Acta Geographica Sinica ›› 2004, Vol. 59 ›› Issue (2): 183-188.doi: 10.11821/xb200402003

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Assessment and Spatial Distribution of Sensitivity of Soil Erosion in Tibet

WANG Xiaodan, ZHONG Xianghao, FAN Jianrong   

  1. Institute of Mountain Hazards and Environment, CAS and Ministry of Water Conservancy, Chengdu 610041, China
  • Received:2003-07-17 Revised:2003-09-27 Online:2004-03-25 Published:2004-03-25
  • Supported by:

    National Natural Science Foundation of China, No. 50099620

Abstract:

Based on Universal Soil Loss Equation and methods of mathematics model and GIS analysis, we classified influence of precipitation, soil, topography and vegetation upon sensitivity of soil erosion into five different degrees. As a result, assessment map of each factor was finished. We also drew integrated assessment map of sensitivity of soil erosion by overlapping function with Arcinfo. Furthermore, we analyzed distribution characteristics and spatial difference of sensitivity of soil erosion in Tibet under special plateau environment. According to sensitivity degree, priority erosion control areas were confirmed so as to provide scientific basis for departments of water conservancy, traffic management and agriculture which could make scientific and reasonable decisions.

Key words: soil erosion, sensitivity, spatial difference, Tibet