桂林市流动源对大气细颗粒物的贡献研究

在桂林市2013年机动车保有量数据的基础上,参考清华大学开发的中国多尺度大气污染排放清单模型(MEIC)中的排放因子,估算流动源对大气细颗粒物的贡献。结果表明:桂林市区和桂林3大区域的流动源PM_(2.5)排放量分别为71.96和118.87t;按使用的燃料来分,柴油燃料对桂林市区和桂林3大区域PM_(2.5)贡献率较大,分别为94.07%和90.44%;按机动车类型来分,桂林市区和桂林3大区域的流动源PM_(2.5)主要贡献车型均为重型载货车、大型载客车、中型载货车,3大车型PM_(2.5)贡献率之和均超过80%。

Study of Mobile Source Contribution to the Atmospheric Fine Particulate Matter in Guilin City

On the basis of motor vehicle ownership data of Guilin city in 2013,with reference to the emission factors in the China Multi-scale Model (MEIC) for Air Polluting Emissions Inventory developed by Tsinghua University,the contribution of mobile sources for atmospheric fine particles was estimated.The results showed that the amount of PM2.5 emitted from mobile sources was 71.96 and 118.87 t respectively in the downtown and three main areas of Guilin city.If classified according to the fuel types,diesel contributed more to the PM2.5 in the downtown and three main areas of Guilin city,namely,94.07％ and 90.44％ respectively.If classified according to the vehicle types,heavy duty truck,bus,and medium duty truck contributed more to the PM2.5,with the sum of contribution rate over 80％.