国家中心城市交通运输业碳排放效率研究

为改善交通运输业碳排放效率促进城市低碳经济发展,以在区域发展中发挥引领作用的九个国家中心城市为研究对象,运用包含非期望产出的Super-SBM模型和Malmquist-Luenberger生产率指数,从静态和动态两个角度对研究区2005—2016年交通运输业碳排放效率进行了测算,并进一步分析了碳排放效率变化的影响因素....

The study on carbon emission efficiency of transportation industry in national central city

In order to improve the carbon emission efficiency of transportation industry and promote the development of urban low-carbon economy,nine national central cities which play leading roles in regional development were taken as the study objects.Using Super-SBM model with undesirable outputs and Malmquist-Luenberger productivity index,the carbon emission efficiencies of transportation industry were calculated from the static and dynamic perspectives in the study areas from 2005 to 2016.In addition,the influencing factors of the changes in carbon emission efficiencies were further analyzed.The results showed that the annual average carbon emission efficiency of transportation industry in the national central cities was low(range from 0.4824 to 0.7609),indicating that carbon emission efficiency of transportation industry could still be improved.During the study period,the average of the carbon emission efficiency of transportation industry in the national central cities decreased in 2.98%per year.The technical efficiency which was affected by the improvement of pure technical efficiency and scale efficiency increased in 1.43%per year,and the average of technological level decreased in 4.35%per year,suggesting that the key to improve the carbon emission efficiency was to promote technological progress.Compared with the national central cities in the western and central zones,the national central cities located in the eastern coastal zone had a higher annual average growth rate of carbon emission efficiency in transportation industry.The carbon emission efficiencies in nine cities were different,and the influencing factors of the changes in carbon emission efficiencies in nine cities were different as well.Therefore,the energy conservation and emission reduction policies for the transportation industry should be formulated according to the local situations and conditions.