伏沙地区域输电线路工程水土流失特征研究

Analysis on the characteristics of water and soil erosion of power transmission lineproject in the sinking sandy land

伏沙地位于典型草原与沙地过渡区域,是指示草原生态脆弱性的典型地带,其成土结构不完整。输电线路工程施工造成伏沙地草原表层破坏,形成伏沙地破口,为风蚀、水蚀提供了丰富的物料来源。风力、降雨及径流进一步蚕食伏沙地破口区域,导致伏沙地草原迅速沙化。以锡林郭勒草原与浑善达克沙地交错地带的某输电线路工程为例,探讨输电线路工程在伏沙地区域的水土流失特征、水土流失成因,总结水土保持治理措施,以期对同类工程提供借鉴。

The sinking sandy land is located in the transition area between the typical grassland and the sandy land,which indicates the ecological fragility of the grassland.The soil-forming process of sinking sandy is half-baked.The surface damage of grassland caused by the power transmission line project provides abundant material sources for wind erosion and water erosion.Wind,rainfall and runoff further encroached on the break area,resulting in the rapid desertification of grassland.Taking a power transmission line project in the interlacing area of xilin gol grassland and hunshandak sandy land as an example,this paper discusses the characteristics and causes of water and soil erosion of the power transmission line project in the sinking sandy land area,and summarizes the measures of water and soil conservation,so as to provide reference for similar projects.