Vehicular emissions inventories from 1990 to 2009 in the 12 typical cities selected in China were calculated. The vehicular emissions trends in each city were analyzed on the basis of simulation results. The results showd that, during 1990 and 2009, the CO, VOCs, NOχ and PM emission factors in 12 cities reduced by 57%~81%、 53%~78％、 22%~74% and 31%~76%, respectively. CO and VOCs emissions were observed a significant growth from 1990 to 2000, and then presented a decrease trend. NOχ and PM emissions showed continued growth trend in most cities. Compared to the levels in 1990, CO, VOCs, NOχ and PM emissions of the 12 cities in 2009 increased by 1.0, 1.4, 3.2 and 3.3 times, respectively. Gasoline vehicles were the major source of CO and VOCs emissions. LDA-G, MDTB-G and HDTB-G contributed 70%~90% and 50%~85% to CO and VOCs emissions, and the share of LDA-G increased significantly from 1990 to 2000. LDA-G, MDTB-G, MDTB-D and HDTB-D contribute 80%~90% to NOχ emissions, and the contribution of MDTB-D and HDTB-D increased from 57.8% to 72.7% on average. MDTB-D and HDTB-D were responsible for 70%~90% of PM emissions. In addition, the contribution of motorcycles should not be neglected in several cities.
motor vehicleemission inventoryemission characteristicscity scale
NETL
NSTL
维普
万方数据
