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 %.
Main Authors: | , , , , , |
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Other Authors: | |
Format: | Separatas biblioteca |
Language: | English eng |
Published: |
2016-08-24
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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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