重庆市主城区基于动态交通流的机动车污染物排放特征  

Emission characteristics of vehicles exhaust in Chongqing urban area based on dynamic traffic flow

作　　者：吕改艳 张卫东 李振亮 吕平江 蒲茜 袁睿 胡伟 LYU Gaiyan;ZHANG Weidong;LI Zhenliang;LYU Pingjiang;PU Xi;YUAN Rui;HU Wei(Chongqing Academy of Environmental Sciences,Chongqing 401147)

机构地区：[1]重庆市生态环境科学研究院,重庆401147

出　　处：《环境污染与防治》2021年第11期1364-1370,共7页Environmental Pollution & Control

基　　金：国家重点研发计划项目(No.2018YFC0214005);重庆市社会事业与民生保障科技创新专项重点研发项目(No.cstc2017shms-zdyfX0072);重庆市基本科研业务费计划项目(No.2016-hky-jcyj-01701)。

摘　　要：基于重庆市主城区动态交通流数据、机动车实际行驶数据以及车辆检测数据,采用国际机动车排放(IVE)模型结合道路长度的方法,建立了重庆市主城区机动车污染物的排放清单,并利用ADMS-Urban扩散模型对NO_(x)排放数据进行了验证。结果表明:2017年主城区机动车CO、VOCs、NO_(x)和PM 10的排放量分别为22.80万、1.25万、4.18万、0.42万t/a,小型客车、轻型货车和重型货车对各类污染物的贡献总和均超过85%;机动车污染物排放集中在内环以内的核心区域,呈现由中心向四周放射状递减的趋势。27个监测站点的NO_(2)监测值与模拟值具有较好的相关性,说明NO_(x)模拟结果基本合理,机动车NO_(x)排放对重庆市主城区大气NO_(2)的贡献显著,开展机动车污染防治专项工作可成为重庆市主城区NO_(x)削减的有效途径。Based on dynamic traffic flow data,actual driving data and vehicle detection data,this paper established the emission inventory of pollutants from motor vehicle exhaust in Chongqing urban area using international vehicle emission(IVE)model and the length of urban road.The inventory of NO_(x) emission was then verified with ADMS-Urban dispersion model.The results indicated that the total vehicle emissions of CO,VOCs,NO_(x) and PM 10 in Chongqing urban area in 2017 was 22.80×104,1.25×104,4.18×104 and 0.42×104 t/a respectively.The total pollutant emissions of small passenger cars,light-duty vehicles and heavy-duty vehicles accounted for more than 85%of the pollutant emissions of all motor vehicles.The emission intensity of pollutants from motor vehicle exhaust decreased progressively from the inner rings to outwards of urban area,and the emissions mainly concentrated in core-area of the inner rings.There was a good agreement between simulated and measured values for NO_(2) of 27 air quality monitoring stations,indicating that the NO_(x) simulation results were basically reasonable.The NO_(x) emissions from motor vehicles in the Chongqing urban area contributed significantly to NO_(2) in the regional atmospheric environment.The special project of motor vehicle emission control might serve as an effective way to reduce NO_(x) in Chongqing urban area.

关 键 词：交通流 国际机动车排放模型 排放特征 排放清单 模型验证 

分 类 号：X734.2[环境科学与工程—环境工程]