| In recent years,with the continuous deterioration of the global climate,greenhouse gas emission reduction has become the fundamental measures for countries to cope with climate change.It is also a necessary decision made by people after re-examining and thinking about the historical process.The proposal of carbon neutralization goal not only demonstrates the responsibility of our major responsible country,but also conforms to the requirements of green and low carbon development in the new development concept.Although the goal of carbon neutrality was proposed in 2020,the concept of low carbon and environmental protection had been widely spread in China as early as the 1990s.Therefore,this paper combined "carbon neutrality" with carbon emission efficiency,selected the relevant data of Chinese provinces from 2005 to 2020,and combined the goal of carbon neutrality with carbon emission efficiency.A new input-output index system with DEA was built.On this basis,three-stage DEA model was used to measure the carbon emission efficiency in every province in our country under carbon neutralization target.The influence of industrial structure,urbanization level and environmental regulation on carbon emission efficiency was analyzed according to the calculation results,and the spatial evolution characteristics and improvement path of carbon emission efficiency were analyzed.Finally,the Malmquist-Lunenberger index model was used to analyze the dynamic carbon emission efficiency.The following conclusions can be drawn from the analysis:(1)The goal of "carbon neutralization" has a inhibitory effect on the carbon emission efficiency of some provinces,but it promotes the improvement of carbon emission efficiency from the perspective of China as a whole.The calculation results of the efficiency value in the third stage of DEA model show that although the efficiency value of some regions in China is low,the overall carbon emission efficiency is high.The goal of becoming "carbon neutral" by 2060 is highly feasible.(2)The test results of the second stage of SFA regression show that,compared with random factors,external environmental factors and management inefficiency have a greater impact on carbon emission efficiency.In SFA regression,industrial structure,urbanization level and environmental regulation all have a significant impact on the input of production factors.(3)There are obvious spatial differences in the carbon emission efficiency of Chinese provinces,showing the overall spatial evolution characteristics of east > central > west.The carbon emission efficiency of central and eastern regions shows an upward trend,while the eastern region shows a faster rise,while the western region shows a U-shaped growth.(4)On the improvement path,provinces with lower efficiency can improve carbon emission efficiency by optimizing the external environment and adjusting the proportion of input of production factors.At present,most of our provinces in industrial structure,urbanization level and environmental regulation are not in harmony with local carbon emission efficiency.The growth benefit brought by external environmental factors of provinces with lower efficiency has great room for improvement.At the same time,the analysis result of Malmquist-Lunenberger index model shows that technological efficiency inhibits the further improvement of carbon emission efficiency,and technological progress can be an indirect way to improve Chinese carbon emission efficiency.Based on the above conclusions and combined with the goal of "carbon neutrality",the corresponding policy suggestions are put forward for green economy,industrial structure,urbanization level,environmental regulation,low-carbon technology innovation and urban forest carbon storage: accelerate the development of green economy and improve the overall regional economic level;In the process of promoting the development of new urbanization,improve the effectiveness of urban agglomeration construction and environmental regulation;To promote the construction of a modern industrial system as an opportunity to accurately implement the adjustment of the industrial structure in the new development stage;The construction and improvement of low-carbon technology innovation system should be strengthened under the guidance of innovation drive.With the overall goal of strengthening ecological civilization construction,efforts should be made to enhance the capacity of forest ecosystem to increase carbon sequestration. |
