基于城市面板数据的绿色生态效率测度与影响因素分析

Measurement and influencing factors of green eco-efficiency based on urban panel data

对山东省所有城市2015—2021年绿色生态效率测度与影响因素进行分析,采用DEA-Malmquist模型进行动态评价,确定山东省绿色生态效率标准差与变异系数波动下降,城市绿色生态效率的绝对差异与相对差异逐渐缩小。山东省绿色发展典型特征具有稳健性,绿色生态效率体现为局部收敛。技术进步是城市绿色生态效率持续提升过程中的主驱动力,在经济发展水平最高地区,可体现出最高绿色生态效率动态成长性。面板估计模型能准确界定出城市规模与绿色生态效率Malmquist指数关系为“U”型曲线关系;第二产业和第三产业比重、私营和个体经济比重、地区生产总值增长率、职工工资水平与Malmquist指数间的关系为显著正相关;政府科学技术支出水平、金融发展程度区域虚拟变量与Malmquist指数间相关性较低。

The measurement and influencing factors of green eco-efficiency in all cities in Shandong Province from 2015 to 2021 were analyzed,and the DEA-Malmquist model was used for dynamic evaluation,and it was determined that the standard deviation and coefficient of variation of green eco-efficiency in Shandong Province decreased,and the absolute and relative differences of urban green eco-efficiency gradually narrowed.The typical characteristics of green development in Shandong Province were robust,and green ecological efficiency was reflected in partial convergence.Technological progress was the main driving force in the continuous improvement of urban green ecological efficiency,and the dynamic growth of the highest green ecological efficiency could be reflected in the regions with the highest level of economic development.The panel estimation model could accurately define the relationship between city scale and green eco-efficiency Malmquist index as a U-shaped curve.The proportion of secondary industry and tertiary industry,the proportion of private and individual economy,the growth rate of regional GDP,the wage level of employees and Malmquist index are significantly positively correlated.The correlation between Malmquist index and the level of government expenditure on science and technology and the degree of financial development was low.