Study On Remote Sensing Monitoring Technology Of Soil And Water Loss In Tianjin City Based On RUSLE

China is one of the very serious soil erosion countries,a wide range of soil and water loss.Land destruction caused by soil erosion,contributing to the deterioration of the ecological environment,has seriously affected the people's life and production.The important content of soil and water conservation ecological construction and sustainable development,are important means of harmonious relationship between human and nature,is the Foundation of building an overall well-off society construction and water resources an important part of people's livelihood.In order to control soil erosion,the importance of soil,to analyze the causes of soil erosion,rapid soil erosion monitoring system.With the development of remote sensing technology,provide the necessary technical support for the monitoring of soil and water loss,soil erosion monitoring can realize rapid.Therefore,based on the remote sensing technology of soil and water loss research is of great necessity.(1)Selected Tianjin for case study,based on the analysis of soil and water loss,by studying the effects of soil erosion,land use,vegetation cover,slope and length,rainfall erosivity,soil erodibility,measures factors such as spatial distribution,using the modified universal soil loss equation(RUSLE)and quantitative calculation of the spatial distribution of soil erosion.(2)Remote sensing images obtained land use,vegetation and land use,distribution,and slope length factor calculated by DEM,soil erodibility factor calculated by soil type data,using TRMM data to calculate the rainfall erosivity factor,and calculates the amount of soil erosion using GIS Spatial overlay,and verify the model results with the survey results,the model has good accuracy.(3)Results of this study can be applied directly to the rapid analysis of soil and water loss calculation,can provide the quantitative data of the spatial distribution of soil erosion,improving the accuracy of analysis and calculation of soil erosion,eliminate accidental errors of interpretation,to reduce the cost of soil erosion,improve efficiency,improve the level of soil and water conservation monitoring is important.