四川省 PM2.5 污染的時(shí)空特征與影響因素研究
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關(guān)鍵詞： PM2.5 污染；時(shí)空特征；影響因素；四川省
中圖分類號(hào)：X513 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1008-9500（2025）06-0185-03
DOI： 10.3969/j.issn.1008-9500.2025.06.055
Study on the Spatiotemporal Characteristics and Influencing Factors of PM2.5 Pollution in Sichuan Province
CHEN Li1 ，YANG Xiao2 （1.Renhe Ecological Environment Monitoring Station of Panzhihua City; 2.CECEP（Panzhihua） Clean Tech Development Co.，Ltd.，Panzhihua 617O61， China）
Abstract：This study takes fine particulate matter （PM2.5） ）pollution in Sichuan province in 2O24 as the research object， andsystematicalyanalyzesitsspatiotemporaldistributioncharacteristicsand influencingfactors.Theresearchresults 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 patern of high in the east and low in the west，and PM2.5 pollution is influenced byacombinationofnaturalandhumanfactors.Amongnaturalfactors，lowwindspeed，inversionlayer，andvallyterain significantlyinhibit thedifusionof polutants;among humanfactors，industrial emisions，transportationemissions，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， providingascientificbasis forformulatingdiferentiatedpollutionpreventionandcontrolstrategies，which isof great significance for improving regional air quality and achieving sustainable development.
Keywords： PM2.5 pollution; spatiotemporal characteristics; influencing factors; Sichuan province
近年來(lái)，我國(guó)工農(nóng)業(yè)持續(xù)發(fā)展，城鎮(zhèn)化有序推進(jìn)，車(chē)輛保有量迅速增加，使得空氣污染形勢(shì)依然嚴(yán)峻，而細(xì)顆粒物（ PM2.5 ）是主要污染物之一。（剩余3278字）