2019年四川省盆地区域道路移动源排放的空间和车型分布特征

The Spatial Distribution and Vehicle Type Contribution of On-road Vehicle Emissions in the Basin Area of Sichuan Province in 2019

为了解四川省盆地区域2019年道路移动源大气污染物排放规律,为移动源排放控制方向提供依据,使用COPERT模型对四川省盆地区域2019年道路移动源排放量进行模拟,比较不同地级市的排放特征,并分析了不同车型的贡献。结果表明,2019年四川省盆地区域道路移动源NO_(X)、CO、NH_(3)、SO_(2)、PM_(2.5)、PM_(10)和VOCs的排放量分别为20.7、28.6、0.4、0.04、1.0、1.4和5.5万t。各地区间的污染物排放量存在交大差异,但不同地区道路移动源排放的车型分布差异不大。从区域来看,川西平原地区移动源排放管控的重点应放在成都、德阳和德阳等城市,川东北地区的重点为南充和达州等城市,川南地区的重点为乐山和泸州等城市。从车型来看,移动源排放管控应主要集中在小型载客车和重型载货车两类车型。

In order to understand the emission rules of air pollutants from the on-road vehicle in the basin area of Sichuan province in 2019 and provide guidance for the control of vehicle emissions,the COPERT model was used to simulate the on-road vehicle emissions in the basin area of Sichuan province in 2019.The distribution of emissions among different cities and the contribution of different vehicle types were analyzed.Results showed that the emissions of NOX,CO,NH_(3),SO_(2),PM_(2.5),PM_(10) and VOCs from on-road vehicles were 207,286,4,0.4,10,14 and 55 kilotons,respectively.There were significant differences in the emission of pollutants in different cities,but the contributions of different vehicle types were similar in different cities.From the perspective of spatial distribution,the control of vehicle emission should be focused on Chengdu,Deyang and Mianyang in the western plain area,Nanchong and Dazhou in the northeastern Sichuan,Leshan and Luzhou in the southern Sichuan.From the perspective of vehicle type,the most urgent control targets should be passenger cars and heavy-duty trucks in the study area.