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《System Sciences and Comprehensive Studies in Agriculture》 2008-04
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Application of High-resolution Images on Soil Loss Quantitative Estimation——A case of QuickBird

WANG Wen-juan1,2,ZHANG Shu-wen1,LI Ying1,BU Kun1,2,YAN Ye-chao3 (1.Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun 130012,China;2.Graduated University of Chinese Academy of Sciences,Beijing 100049,China;3.Deparetment of Remote Sensing College of Remote Sensing,NanjingUniversity of Information and Technology,Nanjing 210044,China)  
Soil loss in China is very serious and it has become the top environment problem in China.Since 1980,GIS has been used to the domain of soil and water conservation.In our country,the most applications are to combine GIS and USLE to count the hillslope soil erosion.Especially,for the C and P factor,it often takes coarse-resolution images as data resource to get the value of C and P factor.But to some extent,this leads to mistakes on precision.At present,for the research on gully,it is often based on the measure of GIS or field investigation and pay more attention to the small scale.This paper,by using high-resolution image,provides new methods to acquire C,P which improve the precision of C,P.At the same time,the spatial distribution of gully are acquired and this will provide a new view to the larger spatial scale.All these works give some beneficial suggestion to the soil loss quantitative estimation.
【Fund】: 国家自然科学基金(40771162)
【CateGory Index】: S157
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