| The Yangtze River Economic Belt covers 11 provincial administrative regions in three major regions of China.It has a very important ecological status and development potential.Industry is the pillar of the real economy.It is an important supporting force for the coordinated development and green high-quality development of the Yangtze River Economic Belt to promote industrial transformation and upgrading through the improvement of industrial green total factor productivity.Green and high-quality industrial development should be taken as the main line of the Yangtze River Economic Belt’s development.New ways to coordinate ecological environmental protection and sustained economic growth should be explored actively.Based on the above background,this thesis starts from balancing the differences in industrial development among regions,analyzes the industrial development status of various provinces and cities through measuring the green total factor productivity of industries in the Yangtze River Economic Belt,and links the bidirectional technological exchange and convergence between regions with the empirical analysis of regional coordinated development.The main work is showed as follows.Firstly,the SBM-ML model of the nonparametric method is used to measure the growth rate of industrial green total factor productivity in the Yangtze River Economic Belt to reflect the dynamic development of industrial ecology,and explore the mechanism of technology convergence in balancing the growth rate of green total factor productivity.Secondly,the three-stage SFA model of the parametric method is used to measure the green total factor productivity levels in the two dimensions of energy and economic,and analyze their temporal evolution trends,geographical spatial differences and influencing factors to reflect the actual efficiency level of industrial production.Thirdly,from the perspective of balancing the level of green total factor productivity in various provinces and cities,taking the bidirectional technology exchange and convergence of regional industrial industries as the connotation,three technology convergence development models were constructed to simulate the spatial distribution of industrial output and pollution emission.With the different emphasis on economic efficiency and energy consumption efficiency as the directional selection of technology convergence,these three models were designed: focusing on energy efficiency,focusing on economic consumption efficiency and balance.Fourthly,by comparing the differences between the technology convergence development model and the existing technology development model,as well as the differences between the three technology convergence development models,this thesis analyzes the differential impact of the technology convergence development model on the industrial development of various provinces and cities in the Yangtze River Economic Belt,and explores the suitable directional selection of technology convergence for each province and city.Finally,based on the above research results,relevant suggestions for the industrial development of the Yangtze River Economic Belt are proposed.The main conclusions of this thesis are as follows: firstly,the growth rate of green total factor productivity in the central and western provinces and cities of the Yangtze River Economic Belt is relatively fast.The green development of industry in the midstream region continues to be stable,while the fluctuations in the upstream and downstream regions are significant.Technology convergence can significantly balance the regional differences of the growth rate of green total factor productivity.Secondly,there are significant differences in the level of industrial green total factor productivity in the Yangtze River Economic Belt measured from the two dimensions of energy and economy,but both show a trend of increasing year by year and decreasing sequentially from downstream to upstream.When analyzed green total factor productivity levels from the perspective of actual economic production processes,there is an obvious gradual "catch-up effect",that is,provinces and cities with lower green total factor productivity levels are moving towards provinces and cities with higher.Thirdly,the improvement of government spending,openness and economic development level have a significant positive impact on the level of green total factor productivity in the Yangtze River Economic Belt,while further expanding the proportion of non-state industrial enterprises,environmental regulation and financial market flexibility have not provided support for the improvement of green total factor productivity.Fourthly,compared to existing technology development model,the technology convergence development model can significantly reduce regional differences in green total factor productivity levels and promote coordinated regional development.Fifthly,there are significant differences in the impact of technology convergence development models on the industrial development of various provinces and cities in the Yangtze River Economic Belt.Each province and city should choose the corresponding technology convergence development model based on its own actual situation. |
