道路两侧不同树种对大气中可吸入污染颗粒物的吸附效应分析研究

Adsorption Effect of Different Tree Species on Inhalable Polluted Particles in Atmosphere on Both Sides of Road

不同树种对大气中可吸入污染颗粒物的吸附效应存在显著差异,其中,白杄、油松对PM_(10)的吸附效应较强,白杄对PM_(1.0)的吸附效应较强,油松对TSP的吸附效应较强,白杄、油松对PM_(2.5)的吸附效应较强;而国槐对上述可吸入污染颗粒物的吸附效应较弱;白毛杨的吸附效应最弱。因此可以得出结论,气孔密集、绒毛多的叶片有利于树种对污染颗粒物的吸附,其中,白杄、油松的综合吸附效应最好,能够有效降低大气中可吸入污染颗粒物的含量,是优良的道路两侧绿化树种。

The results showed that there were significant differences in the adsorption effects of different tree species on PM10, PM1.0, TSP, and PM2.5. The adsorption effects of betula platyphylla and pinus tabulaeformis on PM10, PM1.0, TSP, and PM2.5 were stronger, while the adsorption effects of Sophora japonica and Pinus tabulaeformis on PM2.5 were weaker. Poplar has the weakest adsorption effect. Therefore, it can be concluded that the leaves with dense stomata and more villus are beneficial to the adsorption of polluted particulate matter by tree species. Among them, the comprehensive adsorption effect of betula platyphylla and pinus tabulaeformis is the best, which can effectively reduce the content of inhalable polluted particulate matter in the atmosphere, and it is an excellent greening tree species on both sides of the road.