Soil and Water Loss Control Along Gansu Pipeline in West to East Petroleum Transportation Project

The western pipeline of PetroChina has,at present,the longest transportation distance among the petroleum pipelines in China.Because the pipeline was paved mechanically,original landform,top soil and vegetation were destroyed,which reduced soil anti-erodibility and caused soil and water loss.The natural situation was firstly summarized and then,soil and water loss and its impacts on ecological environment were analyzed for the pipeline in Gansu Province.The three synchronous steps principle must be insisted on.In addition,the measures should be taken according to the following policies,such as the combination of comprehensive control with comprehensive exploitation,scientific allocation of control measures,and prevention of soil erosion newly occurred.