Spatiotemporal variation and source analysis of air pollutants in the Harbin-Changchun (HC) region of China during 2014e2020

查看全文 作　　者：Yulong [1]Wang;Youwen [2]Sun;Zhiqing [1]Zhang;Yuan [1]Cheng

机构地区：[1]State Key Laboratory of Urban Water Resource and Environment,School of Environment,Harbin Institute of Technology,Harbin,150090,China;[2]Key Laboratory of Environmental Optics and Technology,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei,230031,China

出　　处：《Environmental Science and Ecotechnology》索引2021年第4期,共8页

基　　金：This work was supported by the National Natural Science Foundation of China(41805097). 摘　　要：This study analyzed the characteristics of air pollution and specific pollution periods within the HarbinChangchun(HC)metropolitan area during 2014e2020.Regarding annual,seasonal,and monthly variations of the six pollutants,the change trend in 11 cities of HC showed strong consistency in spatial distribution.The western cities(Songyuan,Daqing,and Siping)were vulnerable to dust storms from Inner Mongolia.The concentrations of all air pollutants,except O3-8h,showed downward fluctuation trends from 2014 to 2018 and remained stable from 2018 to 2020 in terms of annual variations.The interannual trend of significant reductions in SO2 and SO2/PM2.5 during the heating period indicated that strict emission reduction measures posed by the government were highly successful.The ratio of PM2.5/SO2 was used to identify open biomass burning(OBB),which showed a double peak(OctobereNovember(OcteNov),MarcheApril(MareApr)).The burning prohibition shifted the OBB from OcteNov to Mar eApr. 关键词：Air pollution Spatiotemporal variations Harbin-changchun metropolitan area Open biomass burning

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Spatiotemporal variation and source analysis of air pollutants in the Harbin-Changchun (HC) region of China during 2014e2020

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