干旱区生态环境知识资源中心(Arid): Soil organic carbon temperature sensitivity of different soil types and land use systems in the Brazilian semi-arid region

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DOI	10.1111/sum.12508
	Soil organic carbon temperature sensitivity of different soil types and land use systems in the Brazilian semi-arid region
	Ferreira Maia, Stoecio Malta 1; Medeiros Gonzaga, Giordano Bruno 2; dos Santos Silva, Leilane Kristine 1; Lyra, Guilherme Bastos 2; de Araujo Gomes, Tamara Claudia 3
通讯作者	Ferreira Maia, Stoecio Malta
来源期刊	SOIL USE AND MANAGEMENT
ISSN	0266-0032
EISSN	1475-2743
出版年	2019
卷号	35 期号:3 页码:433-442
英文摘要	Quantifying the sensitivity of soil organic matter decomposition (SOM) to global warming is critical for predict future impacts of climate change on soil organic carbon stocks (SOC) and soil respiration, especially in semi-arid regions such as north-eastern Brazil, where SOC stocks are naturally small. In this study, the responses of the labile and recalcitrant carbon components and soil respiration dynamics were evaluated in three different soil types and land use systems (native vegetation, cropland and pasture) of the Brazilian semi-arid region, when submitted to temperature increase. After 169 days of incubation, the results showed that an increase of 5 degrees C generated an average increase in CO2 emission of 12.0%, but which could reach 28.1%. Overall, the labile carbon (LC) in areas of native vegetation showed greater sensitivity to temperature than in cropland areas. It was also observed that recalcitrant carbon (RC) was more sensitive to warming than LC. Our results indicate that Brazil's semi-arid region presents a substantial vulnerability to global warming, and that the sensitivity of RC and of LC in areas of native vegetation to warming can enhance SOC losses, contributing to positive feedback on climate change, and compromising the productive systems of the region. However, further studies evaluating other types of soil and texture and management systems should be carried out to consolidate the results obtained and to improve the understanding about SOM decomposition in the Brazilian semi-arid region.
英文关键词	global warming labile carbon Q(10) recalcitrant carbon soil respiration
类型	Article
语种	英语
国家	Brazil
收录类别	SCI-E
WOS记录号	WOS:000486007200007
WOS关键词	MATTER DECOMPOSITION ; MICROBIAL RESPIRATION ; QUALITY ; STABILIZATION ; GRADIENT ; MOISTURE ; MECHANISMS ; LABILE ; RATES ; YOUNG
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218888
作者单位	1.Inst Fed Educ Ciencia & Tecnol Alagoas, Marechal Deodoro, Alagoas, Brazil; 2.Univ Fed Alagoas, Ctr Ciencias Agr, Rio Largo, Alagoas, Brazil; 3.Embrapa Tabuleiros Costeiros, Unidade Execucao Pesquisa & Desenvolvimento, Rio Largo, Alagoas, Brazil
推荐引用方式 GB/T 7714	Ferreira Maia, Stoecio Malta,Medeiros Gonzaga, Giordano Bruno,dos Santos Silva, Leilane Kristine,et al. Soil organic carbon temperature sensitivity of different soil types and land use systems in the Brazilian semi-arid region[J],2019,35(3):433-442.
APA	Ferreira Maia, Stoecio Malta,Medeiros Gonzaga, Giordano Bruno,dos Santos Silva, Leilane Kristine,Lyra, Guilherme Bastos,&de Araujo Gomes, Tamara Claudia.(2019).Soil organic carbon temperature sensitivity of different soil types and land use systems in the Brazilian semi-arid region.SOIL USE AND MANAGEMENT,35(3),433-442.
MLA	Ferreira Maia, Stoecio Malta,et al."Soil organic carbon temperature sensitivity of different soil types and land use systems in the Brazilian semi-arid region".SOIL USE AND MANAGEMENT 35.3(2019):433-442.