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通常把防风固土,改善(美化)环境作为公路绿化的主要目标,而公路绿化带作为重要的生态廊道,其重要的生态功能之一应该是保护生物多样性。当前公路绿化大多借用园林绿化模式,不仅增加了绿化和管护成本,而且其生态功能和生态安全也不能得到有效保证。公路绿化应该符合生态走廊的建设要求,采用恢复天然植被的方法进行绿化,才能充分发挥公路绿化的综合生态功能和效益。
As the main goal of highway greening, windbreaking and soil fixing, beautification and environment improvement are usually taken as the important ecological corridors. One of the important ecological functions of highway green belts should be to conserve biodiversity. At present, most of the greening of roads uses the greening mode of landscaping, which not only increases the cost of afforestation and management, but also can not effectively guarantee the ecological functions and ecological security. Highway greening should meet the requirements of the construction of ecological corridors, using natural vegetation restoration methods for greening, can give full play to the comprehensive ecological functions and benefits of highway greening.