中文摘要：

在对黄土高原植被进行分区的基础上,利用地理信息系统技术和景观生态学方法对黄土高原植被区空间数据和土壤侵蚀空间数据进行了空间叠加分析。结果表明,黄土高原被划分为森林植被区、森林草原植被区、温性草原植被区和荒漠半荒漠植被区。在森林植被区,黄土高原土壤侵蚀主要以水蚀为主,轻度以上的侵蚀百分比为41.92%,水蚀土壤侵蚀指数比温性草原植被区和荒漠半荒漠植被区的水蚀土壤侵蚀指数大,为346.90。在森林草原植被区,黄土高原土壤侵蚀主要以水蚀为主,轻度以上的侵蚀百分比为70.45%,水蚀土壤侵蚀指数均比其他植被区的水蚀土壤侵蚀指数大,为449.40,水蚀最为严重。在温性草原植被区,黄土高原土壤侵蚀主要以水-风混合侵蚀为主,风蚀微度-水蚀剧烈的百分比最大,为33.01%,水-风混合侵蚀土壤侵蚀指数均比其他植被区的水-风混合侵蚀土壤侵蚀指数大,为633.45,水-风混合侵蚀最为严重。在荒漠半荒漠植被区,黄土高原土壤侵蚀主要以风蚀为主,轻度以上的侵蚀百分比为99.65%,风蚀土壤侵蚀指数均比其他植被区的风蚀土壤侵蚀指数大,为589.78,风蚀最为严重。黄土高原的土壤侵蚀表现出明显的地带性分异规律。

英文摘要：

The spatial data of vegetation regions and soil erosion in loess plateau were spatially overlap-analyzed with geographical informa- tion system（GIS） technology and landscape ecological methods on the basis of loess plateau vegetation regions classification. For a long time, severe soil erosion has not only produced a great impact on agriculture in this area, but also seriously damaged the ecological system of the Loess Plateau and the near areas. The study shows the crucial factor leading to soil erosion was vegetation. The vegetation region attributes in Loess Plateau were embodied with geographical information system （GIS） technology, two-way indicator species analysis （TWINSPAN） and detrended canonical correspondence analysis（DCCA）. The Loess Plateau is classified into four regions, which are forest vegetation region, forest-steppe vegetation region, steppe vegetation region and semi-desert and desert vegetation region. There existed a close relation between the vegetation region and soil erosion in Loess Plateau land-scale. The relationship of the vegetation region and soil erosion in Loess Plateau was discussed by using the spatial overlap statistics of the soil erosion data and vegetation region data based on geographical information sys- tem. The results showed that frozen erosion distributes in both forest-steppe vegetation region and steppe vegetation region while water ero- sion, wind erosion and water-wind erosion distribute in all vegetation regions. In forest vegetation region, water erosion above the light degree accounted for 41.92%, and water erosion index, being 346.90, was bigger than those in the steppe vegetation region and semi-desert and desert vegetation region. In forest-steppe vegetation region, water erosion above the light degree accounted for 70.45%, and water erosion in- dex, being 449.40, was biggest in all the indexes of the vegetation regions, which meant water erosion in the forest-steppe vegetation region was the most severe. In steppe vegetation region, water-win