Data/hora: 01/06/2024 00:40:55

Biblioteca(s): | Embrapa Agrossilvipastoril; Embrapa Solos.
Tipo da produção científica: | Artigo em Anais de Congresso
Data corrente: | 15/01/2018
Data da última atualização: | 29/01/2018
Autoria: | MATOS, E. da S.; CONCEIÇÃO, M. C. G. da; BIDONE, E. G.; RODRIGUES, R. de A. R.; CORDEIRO, R. C.
Afiliação: | EDUARDO DA SILVA MATOS, CPAMT; MARCELA C. G. DA CONCEIÇÃO, UFF; EDISON G. BIDONE, UFF; RENATO DE ARAGAO RIBEIRO RODRIGUES, CNPS; RENATO C. CORDEIRO, UFF.
Título: | Soil organic matter fractions as a short-term indicator of carbon turnover under agricultural systems.
Ano de publicação: | 2017
Fonte/Imprenta: | 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.
Idioma: | Inglês
Conteúdo: | 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.
Palavras-Chave: | Agricultura conservacionista; Carbono do solo; Heavy-fraction; Integração lavoura-pecuária-floresta; Integrated crop-livestock-forest; Light-fraction.
Thesaurus Nal: | Agricultural conservation practice; Carbon sequestration.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra

URL:

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/171788/1/2017-cpamt-eduardo-matos-soil-organic-matter-fraction-short-term-indicator.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/item/171043/1/2017-111.pdf

Registro original: | Embrapa Agrossilvipastoril (CPAMT)

Exemplares:

CNPS - (19778-1) - UPC - AA - DD -  -  - 2018.00045 - DIS
CPAMT - (934-1) - UPC - AA - DD -  -  -  - DIS