人工降雨条件下土壤结皮的形成以及与土壤溅蚀的关系  

Development of Soil Crust Through Rainfall Simulating in Laboratory and Relationship Between Crust and Splash Erosion

作　　者：胡霞[1] 严平[1] 李顺江[2] 蔡强国[2] 刘连友[1] 蔡崇法[3] 朱远达[2] 张光远[3] 

机构地区：[1]北京师范大学资源学院,北京100875 [2]中国科学院地理科学与资源研究所,北京100101 [3]华中农业大学资源环境学院,湖北武汉430070

出　　处：《水土保持学报》2005年第2期13-16,共4页Journal of Soil and Water Conservation

基　　金：国家科技攻关项目 (2 0 0 2BA51 7A1 0 );中国科学院地理科学与资源研究所创新工程项目 (CXIOG -A0 0 - 0 5 - 0 2 );国家自然科学基金 (30 371 1 91 )资助

摘　　要：通过人工模拟降雨溅蚀实验,测定土壤溅蚀速率,同时采样制作土壤切片,观察分析结皮的发育特征以及与土壤溅蚀的关系。结果表明,降雨过程中有两种类型结皮形成,即沉积结皮和结构结皮。土壤结皮随着土壤表面大团聚体或者大颗粒的分散而形成,并且伴随着下层大孔隙的出现。土表结皮的完善过程。Through rainfall simulating in laboratory, and observation on soil sample slices, this study intended to disclose crust development, and reveal the relationship between crust and splash erosion. Two kinds of crust, i.e., structural crust and depositional crust, were observed in the experiment. With the development of crust, bigger aggregates and grains were dispersed, and bigger pores formed beneath the crust. The development of crust was also the process of soil resisting splash erosion enhanced.

关 键 词：土壤结皮 溅蚀 降雨条件 人工模拟降雨 土壤切片 同时采样 发育特征 降雨过程 土壤表面 大颗粒 团聚体 大孔隙 

分 类 号：S288[农业科学—农业水土工程] S157.1[农业科学—农业工程]