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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Soil organic matter fractions as a short-term indicator of carbon turnover under agricultural systems.
Autores:  MATOS, E. da S.
CONCEIÇÃO, M. C. G. da
BIDONE, E. G.
RODRIGUES, R. de A. R.
CORDEIRO, R. C.
Data:  2018-01-15
Ano:  2017
Palavras-chave:  Agricultura conservacionista
Integração lavoura-pecuária-floresta
Carbono do solo
Resumo:  Integrated crop-livestock-forest (ICLF) systems has been considered as an important strategy to enhance C sequestration. However, changes in soil C due to agricultural management practices, in general, are observed in long-term experiments. Our objective was to investigate short-term impacts on soil organic matter under different management systems in the Cerrado/Amazonia region. Treatments corresponded to ICLF, No-tillage, Pasture and Eucalyptus plantation. Soil was sampled in 2014, in the 0-5, 5-10 and 10-30 cm layers for quantification of light- and heavy-fraction C stocks as well as their C isotopic composition (DELTA 13C). After three years established, all evaluated treatments showed similar values of light- and heavy-fraction C stocks to those observed under Native Forest in the 0-30 cm layer. Under Pasture and ILCF treatments, we observed that most of C of the light-fraction was substituted by pasturederived C in the uppermost soil layer (0-5 cm). Despite no differences in heavyand light-fraction C, the application of 13C stable isotope technique seems to be an important tool to evaluate short-term C turnover under agricultural systems.

bitstream/item/171043/1/2017-111.pdf
Tipo:  Artigo em anais de congresso (ALICE)
Idioma:  Inglês
Identificador:  19778

http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085351
Editor:  In: ENCONTRO BRASILEIRO DE SUBSTÂNCIAS HÚMICAS E MATÉRIA ORGÂNICA NATURAL, 12., 2017, Sinop. Matéria orgânica e suas múltiplas funcionalidades: livro de resumos. Sinop: [s.n.], 2017. p. 128-131.
Relação:  Embrapa Solos - Artigo em anais de congresso (ALICE)
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