北京地区土壤水力侵蚀评估

Evaluation on Soil Hydra-erosion in Beijing Area

基于永定河上游北京典型段的土壤水力侵蚀深度、降雨强度、地表径流深度、土层有效厚度、土粒平均粒径、植被覆盖度等数据图层 ,利用 GIS、SPSS软件包 ,通过建立水力侵蚀遥感信息模型 ,制作了北京地区土壤水力侵蚀深度图和抗侵蚀年限图 ,这可以为该地区土地利用和泥石流分布规律研究提供理论指导。

Based on the multiple data layers for mapping such as the depth of soil hydra erosion, the intensity of precipitation, the depth of surface runoff, the effective depth of soil layer, the average diameter of soil particle, the cover degree of vegetation, a model of remote sensing information of soil hydra erosion with GIS and SPSS software is constructed. The authors also work out two maps in Beijing area, one is the depth of soil hydra erosion, and another is the life span of soil anti erosion. The study may provides a theoretical basis for the research of land use and distribution of mud rock flow in Beijing area.