The highway project is a kind of constructive project ,and often need pass through the complex and diverse topography .As the degree and forms of disturbance to the surface are complex ,the highway project has a great impact on soil erosion along the highway .On the basis of highway environmental impact assessment ,this article analyzes the soil erosion caused by road construction and discusses the mitigation measures .% 指出了公路工程项目属于建设性项目，穿越地形地貌复杂多样，扰动地表程度及形式复杂多变，对沿线水土流失影响较大。以高速公路环境影响评价为例，对公路建设造成的水土流失影响进行了分析和阐述，提出了可采取的减缓措施。
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