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直到20世纪60年代,道路建设引起的生态环境问题才开始被人们关注。在20世纪80年代以前,人们主要关注公路对野生动物生境的干扰和水土水文效应的影响。欧美国家在20世纪60年代席卷全球的环境启蒙运动中就针对道路建设对水土流失、水文效应给予了关注,并逐步发展了系统规范的防控方案。20世纪70年代以后,欧洲一些国家和美国开始建造一些为了野生动物穿越公路的桥梁和涵洞,如法国建造了150多座5~10米宽的小桥,建造了欧洲第一
Until the 1960s, ecological problems caused by road construction began to be concerned about. Before the 1980s, people mainly focused on the interference of roads to wildlife habitats and the impacts of hydrology and hydrology. During the Enlightenment Enviroment sweeping the world sweeping the globe in the 1960s, the European and American countries paid attention to the water and soil erosion and hydrological effects of road construction and gradually developed systematic and standardized prevention and control programs. Since the 1970s, some European countries and the United States started to build bridges and culverts for wildlife crossing roads. For example, France built more than 150 small bridges of 5 to 10 meters in width and built the first European