中国城市数字经济与绿色技术创新耦合协调测度与评价

Coupling coordination measurement and evaluation of urban digital economy and green technology innovation in China

选取中国271个地级及以上城市为样本,构建了数字经济与绿色技术创新评价体系,基于耦合协调度模型测度了数字经济与绿色技术创新的耦合协调度并分析其地区差异和空间效应。研究发现:2013-2018年中国城市数字经济与绿色技术创新耦合协调度呈上升趋势,但耦合协调度绝对值仅处于中度耦合类型,耦合协调度显现出显著的区域与城市差异性;Dagum基尼系数显示数字经济与绿色技术创新耦合协调度的地区差异在观察期内呈下降趋势,七大区域耦合协调度的地区差异主要来源于超变密度,不同类型城市耦合协调度的地区差异主要来源于组间差异;Moran指数显示数字经济与绿色技术创新耦合协调度存在显著的空间效应,且此种空间效应存在显著的区域差异。最后,基于研究结论提出相应的政策建议。

An evaluation system of digital economy and green technology innovation was constructed based on 271 cities at prefecture-level and above in China. The coupling coordination degree model was used to measure the coupling coordination degree of digital economy and green technology innovation, and the regional differences and spatial effects were analyzed. The results show that the coupling coordination degree of urban digital economy and green technology innovation in China shows an upward trend from 2013 to 2018, but the absolute value of coupling coordination degree is only in the moderate coupling type, and the coupling coordination degree shows significant regional and urban differences. The Dagum Gini coefficient shows that the regional differences of coupling coordination degree between digital economy and green technology innovation show a downward trend during the observation period. The regional differences of coupling coordination degree of seven regions mainly come from the super-variable density, and the regional differences of coupling coordination degree of different types of cities mainly come from the inter-group differences. Moran index shows that the coupling coordination degree of digital economy and green technology innovation has significant spatial effect, and this spatial effect has significant regional differences. Finally, corresponding policy suggestions are put forward based on the research conclusions of this paper.