根据收集的南昌市移动源活动水平数据,采用合适的估算方法、排放因子和GIS技术,建立了南昌市2007—2014年移动源排放清单,并对2014年移动源清单进行了空间化处理与分析,空间分辨率为1 km×1 km.结果表明,2007—2014年南昌市移动源共向大气排放CO、HC、NO_x、PM_(2.5)、PM_(10)、SO_2分别为18.26×10~4、5.07×10~4、18.46×10~4、0.99×10~4、1.08×10~4、3.31×10~4t.其中,2014年移动源向大气中排放的这6种污染物总量分别为2.14×10~4、0.76×10~4、1.97×10~4、0.08×10~4、0.09×10~4、0.55×10~4t.道路移动源中,汽油小型客车是CO、HC和SO_2最大的贡献源,排放量分别占机动车排放总量的55.1%、78.5%和56.1%;柴油重型货车是NO_x、PM_(2.5)和PM_(10)排放贡献率最大的车型,分别占43.2%、40%和40%.非道路移动源中,小型拖拉机对CO、HC、NO_x、PM_(2.5)和PM_(10)的贡献率均较大,分别占非道路移动源排放总量的29.9%、26.9%、23.4%、29.5%和29.8%;SO_2排放主来源于船舶,占非道路移动源SO_2排放总量的45.1%.高污染排放集中的区域,主是青山湖区、西湖区和东湖区.
Based on the collected activity data and emission factors,the emission inventory for the period 2007—2014 was developed by using an appropriate estimation methods. Spatial distribution of emission inventory at 1 km resolution was estimated for the base year 2014 using and GIS techniques. Results showed that the total annual emissions of CO,HC,NO_x,PM_(2.5),PM_(10) and SO_2for Nanchang during 2007—2014 were 18.26×10~4,5.07×10~4,18.46×10~4,0.99×10~4,1.08×10~4,and 3.31×10~4t,respectively,while those from mobile source in 2014 was 2.14×10~4,0.76×10~4,1.97×10~4,0.08×10~4,0.09×10~4,and 0.55×10~4t,respectively. For on-road mobile source,gasoline passenger cars were the largest contributors for CO,HC and SO_2,accounting for 55.1%,78.5% and 56.1%,respectively,while diesel heavy duty trucks were the largest contributors for NO_x,PM_(2.5)and PM_(10),accounting for 43.2%,40% and 40%,respectively. For non-road mobile source,small tractors were the biggest contributors for CO,HC,NO_x,PM_(2.5)and PM_(10),accounting for 29.9%,26.9%,23.4%,29.5% and 29.8%,respectively. SO_2 was mainly emitted from ships with contribution of 45.1%. The areas with high pollution emissions were mainly located in Qingshanhu District,Xihu District and Donghu District.