绿化树种对大气污染的净化修复能力研究

A study on the capacity of trees species for the purification and restoration of air pollution

依据植物对大气污染的修复能力来选择绿化植物是减轻大气污染物的重要途径和手段。本研究通过测定污染较严重的工业区内主要绿化树种叶片内的大气污染物含量,来反映大气污染的水平和植物对大气污染的修复吸滞能力。结果表明:绿化树种对大气污染具有很强的吸收修复能力,并依污染气体和树种的不同具有明显差异。修复大气SO2污染能力强的树种有:毛白杨、旱柳、绒毛白蜡;修复大气氯污染能力强的有:榆树、山桃、毛白杨、枫杨、皂角、卫矛、沙枣;修复大气氟污染能力强的有:榆树、绒毛白蜡、刺槐、旱柳。

To select green plants according to their capacity for restoration of air pollution is a very important way to reduce air pollutants.The study measures the contents of air pollutants in the trees＇ leaves in certain heavily polluted industrial areas to show the degrees of air pollution and the capacity of green plants for the purification and restoration of air pollution.The results show that green trees have the high ability of restoration and absorption,which has a significant difference in view of different air pollutants and tree species.The trees which have high restoration ability for sulfur include Populus tomentosa,Salix matsudana and Fraxinus velutina.The trees which have high restoration ability for chloride include Ulmus pumila,Prunus davidiana,Populus tomentosa,Pterocarya stenoptera,Gleditsia japonica,Euonymus alatus and Elaeagnus angustifolia.The trees which have high restoration ability for fluoride include Ulmus pumila,Fraxinus velutina,Robinia pseudoacacia and Salix matsudana.