Through rainfall simulating under laboratory , and making slice of sampling , the project researched in the soil crust development , and studied the dynamic rule of erosion factors which were raining and soil erosion factors during soil crust development . in the same time , the research was to find the critical condition of all factors in the process of soil crusting , and to filter the critical factor that could affect soil surface crust 本文采用人工模拟降雨方法，通过采样制作土壤切片，观察分析表土结皮在不同条件下发育的微形态特征，研究降雨、土壤等侵蚀产沙因子在表土结皮发育过程中的动态响应规律，界定表土结皮发育过程中各因子的临界条件，筛选有关土壤颗粒组成、结构特征等物理化学性质对表土结皮形成影响的关键因子。
