城市道路绿化质量对土壤侵蚀量与大气颗粒物污染的影响

对长沙市的道路绿化状况、道路低空的TSP污染和绿化带滞尘情况以及绿化带土壤的侵蚀进行了研究,对低质量的绿化带进行了数值评价,测量了城区主要道路低空TSP浓度和绿化带滞尘量.研究表明,低质量道路绿化与道路低空大气颗粒物污染成正相关,相关系数r为0.75,有非常显著意义.同时对长沙市绿化带年土壤侵蚀量进行计算,总量约为90吨/年,已成为长沙市大气颗粒物污染的重要来源.

Effect of the Quality of Urban Road Green on the Soil Erosion and Atmospheric Particulate Matter Pollution

The circumstances of some roads in Changsha city,the lowaltitude TSP pollution of some roads,dust-retention effect and soil erosion of plants were investigated.A numerical assessment on green area of low quality was conducted.The low-altitude TSP of some roads and the amount of dust-retention in green areas in the city was measured.The research showed that green areas of low quality had a direct relationship with the pollution caused by atmospheric particulate matter(r =0.75).Meanwhile,the amount of soil erosion of green areas in Changsha,which is the main source of the pollution caused by atmospheric particulate matter,was calculated,and the sum was about 90 ton per year,which mainly results in atmospheric particulate pollution.