Journal of Geographical Sciences ›› 2004, Vol. 14 ›› Issue (1): 41-46.

• Climate and Environmental Change • Previous Articles     Next Articles

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, Chengdu 610041, China
  • Received:2003-07-17 Revised:2003-11-10 Online:2004-03-25 Published:2010-10-23
  • 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, this study classified influence of precipitation, soil, topography and vegetation upon sensitivity of soil erosion into five different degrees which are extreme sensitivity, quite sensitivity, sensitivity, less sensitivity and no sensitivity. Assessment map of each factor was generated separately. Integrated assessment map of sensitivity of soil erosion has also been drawn by overlapping function with Arcinfo. Furthermore, the study analyzed distribution characteristics and spatial difference of sensitivity of soil erosion under special plateau environment of Tibet. According to sensitivity degree, some important controlling regions was confirmed so that departments of water conservancy, traffic management and agriculture could make scientific and reasonable decisions for their respective subject planning.

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