Abstract: Ecosystem greening is an important part of expressway construction, a part of environment protect. Based on the study of botany, ecology and environment aesthetics, the functions and roles of highway afforestation are analyzed in the paper. Considering the prevention of insect pest and the development tendency of afforestation, a comprehensive assessment on the means and methods forit has been put forward

Key words: highway green, principle, environmental protection, worm prevention

摘要： 高速公路建设对生态环境破坏较大，生态绿化是公路美学的重要组成部分，也是环境保护的重要内容。道路 绿化应从植物学、生态学、环境美学的角度出发，分析生态绿化的功能及作用，考虑绿化虫害的防治对策及绿化的 发展趋势，对生态绿化的方式、方法进行综合评估，以确定高速公路建设中生态环境治理的方法。

关键词: 生态绿化, 原则, 环境保护, 虫害防治