Carbon Stocks in Compartments of Soil Organic Matter 31 Years after Substitution of Native Cerrado Vegetation by Agroecosystems.

ABSTRACT: Changes in carbon stocks in different compartments of soil organic matter of a clayey Latossolo Vermelho Distrófico (Typic Haplustox), caused by the substitution of native savanna vegetation (cerrado sensu stricto) by agroecosystems, were assessed after 31 years of cultivation. Under native vegetation, a stock of 164.5 Mg ha-1 C was estimated in the 0.00-1.00 m layer. After 31 years of cultivation, these changes in soil C stocks were detected to a depth of 0.60 m. In the case of substitution of cerrado sensu stricto by no-tillage soybean-corn rotation, a reduction of at least 11 % of the soil C pools was observed. However, the adoption of no-tillage as an alternative to tillage with a moldboard plow (conventional system) reduced CO2 emissions by up to 12 %.

Bibliographic Details

Main Authors:	FERREIRA, E. A. B., BUSTAMANTE, M. M. da C., RESCK, D. V. S., FIGUEIREDO, C. C. de, PINTO, A. de S., MALAQUIAS, J. V.
Other Authors:	ELOISA APARECIDA BELLEZA FERREIRA, CPAC; MERCEDES MARIA DA CUNHA BUSTAMANTE, UNB; DIMAS VITAL SIQUEIRA RESCK, CPAC; CÍCERO CÉLIO DE FIGUEIREDO, UNB; ALEXANDRE DE SIQUEIRA PINTO, UFSE; JUACI VITORIA MALAQUIAS, CPAC.
Format:	Separatas biblioteca
Language:	English eng
Published:	2016-08-24
Subjects:	Preparo convencional, Biomassa microbiana, Matéria orgânica particulada, Plantio direto, Cerrado, Solo,
Online Access:	http://www.alice.cnptia.embrapa.br/alice/handle/doc/1051538
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