长江经济带城市绿色技术创新效率及其动力机制研究

绿色技术创新兼具经济效益、社会效益与生态效益,对实现高质量发展具有重要推动作用.文章基于绿色技术创新的理论机理,采用超效率EBM模型从全国视角测度分析2017年长江经济带110个地级及以上城市绿色技术创新效率空间格局,进一步采用空间杜宾模型SDM探究长江经济带城市绿色技术创新效率的内在驱动机制.结果表明:长江经济带城市绿色技术创新效率领先于全国平均水平,但上中下游地区差异显著,呈右偏"V型"空间格局,下游地区城市绿色技术创新优势突出;经济发展、政府支持、产业结构高级化是直接提升长江经济带城市绿色技术创新能力的主导力量,发挥着绿色创新核心驱动作用;环境规制、外商投资、产业结构高级化、企业效益对长江经济带城市绿色技术创新效率具有较强的空间溢出效应,但城市间绿色创新要素竞争严重.进一步增强长江经济带城市绿色技术创新能力,应加快地区绿色创新协同发展进程,加大政府绿色创新支持力度,优化环境治理模式,推动产业结构绿色高级化,提升企业绿色技术创新积极性.

Research on the cities' green technology innovation efficiency and its dynamic mechanism in the Yangtze River Economic Belt

This paper measures and analyzes the spatial pattern of green technology innovation efficiency of 110 cities of the Yangtze River Economic Belt in 2017 by using the EBM model. This paper further explores the efficiency''s internal driving mechanism with the spatial Durbin model. The results show several findings. Firstly, the efficiency is ahead of the national average level, but there are significant differences between the upper, middle and lower reaches. Secondly, economic development, government support and industrial structure upgrading are the leading forces to directly enhance the green technology innovation capability of the cities. Thirdly, environmental regulation, foreign investment, advanced industrial organization and enterprise benefit have strong spatial spillover effect on the efficiency. To further enhance the green technology innovation capability of cities in the Yangtze River Economic Belt, it is necessary to accelerate the process of regional green innovation''s coordinated development, increase government support for green innovation, optimize environmental governance model, promote industrial structure''s greenization and upgradation, and enhance the initiative of enterprises'' green technology innovation.