TANG Li-jie, SHU Chang. Assessment and Analysis of Soil Erosion in Chaohu Lake Basin Based on GIS and Remote Sensing[J]. Bulletin of Soiland Water Conservation, 2013, 32(1): 305-308.
TANG Li-jie, SHU Chang. Assessment and Analysis of Soil Erosion in Chaohu Lake Basin Based on GIS and Remote Sensing[J]. Bulletin of Soiland Water Conservation, 2013, 32(1): 305-308.DOI:
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。
Abstract
Based on geographic information systems(GIS)and remote sensing(RS)
five primary factors affecting soil erosion in the Chaohu Lake basin are extracted
i.e.
vegetation coverage
soil and water conservation measures
terrain
soil erodibility and rainfall erosivity.Meanwhile
the amount of soil erosion is estimated and the distribution map of soil erosion grade was acquired using the revised universal soil loss equation(RUSLE)model.The assessment and analysis of soil erosion status and its spatial distribution patternsin the basin are performed.Numerical results indicate that the dominated soil erosion types in the basin arethe very slight erosion and slight erosion that account for 93.87% and 6.04%
respectively.In addition
slope and vegetation coverage are the main factors affecting the soil erosion status in the basin.The findingsfrom the study are valuable for soil erosion control and decision-making for the Chaohu Lake basin.