Integrated farming systems for improving soil carbon balance in the southern Amazon of Brazil

被引:29
|
作者
Oliveira, Janaina de Moura [1 ,2 ]
Madari, Beata Emoke [1 ]
de Melo Carvalho, Marcia Thais [1 ]
Ramos Assis, Paula Camylla [1 ,2 ]
Rodrigues Silveira, Andre Luiz [1 ,2 ]
Lima, Mateus de Leles [1 ,2 ]
Wruck, Flavio Jesus [1 ]
Medeiros, Joao Carlos [1 ,3 ]
Oliveira de Almeida Machado, Pedro Luiz [1 ]
机构
[1] Embrapa Arroz & Feijao, Rodovia GO 462,Km 12 S-N, BR-75375000 Santo Antonio De Goias, Go, Brazil
[2] Univ Fed Goias, Goiania, Go, Brazil
[3] Univ Fed Piaui, Bom Jesus, Piaui, Brazil
关键词
Integrated crop-livestock-forestry (ICLF); Total soil organic carbon (SOC); Total soil N; delta C-13; Pasture; Eucalyptus spp; CROP-LIVESTOCK SYSTEMS; COFFEE AGROFORESTRY SYSTEMS; ORGANIC-MATTER; STRATIFICATION RATIO; MATO-GROSSO; STOCKS; SEQUESTRATION; ATTRIBUTES; PASTURE; CONSERVATION;
D O I
10.1007/s10113-017-1146-0
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Integrated farming systems (IS) are one of the main strategies of the Brazilian government to reduce or compensate for carbon emissions from agriculture with simultaneous improvement in production efficiency. The IS are agricultural production systems that combine crop, livestock and forestry activities in the same area. The aim of this study was to address soil organic carbon (SOC) stocks under two agriculture areas with IS, in comparison with one exclusively used as low-input pasture (Pasture). The IS consisted of growing forestry species (Eucalyptus urograndis) simultaneously with soybean (Glycine max) and aerobic rice (Oryza sativa) for 2 years when grain crops were followed by palisade grass (Urochloa bryzantha). The study was carried out in real farm conditions in the southern Amazon ecosystem, north of Mato Grosso State, Brazil. SOC stocks were measured to 1 m soil depth. Compared to Pasture, areas of higher SOC stocks were identified in IS under the tree lines below 0.3 m, where there was no soil N deficiency. Our results indicated that, under the local edaphic and climatic conditions of the study, IS with trees can promote SOC accumulation even in a short term, such as 3 years in this case study, if soil fertility constraints do not exist.
引用
收藏
页码:105 / 116
页数:12
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