土壤潜在侵蚀最严重地区──黄土残塬沟壑区──以晋西黄土残塬沟壑区为例

The Latent Region of Serious Soil Erosion BeingTattered Loess YuanTaking the Tattered Loess Yuan In the West of Shanxi as an example

本文从土壤侵蚀的环境背景、侵蚀能力的力学原理、土壤潜在侵蚀面等几个方面，分析了黄土残塬沟壑区的侵蚀，得出黄土残塬沟壑区具有土壤侵蚀形成并趋于严重的条件。选定典型区域抽样对土壤潜在侵蚀因子半定量记分，用总分评定法划分潜在侵蚀危险强度。同时用聚类分析法进行了潜在侵蚀类型划分，绘制了典型区域潜在侵蚀危险强度图，指出未来土壤潜在侵蚀的最严重地区是黄土残塬沟壑区。

Through analysising the environment background of soil erosion,mechanics of erosionpower and latent area of soil erosion,the author hold that tattered loess yuan was subject tosoil erosion and tended serious.Then the auther chose 34 samples with specified representative inthe typical area,and took experience and test score to affection factors according to their affectionextent,and determined latent erosion intensity grades by adding up to every factor score in sample. Based on the above mentioned analyses and indistinct cluster analysis the 5 grades of latenterosion intensity were distinguished,the 1:500 000 latent erosion dangerous intensity map wasdraw up,the serious region of soil erosion is pointed out to be the region of tattered loess yuan.