扬子江城市群绿色全要素生产率的测度及分解研究

Research on Measurement and Decomposition of Green Total Factor Productivity of Yangtze River Urban Agglomeration

基于扬子江城市群8市2010年至2019年的面板数据,运用GML指数模型和SBM超效率模型,对扬子江城市群的绿色全要素生产率进行测算,并在此基础上检验了政府财政支出与绿色全要素生产率增长的门槛效应。结果表明:政府财政支出与绿色全要素生产率的增长存在门槛效应,政府财政支出对绿色全要素生产率的增长起推动作用,但随着政府财政支出比例的增加这种正向推动力逐渐减弱。

Based on the panel data of 8 cities in the Yangtze River urban agglomeration from 2010 to 2019,the GML index model and the SBM super-efficiency model are used to measure the green total factor productivity of the Yangtze River urban agglomeration.Based on this,the government fiscal expenditure and green total are tested.The results show that there is a threshold effect between government fiscal expenditure and the growth of green total factor productivity.Government fiscal expenditure promotes the growth of green total factor productivity,but this positive driving force gradually weakens as the proportion of government fiscal expenditure increases.