Spatial and Temporal Variability of Atmospheric Particulate Matter in Bazhong City from 2018 to 2022
LI Yuanyuan
LI Zhijun
ZHANG Shaobin
ZHANG Cuiying
TANG Meng
TAN Bihua
Abstract：Based on the data of ambient air automatic quality monitoring stations in Bazhong City from 2018 to 2022,this study analyzes the characteristics of the air quality index and the spatial temporal distribution varations of air particulate matter in Bazhong City.The results showed that the annual atmospheric particulate matter pollution in Bazhong City from 2018 to 2022 was relatively stable,which showed the excellent and good rate of atmospheric environment quality higher than 90 percent.The inter-annual variability of PM2.5 was similar to the PM10,which all showed a downward trend.And the aver-age concentration of atmospheric particulate matter decreased in the order of winter,spring,autumn and summer respectively.PM25 in winter occupied a large proportion stably,as the chief pollutant of atmosphere pollution in Bazhong City,with the pro-portion basically above 80％.The annual PM2.5 and PM10 ratio indicated that atmosphere particulate matter pollution come from manmade pollution mainly.There were significant seasonal and monthly variations of the ratio which showed particulate matter pollution was mainly affected by meteorological conditions and human activities.
Keywords：atmospheric particulate matterspatial and temporal variabilitymajor ppollutant
Publication Date：2024-12-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 81-86 )