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以GIS为平台,利用TM影像和通用土壤流失方程(USLE)动态分析饶河县土壤侵蚀变化情况,结果表明:饶河县1995和2005年两个时期的土壤侵蚀强度均包括微度、轻度、中度、强烈4个等级,土壤侵蚀面积和强度均呈增长态势,轻度及以上侵蚀面积从1995年的529.13 km2增加到了2005年的867.41 km2;土壤侵蚀主要分布在中部、北部地区,并呈现从北部向中部发展的趋势;土地利用变化中耕地面积增加量最大,主要来源为林地和未利用地,林地面积减少量最大,主要转变为耕地和草地;根据土壤侵蚀与土地利用的关系,土壤侵蚀主要发生在耕地和林地,按大小排序依次为耕地>林地>未利用地>草地。
Using GIS as the platform and using TM image and generalized soil loss equation (USLE) to analyze the changes of soil erosion in Raohe County. The results showed that the soil erosion intensity in Raohe County in 1995 and 2005 both included slight and slight , Moderately and strongly, the area and intensity of soil erosion showed an increasing trend. The erosion area above mild and above increased from 529.13 km2 in 1995 to 867.41 km2 in 2005; and the soil erosion was mainly distributed in the central and northern regions, with The main source of which is woodland and unutilized land, the largest decrease of forestland area is mainly the change of cultivated land and grassland; According to the relationship between soil erosion and land use, Soil erosion mainly occurs in cultivated land and forest land, and in order of size, cultivated land> forest land> unused land> grassland.