气候变化领域集成服务门户(CCPortal): Changing the land use from degraded pasture into integrated farming systems enhance soil carbon stocks in the Cerrado biome

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DOI	10.4025/actasciagron.v46i1.63601
	Changing the land use from degraded pasture into integrated farming systems enhance soil carbon stocks in the Cerrado biome
	de Freitas, Igor Costa; Alves, Matheus Almeida; Pena, Arlen Nicson Lopes; Ferreira, Evander Alves; Frazao, Leidivan Almeida
发表日期	2024
ISSN	1679-9275
EISSN	1807-8621
起始页码	46
卷号	46
英文摘要	. Integrated agricultural production systems can increase soil organic carbon stocks over time and contribute to the mitigation of climate change. The present study aimed to evaluate soil carbon stocks, accumulation rates (TOC), total nitrogen (TN), and the quality of soil organic matter (SOM) after the transition of a low-productivity pasture into agrosilvopastoral systems in the Cerrado biome. We evaluated an 11-year-old experiment, and the treatments studied were: Eucalyptus + buffel grass; Eucalyptus + cowpea; Eucalyptus + pigeon pea; eucalyptus + buffel grass + cowpea; Eucalyptus + buffel grass + pigeon pea; Eucalyptus in monoculture (with a 20 x 3 m tree arrangement and no cultivation between rows but with a history of forage and grain crop production); and a low-productivity pasture as additional treatment and reference to the soil condition previously the land-use change. In this study, TOC and TN stocks and accumulation, labile (LC) and non-labile carbon (NLC), and SOM humic fractions were evaluated at 0-10, 10-20, 20-40, and 0-40 cm depth layers. Integrated farming systems have increased TOC and TN, NLC, carbon contents and stocks in SOM chemical fractions in all depths and TOC and TN accumulation of 5.22 Mg ha-1 year-1 and 0.23 Mg ha-1 year-1, respectively, at the 0-40 cm depth layer. The integration of Eucalyptus with legumes or buffel grass increased the LC content in the surface layer of the soil. The transition from low-productivity pasture into integrated farming systems can promote the recovery of SOM and soil quality. Hence, our results suggest that agrosilvopastoral systems can be used as sustainable farming systems in the Cerrado biome.
英文关键词	agrosilvopastoral system; labile carbon; humic substances; soil organic matter; legumes; buffel grass
语种	英语
WOS研究方向	Agriculture
WOS类目	Agronomy
WOS记录号	WOS:001124822700001
来源期刊	ACTA SCIENTIARUM-AGRONOMY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301896
作者单位	Universidade Federal de Minas Gerais
推荐引用方式 GB/T 7714	de Freitas, Igor Costa,Alves, Matheus Almeida,Pena, Arlen Nicson Lopes,et al. Changing the land use from degraded pasture into integrated farming systems enhance soil carbon stocks in the Cerrado biome[J],2024,46.
APA	de Freitas, Igor Costa,Alves, Matheus Almeida,Pena, Arlen Nicson Lopes,Ferreira, Evander Alves,&Frazao, Leidivan Almeida.(2024).Changing the land use from degraded pasture into integrated farming systems enhance soil carbon stocks in the Cerrado biome.ACTA SCIENTIARUM-AGRONOMY,46.
MLA	de Freitas, Igor Costa,et al."Changing the land use from degraded pasture into integrated farming systems enhance soil carbon stocks in the Cerrado biome".ACTA SCIENTIARUM-AGRONOMY 46(2024).