道路绿化,一般指公路、铁路和地方道路的绿化。绿化道路可以调节气候、防风固沙、吸滞烟尘,清洁空气,美化环境,增加林产收益,能防风、防雨、防雪,保护路面,坚固路基,有利交通。夏天有浓密的树叶遮荫,使行人感到清新凉爽。道路绿化首先要选好绿化树种。用于道路绿化的树种,一般应选择树干通直,树冠整齐,枝叶茂密,耐烟耐尘,抗风、抗雪力强,生长快,稳定时期长,不污染环境容易成活,适宜当地生长的树种。由于道路各地段条件不同,土壤有别,有的是干燥的山岭,有的则是 Road greening generally refers to the greening of roads, railways and local roads. Greenery roads can regulate the climate, wind and sand, smoke soot, clean the air, beautify the environment, increase forest yields, can prevent wind, rain, snow, road protection, solid subgrade, favorable traffic. Summer has thick leaves shading, so pedestrians feel fresh and cool. Greening the road must first select a good tree species. Tree species used for road greening should generally be selected to be trunk straight, with tidy crown, dense foliage, good resistance to dust, wind, strong snow resistance, fast growth, long stable period, easy to survive without polluting the environment and suitable for local growth species. Due to the different conditions of different sections of the road, different soil, some dry mountain, others are