中国地理科学(英文版) ›› 2003, Vol. 13 ›› Issue (2): 142-148.

• 论文 • 上一篇    下一篇

SOIL EROSION AND ITS IMPACTS ON ENVIRONMENT IN YIXING TEA PLANTATION OF JIANGSU PROVINCE

ZHANG Yan1, ZHANG Hong2, PENG Bu-zhuo2, YANG Hao1   

  1. 1. Laboratory of Material Cycling in Pedosphere, Institute of Soil Sciences, Chinese Academy of Sciences, Nanjing 210008, P. R. China;
    2. Department of Urban and Resources Sciences, Nanjing University, Nanjing 210093, P. R. China
  • 收稿日期:2002-09-28 出版日期:2003-06-20 发布日期:2011-12-15
  • 作者简介:ZHANG Yan (1962- ), female, a native of Nanjing City, Jiangsu Province, Ph.D., specialized in resources and environment.
  • 基金资助:

    Under the auspices of the National Natural Science Foundation of China (No.49831070 and No.49973027).

SOIL EROSION AND ITS IMPACTS ON ENVIRONMENT IN YIXING TEA PLANTATION OF JIANGSU PROVINCE

ZHANG Yan1, ZHANG Hong2, PENG Bu-zhuo2, YANG Hao1   

  1. 1. Laboratory of Material Cycling in Pedosphere, Institute of Soil Sciences, Chinese Academy of Sciences, Nanjing 210008, P. R. China;
    2. Department of Urban and Resources Sciences, Nanjing University, Nanjing 210093, P. R. China
  • Received:2002-09-28 Online:2003-06-20 Published:2011-12-15

摘要:

Soil erosion on sloping field has led to a lot of environmental problems. In order to reveal the seriousness of the damage of soil erosion on sloping fields 137Cs tracer method was used to estimate soil erosion rate. 137Cs refer ence inventory of 2200Bq/m2 in Yixing, southern Jiangsu Province, was estimated and a model for estimating erosion of cultivated soil was established in order to avoid overestimating soil erosion rates. Then based on the soil erosion rates and measured soil physical and chemical properties, direct and indirect impacts of soil erosion on environment were further discussed. Direct impacts of erosion on environment included on-site and off-site impacts. The on-site impacts were that soil layer became thin, soil structure was deteriorated and soil nutrients decreased. The off-site impacts were that water bodies were polluted. The in direct impacts of soil erosion on environment were the increase of fertilizer application and energy consumption, and change of adaptability of land uses. Although erosion intensity was not serious in the study area, its environmental impacts should not be ignored because of great soil nutrient loss and coarseness of soil particles.

关键词: 137Cs reference inventory, erosion model, soil erosion, equivalent erosion module

Abstract:

Soil erosion on sloping field has led to a lot of environmental problems. In order to reveal the seriousness of the damage of soil erosion on sloping fields 137Cs tracer method was used to estimate soil erosion rate. 137Cs refer ence inventory of 2200Bq/m2 in Yixing, southern Jiangsu Province, was estimated and a model for estimating erosion of cultivated soil was established in order to avoid overestimating soil erosion rates. Then based on the soil erosion rates and measured soil physical and chemical properties, direct and indirect impacts of soil erosion on environment were further discussed. Direct impacts of erosion on environment included on-site and off-site impacts. The on-site impacts were that soil layer became thin, soil structure was deteriorated and soil nutrients decreased. The off-site impacts were that water bodies were polluted. The in direct impacts of soil erosion on environment were the increase of fertilizer application and energy consumption, and change of adaptability of land uses. Although erosion intensity was not serious in the study area, its environmental impacts should not be ignored because of great soil nutrient loss and coarseness of soil particles.

Key words: 137Cs reference inventory, erosion model, soil erosion, equivalent erosion module

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