Soil carbon stock and Plinthosol fertility in smallholder land-use systems in the eastern Amazon, Brazil
| Autor: | Michel Brossard, Jhonatan Andrés Muñoz Gutiérrez, Altamiro Souza de Lima Ferraz Junior, Sandra Oliveira Sá, Heder Braun, Ceália Cristine Santos, Max Sarrazin, Thierry Desjardins |
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| Přispěvatelé: | Universidade Federal Do Maranhão, Partenaires INRAE, Institut de Recherche pour le Développement (IRD [Réunion]), Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (UMR Eco&Sols), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA), Institut d'écologie et des sciences de l'environnement de Paris (iEES), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Recherche Agronomique (INRA), FAPEMA (Foundation to Support Research and Scientific and Technological Development of Maranhão), CAPES (Coordination for the Improvement of Higher Education Personnel), GUYAMAZON program (Brazilian–French cooperation program), Universidade Federal do Maranhão = Federal University of Maranhão (UFMA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
2. Zero hunger
Soil organic matter 010504 meteorology & atmospheric sciences Land use Amazon rainforest Agroforestry [SDV]Life Sciences [q-bio] Secondary forest Land-use change 04 agricultural and veterinary sciences Soil carbon 15. Life on land 01 natural sciences Ecosystem services Shifting cultivation [SDE]Environmental Sciences 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science Land use land-use change and forestry Soil fertility Mixed fallows 0105 earth and related environmental sciences General Environmental Science |
| Zdroj: | Carbon Management Carbon Management, 2018, 9 (6), pp.655-664. ⟨10.1080/17583004.2018.1530026⟩ |
| ISSN: | 1758-3004 |
| Popis: | International audience; The soil organic carbon (SOC) stock is an important attribute in the maintenance of ecosystem services by natural and agricultural ecosystems. In the humid tropics, slash-and-burn cultivation for food production and establishment of pastures has frequently led to soil degradation. In the eastern Brazilian Amazonia, we assessed impacts of different land-use systems on the SOC stock and some chemical properties of soils. Four land-use systems were studied: shifting cultivation (SC), pasture (PA), mixed fallow (MF) and secondary forest (SF). In the soils studied, most nutrients were not significantly influenced by land-use changes, and the chemical fertility was low. Similarly, SOC concentration was low, ranging, in the 0-10 cm layer, from 9.54 g kg−1 in PA to 12.73 g kg−1 in MF. In the 0-100 cm layer, the SOC stock varied from 42.1 Mg ha-1 in SC to 53.3 Mg ha−1 in MF, without significant differences between the land-use systems. The SOC stock in the 0-30 cm layer represented 50-56% of that in the 0-100 cm layer. The soils studied have the lowest SOC stocks measured in the Amazonia region. The low organic matter content, associated with soil acidity, a small sum of exchangeable bases and low extractable P, can constrain the productivity and the sustainability of these cropping systems. |
| Databáze: | OpenAIRE |
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