干旱区生态环境知识资源中心(Arid): Soil loss as a desertification risk indicator: mapping and simulation in the Salitre River Sub-Basin, Northeast Brazil

Arid

DOI	10.36783/18069657rbcs20190159
	Soil loss as a desertification risk indicator: mapping and simulation in the Salitre River Sub-Basin, Northeast Brazil
	Rios, Marcio Lima 1; Pereira da Silva, Alisson Jadavi 2; Carvalho-Santos, Vagson Luiz 3
通讯作者	Rios, Marcio Lima
来源期刊	REVISTA BRASILEIRA DE CIENCIA DO SOLO
ISSN	0100-0683
出版年	2020
卷号	44
英文摘要	Discussions on desertification frequently highlight soil erosion as a striking feature of this phenomenon. In particular, the high spatial density of gullies represents a strong indication of the formation of desertification hotspots. In this study, through field activities and Monte Carlo simulations, we estimated the volume of soil loss by linear erosion on the slopes of the middle course of the Salitre river in the North of Bahia State. This estimative contributes to the recognition of a desertification process in the studied local. The lengths of the gullies and rills, visible through high-spatial-resolution satellite images, were vectorized. The width and depth of the Linear Erosion Features (LEFs) were measured through field study and recorded via geoprocessing. Statistical treatment was applied to the data to indicate the probability of occurrence of the width and depth classes. Subsequently, the Monte Carlo simulation was used to indicate the volume of soil removed from the slopes by the linear erosion process. Several ramified systems of LEFs are identified and mapped. Monte Carlo simulation fits the measured data well. Estimates indicate that linear erosion event eroded approximately 450,000 m(3) of soil in an area of 2,000 hectares, which indicates extreme land degradation.
英文关键词	soil erosion geoprocessing Monte Carlo method Gullies
类型	Article
语种	英语
国家	Brazil
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000540017400001
WOS关键词	GULLY EROSION ; ENVIRONMENTAL REFUGEES ; RUNOFF ; AREAS ; DEGRADATION ; CATCHMENT ; HIGHLANDS ; HOTSPOTS ; SYSTEMS ; SLOPES
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/2XILL650/318496
作者单位	1.Univ Fed Minas Gerais, Inst Geociencias, Programa Posgrad Geog, Belo Horizonte, MG, Brazil; 2.Inst Fed Educ Ciencia & Tecnol Baiano, Governador Mangabeira, BA, Brazil; 3.Univ Fed Vicosa, Dept Fis, Vicosa, MG, Brazil
推荐引用方式 GB/T 7714	Rios, Marcio Lima,Pereira da Silva, Alisson Jadavi,Carvalho-Santos, Vagson Luiz. Soil loss as a desertification risk indicator: mapping and simulation in the Salitre River Sub-Basin, Northeast Brazil[J],2020,44.
APA	Rios, Marcio Lima,Pereira da Silva, Alisson Jadavi,&Carvalho-Santos, Vagson Luiz.(2020).Soil loss as a desertification risk indicator: mapping and simulation in the Salitre River Sub-Basin, Northeast Brazil.REVISTA BRASILEIRA DE CIENCIA DO SOLO,44.
MLA	Rios, Marcio Lima,et al."Soil loss as a desertification risk indicator: mapping and simulation in the Salitre River Sub-Basin, Northeast Brazil".REVISTA BRASILEIRA DE CIENCIA DO SOLO 44(2020).