干旱区生态环境知识资源中心(Arid): Soil organic carbon fractions and humic substances are affected by land uses of Caatinga forest in Brazil

Arid

DOI	10.1080/15324982.2018.1555871
	Soil organic carbon fractions and humic substances are affected by land uses of Caatinga forest in Brazil
	dos Santos, Uemeson Jose 1; Duda, Gustavo Pereira 2; Marques, Marise Conceicao 2; de Medeiros, Erika Valente 2; de Sousa Lima, Jose Romualdo 2; de Souza, Eduardo Soares 2; Brossard, Michel 3; Hammecker, Claude 3
通讯作者	dos Santos, Uemeson Jose
来源期刊	ARID LAND RESEARCH AND MANAGEMENT
ISSN	1532-4982
EISSN	1532-4990
出版年	2019
卷号	33 期号:3 页码:255-273
英文摘要	Caatinga is a Brazilian dry ecosystem that occupies around 1 million km(2) and is one of the largest tropical dry forests of the world. About 46% of the area that was originally covered has been deforested. Land use can cause pronounced reduction in soil carbon stocks that play a major role in the global carbon cycle. The objective of this study was to improve our understanding of the effect of land use on oxidizable carbon fractions, total carbon stocks and humic substances in different layers of soil in a Brazilian semi-arid region. We analyzed soils from tropical dry forest (TDF), forest succession with Anadenanthera falcata (ANA), with Tabebuia alba (TAB), secondary scrubby regeneration (SCR), and non-irrigated maize (MS). Forests showed larger fractions of more labile carbon, except for TDF. The most recalcitrant fraction of carbon stock, humin fraction stock, with the different land use decreased by 38-53% compared to TDF. Oxidizable carbon fractions, carbon stocks, and humic fraction stocks were able to differentiate the successional land uses and agricultural cover from TDF, mainly in the 0-5 cm layer. Our results show that changes in land use, especially with ANA forest succession, showed a larger labile carbon fraction, indicating easy decomposition and loss. Our results provide an alternative tool for the management of deforested areas in tropical dry caatinga ecosystems. This would contribute to the conservation of dry forest systems and could serve as guideline for sustainable management of agriculturally impacted caatinga areas.
英文关键词	Carbon cycle labile carbon semi-arid total carbon stock tropical dry forest
类型	Article
语种	英语
国家	Brazil ; France
收录类别	SCI-E
WOS记录号	WOS:000467749700002
WOS关键词	MICROBIAL COMMUNITY ; LOESS PLATEAU ; ENZYME-ACTIVITIES ; MATTER FRACTIONS ; SEMIARID REGION ; NITROGEN STOCKS ; ATLANTIC FOREST ; DRY FOREST ; POOLS ; RESTORATION
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
来源机构	French National Research Institute for Sustainable Development
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/214395
作者单位	1.Rural Univ Pernambuco, Master Agr Prod Sci, Garanhuns, Brazil; 2.Fed Rural Univ, Acad Unit Garanhuns, Garanhuns, Brazil; 3.IRD, UMR Eco & Sol, Montpellier, France
推荐引用方式 GB/T 7714	dos Santos, Uemeson Jose,Duda, Gustavo Pereira,Marques, Marise Conceicao,et al. Soil organic carbon fractions and humic substances are affected by land uses of Caatinga forest in Brazil[J]. French National Research Institute for Sustainable Development,2019,33(3):255-273.
APA	dos Santos, Uemeson Jose.,Duda, Gustavo Pereira.,Marques, Marise Conceicao.,de Medeiros, Erika Valente.,de Sousa Lima, Jose Romualdo.,...&Hammecker, Claude.(2019).Soil organic carbon fractions and humic substances are affected by land uses of Caatinga forest in Brazil.ARID LAND RESEARCH AND MANAGEMENT,33(3),255-273.
MLA	dos Santos, Uemeson Jose,et al."Soil organic carbon fractions and humic substances are affected by land uses of Caatinga forest in Brazil".ARID LAND RESEARCH AND MANAGEMENT 33.3(2019):255-273.