山区是众多河流的源头 ,河流两岸是人类活动较为集中的区域 ,山区高速公路的选线往往也集中于此 ,这样对这一区域的生态环境的影响和破坏也就较大。因此 ,高速公路建设中要加强对生态环境的保护 ,减少对环境的破坏 ,公路的规划、设计阶段是关键 Mountainous areas are the source of numerous rivers. Cross-strait areas are areas where human activities are more concentrated. Route selection of mountainous expressways is often concentrated here as well, which has a greater impact and damage on the ecological environment in this area. Therefore, the highway construction to strengthen the protection of the ecological environment and reduce damage to the environment, the planning of the road, the design phase is the key