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

被引：14

作者：

Belleza Ferreira, Eloisa Aparecida ^{[1
]}

da Cunha Bustamante, Mercedes Maria ^{[2
]}

Siqueira Resck, Dimas Vital ^{[1
]}

de Figueiredo, Cicero Celio ^{[3
]}

Pinto, Alexandre de Siqueira ^{[4
]}

Malaquias, Juaci Vitoria ^{[1
]}

机构：

[1] Empresa Brasileira Pesquisa Agr, Embrapa Cerrados, Planaltina, DF, Brazil

[2] Univ Brasilia, Inst Biol, Campus Univ Darcy Ribeiro, Brasilia, DF, Brazil

[3] Univ Brasilia, Fac Agron & Vet, Campus Univ Darcy Ribeiro, Brasilia, DF, Brazil

[4] Univ Fed Sergipe, Campus Aracaju, Aracaju, Sergipe, Brazil

来源：

REVISTA BRASILEIRA DE CIENCIA DO SOLO | 2016年 / 40卷

关键词：

conventional tillage; no-tillage; microbial biomass; particulate organic matter; LAND-USE CHANGE; EXTRACTION METHOD; CROP-ROTATION; C-13; NMR; TILLAGE; DYNAMICS; OXISOL; FRACTIONS; TURNOVER; SYSTEMS;

D O I：

10.1590/18069657rbcs20150059

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Changes in carbon stocks in different compartments of soil organic matter of a clayey Latossolo Vermelho Distrofico (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 %.

引用

页数：15

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