Study on the Spatiotemporal Distribution Characteristics of Fine Particulate Matter in Urban Neighborhoods and Its Correlation with Meteorological Factors:A Case Study of Furong Community in Hefei
The study of the spatiotemporal distribution of fine particulate matter in urban neighborhoods is of great significance to the living standards of residents and the construction of healthy cities.This study obtained the spatial distribution characteristics of fine particulate matter(PM2.5)in the Furong community of Hefei through vehicle-mounted mobile monitoring,determined the fixed test points on this basis,and monitored PM2.5 concentrations at 14 fixed monitoring sample points in different seasons and under different meteorological conditions,to further investigate the characteristics of the spatiotemporal distribution of PM2.5 in the neighborhoods,as well as the correlation between the PM2.5 concentration and the meteorological factors.The results showed that:1)The PM2.5 concentration in this urban neighborhood is seasonally high in winter,followed by autumn,and low in summer;the intraday trend is"W"-type;2)The regional PM2.5 concentration is in the sequence of the construction area＞the main road area,road intersections＞branch road areas＞green areas;3)The PM2.5 concentration is negatively correlated with air temperature and wind speed,and showed a positive correlation with relative humidity.The results of the study can provide a scientific basis for the fine management of fine particulate matter in the later stage and for the improvement of air quality in the neighborhoods and the level of neighborhood planning.
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