The Impact Of Transportataion Infrastructure On Green Total Productivity In China

At present,the high-speed growth mode at the cost of a large amount of energy consumption and pollution emissions has been relatively backward,and green development and high-quality economic growth mode have become the trend.Green total factor productivity has become an important indicator that can more accurately measure the quality of economic growth.As an essential driving force for high-quality economic growth,transportation infrastructure can effectively integrate regional resources,deepen regional cooperation and promote rational utilization of resources,thus improving productivity.The strategy of developing China’s transportation power points out that China’s transportation infrastructure should focus on the construction speed to the quality level,expand the radiation scope of the transportation network,improve the service level of transportation facilities and promote the spatial coordination between provincial transportation facilities and resources and environment.In the era of pursuing the efficiency of economic circulation,the crossregional connectivity of transport infrastructure makes its spatial spillover effect more prominent.Therefore,studying the spatial effect of transportation infrastructure on green total factor productivity is of great significance to grasp the quality of economic growth and the role of transportation infrastructure.Based on the characteristics of spatial network layout and externalities,this thesis explains the transportation infrastructure mechanism affecting total green factor productivity from three perspectives: resource allocation,technology spillover,and negative externalities.The growth trend and evolution law of green total factor productivity were analyzed by kernel density function,and a spatial distribution map revealed the development status and distribution of transportation infrastructure.From the perspective of spatial spillover,the spatial spillover effects of transportation infrastructure on green total factor productivity in China,eastern and western regions were compared with that of Dubin model.The results show that: firstly,the green total factor productivity is mainly promoted by advanced technology and is increasing year by year.The development difference between provinces gradually decreases,and the overall dispersion degree rises year by year.The spatial distribution of transportation infrastructure and green total factor productivity is lower in the west than in the east.Secondly,there are spatial spillovers and direct effects of transportation infrastructure at the national level.Highway density,railway density,and highway service level have positive spatial spillover effects on green total factor productivity in surrounding areas.In contrast,the railway service level has adverse direct and spatial spillover effects,and highway still plays a dominant role in transportation construction.Thirdly,there is apparent regional heterogeneity in road and railway facilities in the east,central and western regions,with the density of road and railway being the most obvious.The scale of road construction in the east has become increasingly saturated,and the railway scale in the central and western regions still needs to be further expanded.Based on the empirical conclusions,this thesis believes that in the process of transportation infrastructure construction,not only should we pay attention to scale expansion,but also pursue service quality.At the same time,we will coordinate the flow of talents and foreign investment between regions to achieve a win-win situation between economic growth and environmental protection.