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行道树是按一定株距种植在道路两旁,造成浓荫的乔木树种。它在创造优美的城市环境和改善城市生态条件上发挥十分重要的作用。据分析,一个理想的行道树种应满足以下4项基本要求:(1)树干端直,冠大荫浓,同时必须具备至少2米或以上的枝下高度,方便车辆和行人在其下通行;(2)耐水湿、耐干旱瘠薄,创伤后恢复快,能适应粗放管理要求;(3)耐烟尘、抗污染,能克服城市“贴地层下垫面”(气象学术语,意指大气2米以下范围空间)高温、低湿小气候条件的不良影响;(4)移栽成活率高,返青早,生长速度快。
Road trees are planted at a certain distance on both sides of the road, resulting in shade tree species. It plays a very important role in creating a beautiful urban environment and improving urban ecological conditions. According to the analysis, an ideal tree species should meet the following four basic requirements: (1) Trunk straight, crown shade, at the same time must have at least 2 meters or above the height of the branches to facilitate the vehicles and pedestrians under its passage; (2) It is resistant to water and drought, infertile and infertile, and has rapid recovery after trauma. It can adapt to extensive management requirements. (3) It is resistant to dust and pollution and can overcome the city’s “underlying ground surface” The following range of space) high temperature, low humidity microclimate adverse effects; (4) high survival rate of transplanting, returning early green, fast growth.