伊宁市空气质量现状分析

Analysis of Air Quality in Yining City

通过对伊宁市空气质量数据的统计分析,结果表明,2015-2018年,伊宁市空气质量呈现逐年恶化态势,PM2.5浓度逐年上升,超标现象日益凸显。冬季PM2.5污染特征显著,且重污染天气易发。NO2浓度呈现上升趋势,秋冬季超标天数日益增多。冬季多发的PM2.5污染及秋冬季多发的NO2是制约伊宁市AQI提升的关键因素。

From 2015 to 2018, The air quality has been deteriorating year by year in Yining, and the PM2.5 concentration has been increasing year by year.In winter, PM2.5 pollution is characterized significantly, and heavy pollution weather is prone to occur. The concentration of NO2 showed an increasing trend, and the number of days exceed the standard in autumn and winter increased day by day. The frequent PM2.5 pollution in winter and frequent NO2 in autumn and winter have become the key factors restricting the improvement of AQI in Yining City.