The relationship between digital economy scale,green innovation efficiency and carbon emis-sion intensity is explored by constructing a multi-level evaluation system for the development of the dig-ital economy and utilizing the super-efficient SBM model,mediation effect and threshold effect based on the data of 30 provinces from 2008 to 2021.Testing results show that the development of digital econo-my significantly suppresses carbon emission intensity,while green innovation efficiency plays a pro-nouced mediating effect and threshold effect in it.And there is significant heterogeneity in the media-ting effect of green innovation efficiency across different regions,with a decreasing trend in the media-ting effect in the eastern,central and western regions,but the mediating effect in the northeastern region is not significant.It is noteworthy that with the increase of green innovation efficiency,the inhibition effect of digital economic development on carbon emission intensity is increasing,which indicates that green innovation efficiency plays a key role in the process of reducing carbon emission intensity by dig-ital economic development.
关键词
数字经济/绿色创新效率/碳排放强度/中介效应
Key words
digital economy/green innovation efficiency/carbon emission intensity/mediating effect
维普
万方数据