Soil carbon stock changes under different land uses in the Amazon

Autor(es)

Rittl, Tatiana F. ^{[1, 2]} ; Oliveira, Daniele ^[1] ; Cerri, Carlos E. P. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Luiz de Queiroz Coll Agr, Dept Soil Sci, Sao Paulo - Brazil

^[2] Karlsruhe Inst Technol, Atmospher Environm Res IMK IFU, Inst Meteorol & Climate Res, Garmisch Partenkirchen - Germany

• Tipo de documento: Artigo Científico
• Fonte: GEODERMA REGIONAL; v. 10, p. 138-143, SEP 2017.
• Citações Web of Science: 8

Resumo

Historically, the Amazon region has been undergoing significant land use changes due to the introduction of cattle ranching. However, over the few last years, soybean plantations have increased in importance, with consequences for soil organic carbon (SOC) stocks. We measured the SOC stock changes in a chronosequence of native forest, pasture and soybean sites established during different periods on a farm in Rondonia State (Brazilian Amazon). The native forest was converted to pasture and later to soybean. The pasture sites were 11, 15 and 26 years old, while the soybean sites were one (two sites) and 3 years old. SOC stocks (0 to 0.3 m) of the native forest and the six sites were measured for comparison. Overall SOC stocks (up to 0.3 m depth) did not change when forest was converted to pasture. While the overall SOC stock quickly decreased immediately after the pasture was converted to soybean. This information about the increase (pasture) or immediate decrease (pasture-soybean) of SOC stocks after conversion from forest to agricultural areas is important for future studies on soil C dynamics. (AU)

• Processo FAPESP: 15/10108-9 - Efeitos da aplicação de biocarvão sobre o estoque de carbono e fertilidade do solo em condições de laboratório e de campo sob clima tropical
• Beneficiário: Tatiana Francischinelli Rittl
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 14/21273-8 - Potencial de sequestro de carbono no solo e dinâmica da matéria orgânica em pastagens degradadas no Brasil
• Beneficiário: Daniele Costa de Oliveira
• Modalidade de apoio: Bolsas no Brasil - Doutorado