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Analysis and Suggestions on Water and Soil Erosion of Highway Construction

Yang Changzhe,Zhang Li(Tianjin Environmental Protection Technical Development Center,Tianjin 300191)  
Taken the highway construction in Tianjin as an example,the cause of soil erosion was analyzed.The main reasons are precipitation,decreasing of vegetation,topography and human activities etc.The amount of soil erosion before and after the construction was assessed according to soil erosion equation.The result shows that the soil and water loss remains the level before construction within 2~3 years after completion of the road due to vegetation recovery.The soil and water loss will keep on decreasing along with the vegetation recovery.
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