中国主要城市绿色全要素生产率增长差异及空间溢出——基于方向性距离函数的实证分析

Green TFP Growth Difference of China's Major Cities and Space Overflow:An Empirical Analysis Based on SBM Directional Distance Function

使用SBM方向性距离函数和Malmquist-Luenberger指数,测算并分解中国主要城市的绿色全要素生产率(绿色TFP),运用空间杜宾模型研究中国主要城市绿色TFP的空间溢出效应,认为前沿技术进步是绿色TFP增长的主要贡献因素,而环境技术效率的改善却比较滞后;城市绿色TFP显示出较大的地区差异,存在空间溢出;其中研发投入对绿色TFP的增长不仅具有空间溢出效应,也具有明显的本地促进效应。人力资本对于绿色TFP的增长并不表现出明显的空间溢出效应。

This paper uses SBM directional distance function and Malmquist - Luenberger index approach to measure green TFP of China＇s major cities, and analyzes the influence factor. We apply SDM to analyze the spillover of urban green TFP and its influencing factors. The major conclusions are as follows： Green TFP growth should be mainly attributed to the fron- tier technology progress, but the improvement of environmental technology efficiency is relatively lagging behind ; The urban TFP will be overestimated if the resources and environment factors are not taken into consideration, therefore more optimistic judgment is made on our country economic growth quality; Green TFP shows that there are large regional differences in China, but there＇s potential to overflow; R＆D not only has spatial spillover effects on green TFP growth, but also has local promotion effect. The spillover effect from human capital to Green TFP is insignificant.