干旱区生态环境知识资源中心(Arid): Idenitifying active erosion areas and areas at risk by remote sensing : an example in a badlands landscape on marls in teh Central Spanish Pyenees

Arid

DOI	10.18172/cig.1217
	Idenitifying active erosion areas and areas at risk by remote sensing : an example in a badlands landscape on marls in teh Central Spanish Pyenees
	Alatorre, L. C.; Begueria, S.
通讯作者	Alatorre, LC
来源期刊	CUADERNOS DE INVESTIGACION GEOGRAFICA
ISSN	0211-6820
EISSN	1697-9540
出版年	2009
卷号	35 期号:2 页码:171-194
英文摘要	The identification of eroded areas at catchment scale can be very useful for environmental planning and can help to reduce land degradation and sediment yield. In this paper remote sensing techniques are used to discriminate both eroded areas and erosion risk areas in a badlands landscape developed on Eocene marls, in the Esera River catchment (Spanish Pyrenees). The spatial distribution, the scarce vegetal cover and the high erosion level let a good visual and digital discrimination of badlands, as opposed to other land covers and surfaces. A maximum likelihood supervised method was used to discriminate heavily eroded areas (badlands) from scarce or densely vegetated lands, by means of the spectral signature of bare soil. The classification distance was used to obtain thresholds for eroded areas and areas at risk. Two error statistics (sensitivity and specificity) where used to determine the most adequate threshold values. The resulting map shows that most areas at risk are located surrounding the badland areas.
英文关键词	badlands marls regolith statistical sensitivity and specificity supervised classification maximum likelihood Landsat
类型	Article
语种	西班牙语
开放获取类型	Other Gold
收录类别	ESCI
WOS记录号	WOS:000421505200001
WOS关键词	LANDSAT-TM DATA ; SOIL-EROSION ; HYDROLOGICAL PROCESSES ; DEGRADATION ; INFORMATION ; CATCHMENT ; SAR ; DESERTIFICATION ; INTEGRATION ; PATTERNS
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329303
作者单位	[Alatorre, L. C.] CSIC, Inst Pirenaico Ecol, Campus Aula Dei,Apdo 202, E-50080 Zaragoza, Spain; [Begueria, S.] CSIC, Estacion Expt Aula Dei, Av Montafiana,1005, E-50059 Zaragoza, Spain
推荐引用方式 GB/T 7714	Alatorre, L. C.,Begueria, S.. Idenitifying active erosion areas and areas at risk by remote sensing : an example in a badlands landscape on marls in teh Central Spanish Pyenees[J],2009,35(2):171-194.
APA	Alatorre, L. C.,&Begueria, S..(2009).Idenitifying active erosion areas and areas at risk by remote sensing : an example in a badlands landscape on marls in teh Central Spanish Pyenees.CUADERNOS DE INVESTIGACION GEOGRAFICA,35(2),171-194.
MLA	Alatorre, L. C.,et al."Idenitifying active erosion areas and areas at risk by remote sensing : an example in a badlands landscape on marls in teh Central Spanish Pyenees".CUADERNOS DE INVESTIGACION GEOGRAFICA 35.2(2009):171-194.