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基于地理信息系统(GIS)和遥感技术(RS),提取了巢湖流域地表覆盖、水土保持措施、坡度坡长、土壤可蚀性、降雨侵蚀力5个主要影响水土流失的因子,并运用修正的通用土壤侵蚀模型(revised univer-sal soil loss equation,RUSLE)估算土壤侵蚀量,生成水土流失等级分布图,从而完成对巢湖流域水土流失现状和空间分布特征的评估分析。结果表明,巢湖流域水土流失主要为微度侵蚀和轻度侵蚀,分别占流域总面积的93.87%和6.04%。此外,坡度和植被覆盖是影响流域土壤侵蚀的主要因素。研究结果可为巢湖流域水土流失治理及决策提供科学参考。
Based on Geographic Information System (GIS) and Remote Sensing (RS), five main influencing factors of soil and water loss such as surface cover, soil and water conservation measures, slope length, soil erodibility and rainfall erosivity in Chaohu Lake Basin were extracted. The soil erosion amount is estimated by the revised univer-sal soil loss equation (RUSLE) and the soil erosion level distribution map is generated to evaluate and evaluate the status and spatial distribution of soil and water loss in the Chaohu Lake Basin. The results show that soil erosion in Chaohu Lake Basin is mainly micro-erosion and mild erosion, accounting for 93.87% and 6.04% of the total basin area respectively. In addition, slope and vegetation cover are the main factors affecting soil erosion in the basin. The results can provide scientific reference for soil erosion control and decision-making in Chaohu Lake Basin.