长三角城市群绿色创新效率的时空格局和动态演进

Spatial-Temporal Characteristics and Dynamic Evolution of Green Innovation Efficiency in Yangtze River Delta Urban Agglomeration

绿色创新已成为区域实现高质量发展的重要驱动力。基于2008—2020年长江三角洲城市群26个城市的面板数据,采用超效率EBM模型测算长三角城市群绿色创新效率,分析其时空格局,并借助Kernel密度估计方法和马尔科夫链方法,解释长三角城市群绿色创新的动态演进。研究结果显示:(1)长三角城市群绿色创新效率整体呈现增长趋势,在地理空间上的“一极两核”绿色创新网络已基本形成。(2)长三角城市群绿色创新空间正相关性较为明显,但随着时间跨度的增加而减弱。(3)长三角城市群绿色创新发展趋势较为稳定,但随着时间跨度的延长,其流动性亦开始增强。鉴于此,本文提出要利用绿色技术进步推动产业结构升级,加强区域间绿色创新协同联动,同时要注重地区异质性。

Green Innovation has become an important driving force for regional high-quality development.Based on the panel data of 26 cities of Yangtze River Delta urban agglomeration from 2008 to 2020,this paper uses the super-efficiency EBM model to measure the green innovation efficiency of Yangtze River Delta urban agglomeration,and use the kernel estimation and Markov chain to analyzes the spatial-temporal patterns and the dynamic evolution.The results show that:(1)the green innovation in Yangtze River Delta urban agglomeration is increasing,the green innovation network geographically showing the“one pole,two cores”pattern.(2)the positive spatial correlation of green innovation in Yangtze River Delta urban agglomeration is obvious,but it weakens with the increase of time span.(3)the trend of green innovation in Yangtze River Delta urban agglomeration is relatively stable.However,the mobility of green innovation efficiency in cities has started to increase with the extension of time span.Therefore,this paper proposes to pay attention to the promotion of green technology to upgrade the industrial structure,to strengthen the coordination,but also to pay attention to regional heterogeneity.