低标准道路绿化对城市大气颗粒物污染的影响

对长沙市的道路绿化情况、道路低空的TSP污染情况和绿化带土壤的侵蚀情况进行研究，对低标准的绿化带进行了数值评价；测定和分析了不同评价数值绿化带土壤侵蚀对道路低空TSP的影响．研究表明：低标准道路绿化与道路低空大气颗粒物污染成正相关，有非常显著意义．对长沙市绿化带年土壤侵蚀量进行计算，约为90t／a．成为长沙市大气颗粒物污染的重要来源．对城市道路绿化提出了修订新标准的建议．

Effect of Low Standard Road Green on the Atmospheric Particulate Pollution

The pollution caused by atmospheric particulate matter has become one of the most prominent problems in city. In this paper the writers beliered that making road green in Changsha , the low-altitude TSP pollution of main roads, and soil erosion of green area had been researched. The numerical assessment on green area of low standard was conducted. The affection made by green area indifferent assessed value to the low-altitude TSP has been measured and analyzed. The research indicates that green area of low standard has a direct relationship with the pollution caused by atmospheric particulate matter. Meantime, the amount of soil erosion of green area in Changsha, which is the main source of the pollution caused by atmospheric particulate matter, has been calculated. The sum is about 90 tons per year. Furthermore, it was suggested that a new standard for making roads green in the city should be planned and designed.