中国地理科学(英文版) ›› 2003, Vol. 13 ›› Issue (3): 238-241.

• 论文 • 上一篇    下一篇

QUANTITATIVE STUDY OF SOIL EROSION AND ELEMENT RUN-OFF IN THE SONGHUA LAKE VALLEY

WANG Ning1, ZHU Yan-ming2, WANG Hui-lian1   

  1. 1. Department of Environmental Science, Northeast Normal University, Changchun 130024, P. R. China;
    2. Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012, P. R. China
  • 收稿日期:2003-01-13 出版日期:2003-09-20 发布日期:2011-12-15
  • 作者简介:WANG Ning(1953- ), female, a native of Beijing, associate professor, Ph. D., specialized in environment geography and the control and management of water pollution
  • 基金资助:

    Under the auspices of Chinese Academy of Sciences(KZ952-S1-201)

QUANTITATIVE STUDY OF SOIL EROSION AND ELEMENT RUN-OFF IN THE SONGHUA LAKE VALLEY

WANG Ning1, ZHU Yan-ming2, WANG Hui-lian1   

  1. 1. Department of Environmental Science, Northeast Normal University, Changchun 130024, P. R. China;
    2. Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012, P. R. China
  • Received:2003-01-13 Online:2003-09-20 Published:2011-12-15

摘要:

Under the condition of different precipitation intensities, different gradients, different land-use types and different vegetation coverage, the soil erosion and transference of element(or pollutant) are studied by simulating and analyzing the surface run-off of experimental plots in the catchment area of Songhua Lake, with an area of about 43 370.8km2. And the influencing factors that produce the spatial difference are analyzed and assessed. It is put forward that the irrational land utilization is the reason of soil erosion and pollutant run-off. The gradient of farmland, the growing season of vegetation and the vegetation coverage are chiefly restricting factors that lead to the soil erosion and pollutant run-off. This study can provide the fundamental data for comprehensive planning and harnessing of the non-point source pollution in the valley.

关键词: soil erosion, pollutant run-off, land-use type, vegetation coverage

Abstract:

Under the condition of different precipitation intensities, different gradients, different land-use types and different vegetation coverage, the soil erosion and transference of element(or pollutant) are studied by simulating and analyzing the surface run-off of experimental plots in the catchment area of Songhua Lake, with an area of about 43 370.8km2. And the influencing factors that produce the spatial difference are analyzed and assessed. It is put forward that the irrational land utilization is the reason of soil erosion and pollutant run-off. The gradient of farmland, the growing season of vegetation and the vegetation coverage are chiefly restricting factors that lead to the soil erosion and pollutant run-off. This study can provide the fundamental data for comprehensive planning and harnessing of the non-point source pollution in the valley.

Key words: soil erosion, pollutant run-off, land-use type, vegetation coverage

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