黄土高原地区土壤可蚀性及其应用研究

通过回顾已有的成果 ,分析评价了我国土壤可蚀性研究的进展及存在的问题 ,提出我国土壤可蚀性研究中的标准小区定义。运用野外观测资料 ,研究计算了黄土高原地区土壤可蚀性指标值。结果表明 ,陕北和晋西北一带黄土可蚀性 K值变化于 0 .3～ 0 .7之间 ,并且有以陕西子洲、绥德一带为最大 ,以此为中心 ,向南、向北和向东都减少的变化趋势。

Soil erosion is now universally reckoned as an ecological environment problem,which results in land degradation and a band of ecological problems such as water pollution and flood disaster,Especially in the vast northwest region of China,a key to restore ecological environment is to control soil erosion.Besides vegetation disruption,rainfall concentration,and steep farmland ect,the susceptibilities of loess to erosion substantially conduce to severe soil erosion on the loess plateau.Soil erodibility being a...