Journal of Geographical Sciences ›› 2009, Vol. 19 ›› Issue (1): 81-94.doi: 10.1007/s11442-009-0081-5

• Climate and Environmental Change • Previous Articles     Next Articles

Spatiotemporal features of soil and water loss in Three Gorges Reservoir Area of Chongqing

LI Yuechen1,2,3, LIU Chunxia2,3, YUAN Xingzhong1   

  1. 1. College of Resources and Environmental Science, Chongqing University, Chongqing 400044, China|
    2. College of Geographical Science, Chongqing Normal University, Chongqing 400047, China|
    3. Key Laboratory of GIS Application, Chongqing Municipal Education Commission, Chongqing 400047, China
  • Received:2008-05-20 Revised:2008-07-29 Online:2009-02-25 Published:2010-09-18
  • Supported by:

    National Natural Science Foundation of China, No.40801077; Science & Technology Research Project Supported by Chongqing Municipal Education Commission, No.KJ070811; Doctoral Fund of Chongqing Normal University, No.06XLB004; Project by Chongqing Water Conservancy Bureau

Abstract:

Soil and water loss has been the most serious eco-environmental problem in the Three Gorges Reservoir Area of Chongqing. In this paper the authors studied the spatiotemporal features of soil and water loss from 1999 to 2004 based on RS and GIS techniques. The results showed that: (1) The soil and water loss area decreased from 1999 to 2004. (2) Soil and water loss mainly exists in purple soil, yellow soil, limestone soil, paddy soil and yellow brown soil distributed areas. (3) The dry slope land and sparse woodland that are intensively influenced by human activities experienced most serious soil and water loss. (4) Soil and water loss in the study area indicated an obvious vertical differentiation characteristic. (5) There is a significant correlation between soil and water loss and slope. (6) There is no obvious correlation between soil and water loss and aspect. (7) Soil and water loss mainly exists in the values of R between 300 and 340 distribution area. The very-high soil and water loss has obvious correlation with R.

Key words: soil and water loss, Chongqing, Three Gorges Reservoir Area