Analysis of Erosion Characteristics of Small Watershed and Channel of Debris Flow Based on Multi-source Remote Sensing Technology
This paper mainly explores the application of multi-source remote sensing technology in the analysis of erosion characteristics of small watershed and channel of debris flow.The data of the study area were obtained from satellite radar images,aerial remote sensing effects,large scale digital topographic maps and field survey data,and the deformation information was extracted by using the two-track method and offset tracking technology,and a digital system of"slope-basin-channel"was established.This system was used to extract the characteristics of slope erosion and sediment yield in the study area,and four factors including channel height difference,channel length,watershed area and vegetation coverage were selected to explore the influence of each factor on the erosion rate.The results show that the erosion rate of the channel can be reduced by decreasing the elevation difference and lengthening the channel length.Reducing watershed area and increasing vegetation coverage can reduce erosion rate of small watershed.
万方数据
维普
