2016~2020年德阳市空气质量变化及特征分析

Analysis on Changes and Characteristics of Air Quality in Deyang City from 2016 to 2020

采用德阳市2016~2020年空气质量监测点数据,分析了空气质量变化情况及主要污染物特征。结果表明:德阳市近五年来环境空气质量有了明显改善,污染天数明显减少,AQI指数及主要污染物浓度降低;以月均值分析表明主要污染物浓度和空气质量优良天数呈现明显月度和季节性特征;首要污染物是PM、PM和O,提高环境空气质量可依据主要污染物的时间特征加大力度采取有针对性的污染防治措施。

Based on the data of air quality monitoring points in Deyang City from 2016 to 2020, the changes of air quality and the characteristics of main pollutants are analyzed. The results show that the ambient air quality of Deyang City has improved significantly in recent five years, the number of pollution days has decreased significantly, and the AQI index and the concentration of major pollutants have decreased;the monthly mean value analysis shows that the concentration of main pollutants and the number of days with good air quality show obvious monthly and seasonal characteristics;the most important pollutants are PM, PMand O, to improve the ambient air quality, targeted pollution control measures can be taken according to the time characteristics of the main pollutants.