and%20Rehabilitation", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1080/08903060050136432", "name": "item", "description": "10.1080/08903060050136432", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1080/08903060050136432"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2000-01-01T00:00:00Z"}}, {"id": "10.1111/j.1365-2389.2008.01059.x", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-31T06:59:34Z", "type": "Journal Article", "created": "2008-08-27", "title": "Influence Of Land Use (Savanna, Pasture,Eucalyptusplantations) On Soil Carbon And Nitrogen Stocks In Brazil", "description": "Summary<p>In Brazil, mostEucalyptusstands have been planted on Cerrado (shrubby savanna) or on Cerrado converted into pasture. Case studies are needed to assess the effect of such land use changes on soil fertility and C sequestration. In this study, the influence of Cerrado land development (pasture andEucalyptusplantations) on soil organic carbon (SOC) and nitrogen (SON) stocks were quantified in southern Brazil. Two contrasted silvicultural practices were also compared: 60\uffe2\uff80\uff83years of short\uffe2\uff80\uff90rotation silviculture (EUCSR) versus 60\uffe2\uff80\uff83years of continuous growth (EUCHF). C and N soil concentrations and bulk densities were measured and modelled for each vegetation type, and SOC and SON stocks were calculated down to a depth of 1\uffe2\uff80\uff83m by a continuous function.</p><p>Changes in SOC and SON stocks mainly occurred in the forest floor (no litter in pasture and up to 0.87\uffe2\uff80\uff83kg C\uffe2\uff80\uff83m\uffe2\uff88\uff922and 0.01\uffe2\uff80\uff83kg N\uffe2\uff80\uff83m\uffe2\uff88\uff922in EUCSR) and upper soil horizons. C and N stocks and their confidence intervals were greatly influenced by the methodology used to compute these layers. C/N ratio and13C analysis showed that down to a depth of 30\uffe2\uff80\uff83cm, the Cerrado organic matter was replaced by organic matter from newly introduced vegetation by as much as 75\uffe2\uff80\uff93100% for pasture and about 50% for EUCHF, poorer in N forEucalyptusstands (C/N larger than 18 forEucalyptusstands). Under pasture, 0\uffe2\uff80\uff9330\uffe2\uff80\uff83cm SON stocks (0.25\uffe2\uff80\uff83kg N\uffe2\uff80\uff83m\uffe2\uff88\uff922) were between 10 and 20% greater than those of the Cerrado (0.21\uffe2\uff80\uff83kg N\uffe2\uff80\uff83m\uffe2\uff88\uff922), partly due to soil compaction (limit bulk density at soil surface from 1.23 for the Cerrado to 1.34 for pasture). Land development on the Cerrado increased SOC stocks in the 0\uffe2\uff80\uff9330\uffe2\uff80\uff83cm layer by between 15 and 25% (from 2.99 (Cerrado) to 3.86 (EUCSR)\uffe2\uff80\uff83kg C\uffe2\uff80\uff83m\uffe2\uff88\uff922). When including litter layers, total 0\uffe2\uff80\uff9330\uffe2\uff80\uff83cm carbon stocks increased by 35% for EUCHF(4.50\uffe2\uff80\uff83kg C\uffe2\uff80\uff83m\uffe2\uff88\uff922) and 53% for EUCSR(5.08\uffe2\uff80\uff83kg C\uffe2\uff80\uff83m\uffe2\uff88\uff922), compared with the Cerrado (3.28\uffe2\uff80\uff83kg C\uffe2\uff80\uff83m\uffe2\uff88\uff922), independently of soil compaction.</p>", "keywords": ["P33 - Chimie et physique du sol", "sol", "http://aims.fao.org/aos/agrovoc/c_24420", "http://aims.fao.org/aos/agrovoc/c_7071", "http://aims.fao.org/aos/agrovoc/c_5192", "STOCKS ET FLUX", "stockage", "[SDV.SA.SDS]Life Sciences [q-bio]/Agricultural sciences/Soil study", "910", "ORGANIC-MATTER DYNAMICS", "utilisation des terres", "p\u00e2turages", "http://aims.fao.org/aos/agrovoc/c_7427", "MANAGEMENT", "http://aims.fao.org/aos/agrovoc/c_5626", "savane", "http://aims.fao.org/aos/agrovoc/c_1301", "[SDV.SA.SDS] Life Sciences [q-bio]/Agricultural sciences/Soil study", "http://aims.fao.org/aos/agrovoc/c_35657", "azote", "2. Zero hunger", "Eucalyptus", "340", "CONGO", "04 agricultural and veterinary sciences", "15. Life on land", "FOREST", "sylviculture", "K10 - Production foresti\u00e8re", "TREE PLANTATIONS", "CONVERSION", "http://aims.fao.org/aos/agrovoc/c_1070", "13. Climate action", "http://aims.fao.org/aos/agrovoc/c_4182", "AFFORESTATION", "http://aims.fao.org/aos/agrovoc/c_6825", "0401 agriculture", " forestry", " and fisheries", "EASTERN AUSTRALIA", "P01 - Conservation de la nature et ressources fonci\u00e8res", "carbone", "impact sur l'environnement", "plantations", "http://aims.fao.org/aos/agrovoc/c_7156", "http://aims.fao.org/aos/agrovoc/c_5990", "LEAF-LITTER", "STORAGE", "mati\u00e8re organique du sol", "http://aims.fao.org/aos/agrovoc/c_2683"]}, "links": [{"href": "https://doi.org/10.1111/j.1365-2389.2008.01059.x"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/European%20Journal%20of%20Soil%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1111/j.1365-2389.2008.01059.x", "name": "item", "description": "10.1111/j.1365-2389.2008.01059.x", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1111/j.1365-2389.2008.01059.x"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2008-09-15T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=http%3A%2F%2Faims.fao.org%2Faos%2Fagrovoc%2Fc_5192&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=http%3A%2F%2Faims.fao.org%2Faos%2Fagrovoc%2Fc_5192&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=http%3A%2F%2Faims.fao.org%2Faos%2Fagrovoc%2Fc_5192&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=http%3A%2F%2Faims.fao.org%2Faos%2Fagrovoc%2Fc_5192&offset=4", "hreflang": "en-US"}], "numberMatched": 4, "numberReturned": 4, "distributedFeatures": [], "timeStamp": "2026-05-31T13:10:46.908967Z"}