摘要
Abstract
This study takes fine particulate matter(PM2.5)pollution in Sichuan province in 2024 as the research object,and systematically analyzes its spatiotemporal distribution characteristics and influencing factors.The research results indicate that the PM2.5 concentration in Sichuan province exhibits a seasonal variation pattern of high in winter and low in summer over time,and a spatial distribution pattern of high in the east and low in the west,and PM2.5 pollution is influenced by a combination of natural and human factors.Among natural factors,low wind speed,inversion layer,and valley terrain significantly inhibit the diffusion of pollutants;among human factors,industrial emissions,transportation emissions,and household emissions are the main sources of PM2.5 pollution,and the energy consumption structure with a high proportion of coal,the economic model dominated by heavy industry,and the high population density further exacerbate PM2.5 pollution.The research results reveal the spatiotemporal characteristics and influencing factors of PM2.5 pollution in Sichuan province,providing a scientific basis for formulating differentiated pollution prevention and control strategies,which is of great significance for improving regional air quality and achieving sustainable development.关键词
PM2.5污染/时空特征/影响因素/四川省Key words
PM2.5 pollution/spatiotemporal characteristics/influencing factors/Sichuan province分类
资源环境
