Journal
ENVIRONMENTAL POLLUTION
Volume 158, Issue 2, Pages 394-400Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2009.09.002
Keywords
Emission inventory; Vehicular emissions; Inventory uncertainty; Mega cities; China
Categories
Funding
- China National Nature Science Foundation [50778100]
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Multiyear inventories of vehicular emissions in Beijing, Shanghai and Guangzhou from 1995 through 2005 have been developed in this paper to study the vehicle emissions trends in China's mega cities during the past decade. The results show that the vehicular emissions of CO, HC, NOx and PM10 have begun to slow their growth rates and perhaps even to decline in recent years due to the implementation of measures to control vehicular emissions in these cities. However, vehicular CO2 emissions have substantially increased and still continue to grow due to little fuel economy improvement. Passenger cars and large vehicles (including heavy duty trucks and buses) are the major sources of vehicular CO2 and CO emissions while large vehicles were responsible for nearly 70% and 80% of the vehicular NOx and PM10 emissions in these mega cities. Motorcycles are also important contributors to vehicular emissions in Guangzhou and Shanghai. (C) 2009 Elsevier Ltd. All rights reserved.
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