Data/hora: 11/06/2024 07:03:24

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Cerrados.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | A - 1
Data corrente: | 15/03/2016
Data da última atualização: | 15/03/2016
Autoria: | CORBEELS, M.; MARCHAO, R. L.; SIQUEIRA NETO, M.; FERREIRA, E. G.; MADARI, B. E.; SCOPEL, E.; BRITO, O. R.
Afiliação: | MARC CORBEELS, CIRAD; ROBELIO LEANDRO MARCHAO, CPAC; MARCOS SIQUEIRA NETO, USP; ELIANN GARCIA FERREIRA, UEL; BEATA EMOKE MADARI, CNPAF; ERIC SCOPEL, CIRAD; OSMAR RODRIGUES BRITO, UEL.
Título: | Evidence of limited carbon sequestration in soils under no-tillage systems in the Cerrado of Brazil.
Ano de publicação: | 2016
Fonte/Imprenta: | Scientific Reports, n. 6, article 21450, 2016.
DOI: | 10.1038/srep21450
Idioma: | Inglês
Conteúdo: | Abstract: The Brazilian government aims at augmenting the area cropped under no-tillage (NT) from 32 to 40 million ha by 2020 as a means to mitigate CO2 emissions. We estimated soil carbon (C) sequestration under continuous NT systems in two municipalities in the Goiás state that are representative of the Cerrado. A chronosequence of NT fields of different age since conversion from conventional tillage (CT) was sampled in 2003 and 2011. Soil C levels of native Cerrado and pasture were measured for comparison. After about 11 to 14 years, soil C stocks under NT were highest and at the levels of those under natural Cerrado. Average annual rates of soil C sequestration estimated using the chronosequence approach were respectively 1.61 and 1.48 Mg C ha-1 yr-1 for the 2003 and 2011 sampling, and were higher than those observed using repeated sampling after eight years. The diachronic sampling revealed that the younger NT fields tended to show higher increases in soil C stocks than the older fields. Converting an extra 8 million ha of cropland from CT to NT represents an estimated soil C storage of about 8 Tg C yr-1 during 10 to 15 years.
Palavras-Chave: | Emissão de gases; Goiás; Sequestro de carbono.
Thesagro: | Carbono; Cerrado; Plantio direto.
Thesaurus Nal: | Brazil; Carbon sequestration; Gas emissions; No-tillage; Savannas.
Categoria do assunto: | W Química e Física
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/141210/1/Corbeels-et-al-Nat-Sci-Rep.pdf
Registro original: | Embrapa Cerrados (CPAC)

Exemplares:

CPAC - (35298-1) - UPC - AP - PP - S2097 -  - S2097 - DIS
CNPAF - (34147-1) - UPC - AP - DD - 2016 -  - 2016 - DIS