成渝地区典型中小型城市空气质量分析——以内江市为例

Analysis of air quality of typical small and medium-sizedcities in Chengdu-Chongqing area——Taking Neijiang as an example

根据2015-2018年国家空气质量监测系统监测数据,按时间序列分析内江市空气质量的变化,结果表明内江市采取的大气污染防治措施使得内江市空气质量显著改善,优良天数比例上升,重污染天数明显减少,PM 10、PM 2.5、SO 2浓度明显下降,秸秆焚烧和春节烟花燃放影响显著改善,持续性污染形势明显缓解。分析结果为成渝地区及中小型城市大气污染防治研究提供了参考。

According to the monitoring data of the national air quality monitoring system from 2015 to 2018,the changes in air quality in Neijiang City were analyzed in time series.The results show that the air pollution prevention measures adopted by Neijiang City have significantly improved the air quality in Neijiang City,the proportion of good air quality days has increased,and the number of heavy pollution days significantly reduced.PM 10,PM 2.5,SO 2 concentration decreased significantly,the impact of straw burning and fireworks use during the Spring Festival was significantly mitigated,and the persistent pollution situation was significantly alleviated.The analysis results provide a reference for the air pollution control in Chengdu-Chongqing area and small and medium-sized cities.