长江流域资源与环境 >> 2024, Vol. 33 >> Issue (6): 1325-1339.doi: 10.11870/cjlyzyyhj202406016

• 生态环境 • 上一篇    下一篇

长江经济带碳排放效率的时空演变、区域差异及影响因素研究

张娜1,孙芳城1,胡钰苓2   

  1. (1.重庆工商大学长江上游经济研究中心, 重庆 400067;2.兰州大学经济学院,甘肃 兰州 730000)
  • 出版日期:2024-06-20 发布日期:2024-06-26

Spatio-temporal Evolution, Regional Differences, and Influencing Factors of Carbon Emission Efficiency in the Yangtze River Economic Belt

ZHANG Na1, SUN Fang-cheng1, HU Yu-ling2   

  1. (1. Research Center for Economy of Upper Reaches of the Yangtse River, Chongqing Technology and Business University, Chongqing 400067, China; 2. School of Economics, Lanzhou University, Lanzhou 730000, China)
  • Online:2024-06-20 Published:2024-06-26

摘要: 在新的历史发展阶段,经济发展迫切需要低碳转型,节能减排和绿色低碳已成为我国经济发展的重中之重,提高碳排放效率是实现“双碳”目标的同时保持经济高质量发展的关键。以长江经济带108个城市为研究对象,采用考虑非期望产出的超效率SBM模型及Malmquist指数法测算碳排放效率,利用ArcGIS10.7的自然分断法和泰尔指数分析其时空演变特征和区域差异,然后构建空间杜宾模型,进一步探讨碳排放效率的影响因素。结果表明:(1)2005~2020年碳排放效率呈波动趋势,长江经济带碳排放效率整体不足,效率水平受技术和规模的影响大。(2)Malmquist指数显示,各区域全要素碳排放效率差距较大的关键原因在于各项效率指数相辅相成、相互推动以及减排技术发展的不平衡。(3)高碳排放效率区和较高碳排放效率区的城市数量增加,长江经济带集聚状态逐渐明显。(4)除经济发展水平外,其他各影响因素对碳排放效率都有显著正向或负向直接效应,并且经济发展水平、产业结构、绿色技术创新以及政府干预对效率的空间溢出效应明显。

Abstract: In the new stage of historical development, there is an urgent need for low-carbon transformation in economic development. Energy conservation and emission reduction, green low carbon have become the top priorities of China's economic development. Improving carbon emission efficiency is the key to achieve the carbon peaking and carbon neutrality goals while maintaining high-quality economic development. This paper took 108 cities in the Yangtze River Economic Belt as the research objects and used the super-efficiency SBM model considering unexpected output and the Malmquist index method to calculate carbon emission efficiency. Natural segmentation method of ArcGIS10.7 and Theil index were used to analyze the spatio-temporal evolution characteristics and regional differences. Finally, spatial Durbin model was constructed to further explore the influencing factors of carbon emission efficiency. The results showed that: (1) From 2005 to 2020, the carbon emission efficiency showed a fluctuating trend, and the overall carbon emission efficiency of the Yangtze River Economic Belt was insufficient. The efficiency level was greatly affected by technology and scale. (2) Malmquist index showed that the key reason for the significant gap of carbon emission efficiency among regions lied in the complementarity and mutual promotion of various efficiency indexes and the imbalance of emission reduction technology development. (3) The number of cities with the highest and higher carbon emission efficiency zones increased, and the agglomeration status of the Yangtze River Economic Belt was gradually becoming apparent. (4) Except for the level of economic development, other factors demonstrated significant positive or negative direct effects on carbon emission efficiency. The spatial spillover effects of economic development level, industrial structure, green technology innovation, and government intervention on carbon emission efficiency were indicated as significant factors.

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