Dynamic Monitoring of Soil Erosion and Spatial Distribution in the Xiangzi River Watershed of Three Gorges Reservoir Area Based on Remote Sensing
In this paper, based on remote sensing data of 1999a and 2007a of the Xiangxi River watershed(XRW) and field investigation, changes of soil erosion and spatial distribution in the XRW has been studied through the GIS spatial overlay analysis of vegetation coverage、terrain slope and land use. The result indicated that the soil erosion area of the XRW reduced from 1999a to 2007a, the areas above moderate soil erosion decreased from 623.01 km2 to 334.19km2，occupied 20.73％ and 11.12％ of the total study area respectively. For spatial distribution, the slight soil erosion distributed extensively. The more serious region mainly distributed in two banks of the river with the proportion of the areas above moderate erosion reached to 46.03％ and 25.45％. It should be gained more attention in the future.
RS GIS soil erosion dynamic Monitoring ziangzi River
Xiu-juan WANG Rui-min LIU Yong-wei GONG Qian HONG Zhen-yao SHEN
State Key Lab.Of Environ.Simulation and Pollution Control,School of Environment Beijing Normal University Beijing,P.R.China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）