长江流域资源与环境 >> 2010, Vol. 19 >> Issue (2): 196-.

• 生态环境 • 上一篇    下一篇

人类活动对嘉陵江流域泥沙负荷的影响

韦 杰1|贺秀斌2   

  1. (1.重庆师范大学旅游学院|重庆 400047; |2.中国科学院成都山地灾害与环境研究所|四川 成都 610041)
  • 出版日期:2010-02-20

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

摘要:

河流泥沙负荷是人类活动影响下侵蚀产沙的重要反映。选择人类活动对嘉陵江流域泥沙负荷变化影响较大的7个表征变量,通过应用SPSS150进行通径分析,结果表明:抑制土壤侵蚀的各个因子作用大小依次为:新修塘库、农村劳动力转移、累计治理面积、森林覆盖率、农村用电量、公路通车里程及旱地比例。对嘉陵江河流泥沙负荷减少的直接贡献由大至小分别为:新修塘库、农村劳动力转移、累计治理面积、农村用电量、旱地比例、公路通车里程及森林覆盖率。各影响因子的间接作用由大至小分别为:森林覆盖率、公路通车里程、农村用电量、累计治理面积、旱地比例、农村劳动力转移及新修塘库.

关键词: 人类活动/ 嘉陵江/ 泥沙负荷/ 通径分析

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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