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Impact of soil erosion on soil fertility and land productivity.

Yang Wude( Department of Agronomy, Shanxi Agricultural University, Taigu 030801), Wang Zhaoqian ( Institute of Agricultural Ecology, Zhejiang Agricultural University, Hangzhou 310029).  
Studies on the spatial differentiation of soil fertility and land productivity of red soil slope fields under different land use patterns revealed that soil erosion had negative effects on soil fertility and land biological productivity,which mainly manifested in the decreasing contents of soil available N, P, K. and their relative poor on the top and rich at the bottom of the slope, the reduced soil organic matter content, the soil sandification, and the resultant reduction of land biological productivity.
【Fund】: FAO/UNDP亚太区域资助项目
【CateGory Index】: S158,S157.1
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