{"type": "FeatureCollection", "features": [{"id": "10.1016/j.agee.2008.09.006", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:15:11Z", "type": "Journal Article", "created": "2008-11-15", "title": "Biodiversity, Carbon Stocks And Sequestration Potential In Aboveground Biomass In Smallholder Farming Systems Of Western Kenya", "description": "Abstract   While Carbon (C) sequestration on farmlands may contribute to mitigate CO 2  concentrations in the atmosphere, greater agro-biodiversity may ensure longer term stability of C storage in fluctuating environments. This study was conducted in the highlands of western Kenya, a region with high potential for agroforestry, with the objectives of assessing current biodiversity and aboveground C stocks in perennial vegetation growing on farmland, and estimating C sequestration potential in aboveground C pools. Allometric models were developed to estimate aboveground biomass of trees and hedgerows, and an inventory of perennial vegetation was conducted in 35 farms in Vihiga and Siaya districts. Values of the Shannon index ( H ), used to evaluate biodiversity, ranged from 0.01 in woodlots through 0.4\u20130.6 in food crop plots, to 1.3\u20131.6 in homegardens.  Eucalyptus saligna  was the most frequent tree species found as individual trees (20%), in windrows (47%), and in woodlots (99%) in Vihiga and the most frequent in woodlots (96%) in Siaya. Trees represented the most important C pool in aboveground biomass of perennial plants growing on-farm, contributing to 81 and 55% of total aboveground farm C in Vihiga and Siaya, respectively, followed by hedgerows (13 and 39%, respectively) and permanent crop stands (5 and 6%, respectively). Most of the tree C was located in woodlots in Vihiga (61%) and in individual trees growing in or around food crop plots in Siaya (57%). The homegardens represented the second C pool in importance, with 25 and 33% of C stocks in Vihiga and Siaya, respectively. Considering the mean total aboveground C stocks observed, and taking the average farm sizes of Vihiga (0.6\u00a0ha) and Siaya (1.4\u00a0ha), an average farm would store 6.5\u00a0\u00b1\u00a00.1\u00a0Mg\u00a0C\u00a0farm \u22121  in Vihiga and 12.4\u00a0\u00b1\u00a00.1\u00a0Mg\u00a0C\u00a0farm \u22121  in Siaya. At both sites, the C sequestration potential in perennial aboveground biomass was estimated at ca. 16\u00a0Mg\u00a0C\u00a0ha \u22121 . With the current market price for carbon, the implementation of Clean Development Mechanism Afforestation/Reforestation (CDM A/R) projects seems unfeasible, due to the large number of small farms (between 140 and 300) necessary to achieve a critical land area able to compensate the concomitant minimum transaction costs. Higher financial compensation for C sequestration projects that encourage biodiversity would allow clearer win\u2013win scenarios for smallholder farmers. Thus, a better valuation of ecosystem services should encourage C sequestration together with on-farm biodiversity when promoting CDM A/R projects.", "keywords": ["550", "petite exploitation agricole", "DIVERSITE SPECIFIQUE", "EXPLOITATION AGRICOLE", "01 natural sciences", "agroforestry", "eucalyptus saligna", "biodiversit\u00e9", "sistemas de explotaci\u00f3n", "STOCKAGE", "allocation", "soil fertility management", "agroforesterie", "2. Zero hunger", "Eucalyptus", "arbre", "AGROFORESTERIE", "http://aims.fao.org/aos/agrovoc/c_33949", "trees", "04 agricultural and veterinary sciences", "VILLAGE", "CARBONE", "http://aims.fao.org/aos/agrovoc/c_207", "s\u00e9questration du carbone", "agroforestry systems", "http://aims.fao.org/aos/agrovoc/c_4182", "P01 - Conservation de la nature et ressources fonci\u00e8res", "ecology", "agroforesteria", "UTILISATION DU SOL", "environment", "http://aims.fao.org/aos/agrovoc/c_2683", "570", "BIOMETRIE", "productivity", "arboles", "REFORESTATION", "secuestro de carbono", "utilisation des terres", "ARBRE", "http://aims.fao.org/aos/agrovoc/c_7887", "farming systems", "http://aims.fao.org/aos/agrovoc/c_1301", "0105 earth and related environmental sciences", "forests", "BIOMASSE", "BIODIVERSITE", "SYSTEME DE CULTURE", "15. Life on land", "carbon sequestration", "http://aims.fao.org/aos/agrovoc/c_331583", "COMPOSITION FLORISTIQUE", "http://aims.fao.org/aos/agrovoc/c_4086", "13. Climate action", "0401 agriculture", " forestry", " and