Soil erosion is one of the most critical
eco-environmental issues in the Poyang Lake basin, China. The purpose of this
study is to discover the spatial pattern of soil erosion, and predict
soil loss and sediment yield, and evaluate soil loss impacts on main reservoirs
by using Universal Soil Loss Equation (USLE), GIS and Remote Sensing (RS).
Firstly, five erosion factors including
rainfall erosivity (R), soil erodibility (K), topographic factor (LS), cover
and management factor(C), and conservation supporting practice factor (P) were
calculated and analyzed, respectively. Secondly, annual soil erosion and its
spatial distribution were evaluated, and sediment yield was subsequently
predicted.
Next, soil erosion was classified into five
erosion categories according to Industry Standard of Water Resources of China.
Then, the relationship among soil erosion, landform and land use and land cover
(LULC) were analyzed. Finally, the influence of soil erosion on main reservoirs
in the basin were assessed.
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