Study on CO2 emission factors of road transport in Chinese provinces
Lü Chen1, ZHANG Zhe2, CHEN Xu-mei3, MA Dong4,5, CAI Bo-feng1
1. Chinese Academy of Environmental Planning, Beijing 100012, China; 2. China-UK Low Carbon College, Shanghai Jiaotong University, Shanghai 200240, China; 3. China Academy of Transportation Sciences, Beijing 100084, China; 4. State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation, Chinese Research Academy of Environmental Sciences, Beijing 100012, China; 5. School of Environment, Tsinghua University, Beijing 100084, China
Abstract:This study simulated the CO2 emission factors of typical motor vehicles based on the localized MOVES (Motor Vehicle Emission Simulator) model, and established the evaluation equation of the relationship between emission factors and velocity. Combined with the average speed of road network in each province and the CO2 emission factors of regional power grid, the CO2 emission factors of different vehicles in 31provinces of China were obtained. Meanwhile, the vehicle CO2 emission factors database for per passenger turnover and per freight turnover in each province was established, combined with the passenger capacity and occupancy rate of passenger cars, the load capacity and cargo carrying rate of trucks, The results of average CO2 emission factors of different motor vehicles were shown as follows: 0.880kgCO2/km of diesel bus, 0.877kgCO2/km of heavy-duty truck, 0.676kgCO2/km of electric bus, 0.508kgCO2/km of medium-duty truck, 0.374kgCO2/km of light-duty truck, 0.227kgCO2/km of diesel passenger car, 0.216kgCO2/km of mini-duty truck, 0.203kgCO2/km of gasoline passenger car, 0.108kgCO2/km of electric passenger car and 0.062kgCO2/km of motorcycle. Compared with gasoline minibuses, the per capita CO2 emissions of diesel buses and electric buses reduced by 63% and 73% respectively. The per capita CO2 emissions of electric passenger car fell 46% and 51% compared with gasoline and diesel passenger car. Higher vehicle stock and more frequent road congestion of road network led to higher vehicle CO2 emission factors in Shanghai, Beijing and Chongqing. Hence, it was an effective way to reduce road transport CO2 emissions by advocating public transport, reducing the use frequency of private cars, promoting electric vehicles and increasing speed by reducing road congestion of road network.
吕晨, 张哲, 陈徐梅, 马冬, 蔡博峰. 中国分省道路交通二氧化碳排放因子[J]. 中国环境科学, 2021, 41(7): 3122-3130.
Lü Chen, ZHANG Zhe, CHEN Xu-mei, MA Dong, CAI Bo-feng. Study on CO2 emission factors of road transport in Chinese provinces. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(7): 3122-3130.
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