fisheries", "carbone", "http://aims.fao.org/aos/agrovoc/c_7113"]}, "links": [{"href": "https://doi.org/10.1016/j.agee.2008.09.006"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Agriculture%2C%20Ecosystems%20%26amp%3B%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.agee.2008.09.006", "name": "item", "description": "10.1016/j.agee.2008.09.006", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.agee.2008.09.006"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2009-01-01T00:00:00Z"}}, {"id": "10.1590/s0100-204x2000000100018", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:19:42Z", "type": "Journal Article", "created": "2007-10-04", "title": "N\u00edvel E Natureza Do Estoque Org\u00e2nico De Latossolos Sob Diferentes Sistemas De Uso E Manejo", "description": "<p>O papel fundamental da mat\uffc3\uffa9ria org\uffc3\uffa2nica (MO) justifica o crescente interesse pela identifica\uffc3\uffa7\uffc3\uffa3o de sistemas de uso e manejo que melhorem o estoque org\uffc3\uffa2nico em solos tropicais. O objetivo deste trabalho foi analisar varia\uffc3\uffa7\uffc3\uffb5es quantitativas e qualitativas da MO e caracterizar compartimentos org\uffc3\uffa2nicos em um Latossolo Vermelho-Escuro argiloso sob vegeta\uffc3\uffa7\uffc3\uffa3o natural antropizada (CER), pastagem de longa dura\uffc3\uffa7\uffc3\uffa3o (PAL), pastagem degradada (PAD), e pousio (PAC), comparados com culturas sob preparo convencional (CCL) e plantio direto (PD). Foi encontrada pouca varia\uffc3\uffa7\uffc3\uffa3o dos estoques org\uffc3\uffa2nicos na camada superficial, explicada pela antropiza\uffc3\uffa7\uffc3\uffa3o da vegeta\uffc3\uffa7\uffc3\uffa3o em CER, pela n\uffc3\uffa3o-exporta\uffc3\uffa7\uffc3\uffa3o dos res\uffc3\uffadduos em PD e CCL e pela pr\uffc3\uffa1tica de pousio em PAC. Fracionamento granulom\uffc3\uffa9trico, considerando os compartimentos: res\uffc3\uffadduos vegetais (20-2.000 \uffc2\uffb5m), organo-siltoso (2-20 \uffc2\uffb5m) e organo-argiloso (0-2 \uffc2\uffb5m), mostrou diferen\uffc3\uffa7as na qualidade da MO quando comparadas situa\uffc3\uffa7\uffc3\uffb5es edafoambientais semelhantes. Mesmo com pequenas varia\uffc3\uffa7\uffc3\uffb5es, o compartimento res\uffc3\uffadduos vegetais foi um indicador da evolu\uffc3\uffa7\uffc3\uffa3o dos estoques org\uffc3\uffa2nicos, permitindo a caracteriza\uffc3\uffa7\uffc3\uffa3o da degrada\uffc3\uffa7\uffc3\uffa3o nas pastagens e do efeito do plantio direto, quando comparado ao sistema convencional. PD favoreceu a estocagem de C no compartimento organo-argiloso. Solos estudados diferem de outros solos argilosos tropicais pela mais elevada rela\uffc3\uffa7\uffc3\uffa3o C/N encontrada nas fra\uffc3\uffa7\uffc3\uffb5es 0-20 \uffc2\uffb5m.</p>", "keywords": ["Agriculture (General)", "SAVANE", "LATOSOL", "01 natural sciences", "mat\u00e9ria org\u00e2nica", "S1-972", "pastagens", "ANALYSE QUALITATIVE", "ANALYSE QUANTITATIVE", "zero tillage", "Latossolo Vermelho-Escuro", "organic matter", "0105 earth and related environmental sciences", "solos argilosos", "SOL", "Cerrados", "MATIERE ORGANIQUE", "SYSTEME DE CULTURE", "PATURAGE", "04 agricultural and veterinary sciences", "organic compartments", "clayey soils", "15. Life on land", "GRANULOMETRIE", "granulometric fraction", "JACHERE", "Dark-Red Latosol", "pasture", "STOCK ORGANIQUE", "plantio direto", "acid savannas (Cerrados)", "0401 agriculture", " forestry", " and fisheries", "compartimentos org\u00e2nicos", "VEGETATION", "UTILISATION DU SOL", "SOL ARGILEUX", "fra\u00e7\u00e3o granulom\u00e9trica"], "contacts": [{"organization": "Freitas, P. L. de, /Blancaneaux, Philippe, /Gavinelli, Evelyne, /Larr\u00e9 Larrouy, Marie-Christine, /Feller, Christian,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1590/s0100-204x2000000100018"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Pesquisa%20Agropecu%C3%A1ria%20Brasileira", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1590/s0100-204x2000000100018", "name": "item", "description": "10.1590/s0100-204x2000000100018", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1590/s0100-204x2000000100018"}, {"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"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=SYSTEME+DE+CULTURE&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=SYSTEME+DE+CULTURE&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=SYSTEME+DE+CULTURE&", "hreflang": "en-US"}, {"rel": "last", "type": "application/geo+json", "title": "items (last)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=SYSTEME+DE+CULTURE&offset=2", "hreflang": "en-US"}], "numberMatched": 2, "numberReturned": 2, "distributedFeatures": [], "timeStamp": "2026-05-26T00:13:11.105833Z"}