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将RS和GIS与美国通用土壤流失方程(USLE)相结合,利用ArcGIS 9.3的栅格数据空间分析功能,进行涪江流域上游土壤侵蚀量的预测和估算。结果表明:该区域土壤侵蚀主要为微度侵蚀,且占总面积的85.65%,轻度侵蚀占总面积9.13%,中度侵蚀占总面积2.89%,强度侵蚀及以上地区的面积占总面积2.33%。涪江流域上游土壤侵蚀与该区域的地形、土地利用相关性很大,侵蚀强度大的区域多为植被破坏严重地区。
The RS and GIS were combined with the US generalized soil loss equation (USLE) to predict and estimate soil erosion in the upper reaches of the Fujiang River Basin using the spatial data analysis function of ArcGIS 9.3. The results showed that the main soil erosion in this area was micro-erosion, accounting for 85.65% of the total area, mild erosion accounted for 9.13% of the total area, moderate erosion accounted for 2.89% of the total area, and intensity erosion and above area accounted for 2.33% of the total area %. The soil erosion in the upper reaches of the Fujiang River has a great correlation with the topography and land use in this area. Most of the areas with high erosion intensity are those with serious vegetation damage.