Research on the Impact of Air Pollution Prevention and Control on Air Quality in the Beijing-Tianjin-Hebei Region
Through the temporal and spatial distribution analysis method of AQI,as well as the Pearson and Spearman correlation coefficient methods,this paper studied the numerical changes of air pollutants and air quality trends in the Beijing-Tianjin-Hebei region over the past eight years,the following conclusions were drawn:(1)from the perspective of spatial distribution,the southeast region of the Beijing-Tianjin-Hebei region is a heavily polluted area,while the concentration in the northern region is lower than the overall level.The AQI in the Northern region is the lowest compared to the Beijing-Tianjin-Hebei region,the average AQI in the Central region is intermediate,and the average AQI in the Southern region is the highest;(2)from the perspective of seasonal distribution,the maximum values of pollutants such as AQI,NO2,CO,and SO2 all appear in winter,and the minimum values appear in summer;conversely,the maximum value of O3 appears in summer,and the minimum value appears in winter.Compared to around 2014,there has been a very significant improvement in air quality.
Beijing-Tianjin-Hebei regionair pollution prevention and controlair quality
NETL
NSTL
万方数据
