RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2010, Vol. 19 >> Issue (2): 196-.

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ANTHROPOGENIC IMPACTS ON THE SEDIMENT LOAD VARIATIONS IN THE JIALING RIVER BASIN

WEI Jie1| HE Xiubin2   

  1. (1.Tourism College of Chongqing Normal University| Chongqing 400047| China； 
    2.Institute of Mountain Hazards and Environment| Chinese Academy of Sciences| Chengdu 610041| China)
  • Online:2010-02-20

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Abstract:

he amount of river sediment load represents an important measure of soil erosion in the context of human activities.Seven factors were selected to indicate the human activities that have significant impacts on the sediment load in the Jialing River Basin.The results from the path analysis by the software SPSS 150 showed that the sequences of the general human effects were as follows：reservoir construction，rural labor transfer，cumulative erosion control area，forest cover，rural electropower consumption，road length，and ratio of slope land to cultivated land.The sequences of the direct impacts were reservoir construction，rural labor transfer，cumulative erosion control area，rural electropower consumption，ratio of slope land to cultivated land，road length and forest cover.And the indirect impacts were followed the order：forest cover，road length，rural electropower consumption，cumulative erosion control area，ratio of slope land to cultivated land，rural labor transfer and reservoir construction.

Key words: human activities/ Jialing River/ sediment load/ path analysis

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