中国土地资源的土壤侵蚀状况分析

土壤侵蚀不仅会导致土地资源的退化 ,而且会造成环境恶化。在定义土壤侵蚀指数的基础上 ,以土地资源类型为单元 ,以遥感与 GIS技术为支撑 ,分析不同土地资源类型下土壤侵蚀类型与强度 ,阐明土地资源的土壤侵蚀背景 ,揭示出两者之间的关系 ,并作出区域上的分析。在我国的北方以还草为主 ,南方以还林为主。

Analysis of Soil Erosion Status of China Land Resource

Land resource is the foundation for human being to live. The soil erosion results in land degeneration, environment depravation, and influences weather change. China is a developing country, how the country use land resource will definitely affect environmental change. This paper sets the type of land resource as a unit based on defining soil erosion index. Under the GIS and RS supporting, we put these coverages into GRID which square is 100m, and overlay these two coverages. Then we get what we need datum. By analysis these datum, we analysis the type and intension of soil erosion, set forth the soil erosion background of land resource. Therefore, we can explore the relationship between soil erosion and land resource. Finally, we make analysis in region. The result is that we should mainly plant tree in south of China and plant grass in north of China.