Spatiotemporal variation and influencing factors of air pollution in Anhui Province

作者：Li Jia, Sun Jianping, Yanfang Fu · 发表于：Heliyon · 年份：2023 · DOI：10.1016/j.heliyon.2023.e15691 · 被引用次数：15 · 研究领域：Air Quality and Health Impacts、Atmospheric chemistry and aerosols、Air Quality Monitoring and Forecasting

Anhui Province locates in the Yangtze River Delta region. The spatial difference between the north and the south is significant, and the air quality is improved over time. Studying the spatial and temporal changes of air pollution and its influencing factors for the coordinated control of air pollutants in the Yangtze River Delta region is significant. This study used the annual and monthly average data of six pollutants, PM 2.5 , PM 10 , O 3 , NO 2 , SO 2 , and CO, in Anhui Province and various cities from 2015 to 2021 and analyzed the spatiotemporal change characteristics using Excel and GIS software. Meanwhile, this paper used the SPSS correlation analysis method to analyze the correlation between pollutants and meteorological factors and analyzed the impact of economic development and environmental protection policies. The results are shown below. (1) The concentrations of SO 2 , NO 2 , and CO showed an overall downward trend at an interannual level. Meanwhile, the concentrations of PM 10 and PM 2.5 first increased slowly before 2017 and then declined, while the concentrations of O 3 increased significantly before 2018 and then declined slowly. On a monthly scale, O 3 presented an M-shaped change, while the other five pollutants basically presented a U-shaped change mode. The top monthly pollutants in each city followed the order of PM 2.5 , O 3 , PM 10 , and NO 2 . (2) PM 2.5 and PM 10 showed apparent characteristics of high concentrations in the north and low concentrat...