Characteristics and Driving Factors of Sandy Desertification in the Sandy Hill Area of Poyang Lake
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    Abstract:

    Soil erodibility is the intrinsic factor which has effect on water erosion on slope and is related to soil texture , soil organic matter , and other soil properties. Sediment particle is analyzed by using plot data from rainfall simulation experiments.Results show that ( 1)during rainfall, particle composition of sediment changes with time . Sand content increases, silt content keeps constant , and clay content decreases. ( 2) Rainfall intensity is the important factor to the particle composition of sediment . With rain intensity increasing , sand content increases and slit and clay contents are reduced. ( 3)The effect of slope gradient on sedi- ment is complicated . When slope becomes steeper , sand content increases first and then decreases, whereas silt and clay contents decrease first and then increase . When slope gradient is 20 ° , sand content reaches the maximum and slit and clay contents, the minimum.

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丁明军,郑林,聂勇.鄱阳湖沙山地区沙化土地特征及成因分析[J].水土保持通报英文版,2010,(2):159-163

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History
  • Received:August 26,2009
  • Revised:November 23,2009
  • Online: November 26,2014