苏南城市空气质量污染特征及趋势分析研究

利用2013年-2015年苏南5市空气自动站监测数据,分析了该地区空气质量的污染特征和变化趋势.研究发现:2013年-2015年,苏南5市空气优良率为56.9%～68.9%,PM2.5是主要污染物;沿长江向东,空气污染逐步偏向光化学污染类型.从时间上可知,呈现冬季以PM2.5污染为主、春夏季以O3污染为主的特征;PM2.5等4项污染物24小时呈现双峰.从趋势上可知,PM2.5等5种污染物浓度呈下降趋势,O3污染有所加重.同时,各市也表现了不同的情况,管理上需要区别对待.

Analysis of Characteristics and Trendof Air Quality Pollution in Cities of Southern Jiangsu

Analysis of characteristics and trend of air quality pollution in this area is based on the monitoring data from air automatic stations in five cities of Southern Jiangsu between 2013 and 2015.It is concluded that the air excellent and good rates in five cities of Southern Jiangsu range from 56.9% to 68.9% between 2013 and 2015 while PM2.5 is the main pollutant.Along the Yangtze River to the east,air pollution gradually tends to be the type of photochemical pollution.From the perspective of time,PM2.5 is the main pollution in winter while O3 is the main pollution in spring and summer.Monitoring data of 4 pollutants including PM2.5 shows the characteristic of two peaks within 24 hours.From the perspective of trend,concentration of five pollutants including PM2.5 shows a downward trend while O3 pollution has been aggravated.Meanwhile, each city shows a different situation so the management should be implemented respectively.