长江经济带全要素碳生产率的时空演化及提升潜力

将碳排放引入全要素生产率分析框架之中,利用Malmquist指数对长江经济带2000~2013年的全要素碳生产率进行测算。实证研究结果显示:(1)从时间维度来看,在此期间长江经济带碳生产率一直处于震荡上升的趋势,而全要素碳生产率处于较平稳的状态,年均增长率为2%;(2)从空间差异来看,长江经济带上中下游碳生产率区域差异明显,下游中游上游,全要素碳生产率下游区域高于中上游区域,而中游区域和上游区域则处于"追赶-超越-被反超"的状态;(3)上游区域全要素碳生产率增长的动力为技术效率的提高,中游区域全要素碳生产率平均下降了0.1%的原因为技术进步恶化的幅度已经完全抵消了技术效率提升带来的变化,下游区域主要是通过技术创新推动最优生产前沿向外移动使得全要素碳生产率平均增长了4.4个百分点;(4)安徽和贵州两地碳生产率提高的空间最大,而云南、四川和重庆地区也可通过技术进步、技术创新促进碳生产率的提高,上海、浙江、江苏和江西的碳生产率提升空间最小。

RESEARCH ON SPATIAL-TEMPORAL EVOLUTION OF TOTAL FACTOR PRODUCTIVITY CARBON AND POTENTIAL TO INCREASE CARBON PRODUCTIVITY IN THE YANGTZE RIVER ECONOMIC BELT

This article introduces the carbon into the framework of TFP analysis and uses Malmquist Index to measure and calculate the Total Factor Productivity Carbon (TFPC) in the Yangtze River economic belt from 2000 to 2013. The empirical results show:1.From the time dimension of view, during this period the carbon productivity of the Yangtze River economic belt has an upward trend in shock while the TFPC is relatively stable with the average annual growth rate of 2%; 2.From the perspective of spatial difference analysis, the carbon productivity is obvious different in the different regional of Yangtze River economic belt:downstream > midstream > upstream. Total factor productivity in the downstream is higher than that in the upstream region, while the midstream and upstream is in the condition that "catch-beyond-unsurpassed"; 3.In the upstream region, the power to improve the TFPC is the improvement of technical efficiency. In the midstream region, TFPC decreased by 0.1%, that is because changes brought about technical efficiency has been completely offset by the magnitude of the deterioration of technical progress. Through technological innovation the downstream region promoted the optimal production frontier moved outward, so that TFPC increasd 4.4 percentage points4.In Anhui and Guizhou, the carbon productivity have the room for improvement meanwhile, Yunnan, Sichuan and Chongqing can also promote the improvement of carbon productivity through technology progress and technology innovation. However, the room for improvement carbon productivity of Shanghai, Zhejiang, Jiangsu and Jiangxi is minimum.