Sensitivity Evaluation of Soil and Water Loss in Xunwu County Based on GIS and RS
Soil and water loss is one of the main causes of river blockage,reduced water and soil fertility,and frequent floods and droughts.It not only destroys a large amount of cultivated land,deteriorates the ecological environment,but also leads to aggravation of poverty.In this paper,four evaluation factors are selected according to the actual geographical conditions of Xunwu county,com-bined with the comprehensive soil erosion index and the AHP method to confirm the right,and a comprehensive evaluation model for the sensitivity of soil and water loss in Xunwu county is proposed.The analysis results of the evaluation model show that most areas of Xunwu county are mainly sensitive to slight and mild degree of soil and water loss,and there are very few areas with extremely strong and severe sensitivity.The areas with relatively high degree of sensitivity are located in the northern and southern parts of Xiangshan township,the central and northern parts of Danxi township,the western part of Sanbiao township,and the central and southern part of Xunwu county along the water system,some areas overlap with human activity areas.
soil and water losssensitivityXunwu countyecological environment
万方数据
维普
