中国数字经济与绿色创新的耦合协调评价——兼论区域发展重大战略

Coupling Coordination Between Digital Economy and Green Innovation in China:Major Regional Development Strategy

本文基于2013—2021年中国30个省(区、市)的数字经济与绿色创新的耦合协调评价,考虑区域发展重大战略,借助泰尔指数和空间自相关等模型方法对其时空演化特征及差异成因进行分析。研究发现:中国数字经济与绿色创新实现较快增长,在空间上呈现出从沿海沿江省份推向全国的动态过程,五个区域间发展差异明显并已形成三个发展阶梯;耦合协调发展基本面向好,由严重失衡改善为轻度失衡,但长期存在发展极化现象,粤港澳大湾区断层式领先其他四区;耦合协调发展的整体差异有所改善,区域内差异是整体差异的主要来源,其中黄河流域生态保护和高质量发展战略区的省际差异最大,长江经济带对整体差异的贡献率最高;耦合协调发展存在显著的正向空间自相关性,但自相关性强度有所减弱,长江经济带下游出现显著的高值聚集区,黄河流域中上游形成显著的低值聚集区。

Based on the coupling coordination between digital economy and green innovation in China's 30 provinces(municipalities and autonomous regions)from 2013 to 2021,and considering the major regional development strategy,this paper demonstrates and analyses the causes of the characteristics of spatio-temporal evolution and its differences by using the models such as Theil index and Moran's index.The paper firstly shows that digital economy and green innovation had a steady growth in China.Spatially,they were both developed in provinces along the Yangtze River and the sea at first and then promoted nationwide.Notably,regional disparities in the digital economy and green innovation led to three distinct levels of development among five regions.Then the paper finds that the overall coupling coordination was improved from severe imbalance to mild imbalance.However,there was a long-term polarization in the digital economy and green innovation of China,where the Guangdong-Hong Kong-Macao Greater Bay Area remained far ahead of other four regions.Subsequently,the overall difference in coupling coordination,which mainly resulted from the differences within region,was narrowed.The largest differences within region existed in the region of ecological conservation and high-quality development of the Yellow River basin,and the Yangtze River Economic Belt contributed most to the China's overall difference.The paper finally shows that the coupling coordination had significant and positive spatial autocorrelation,which had a decreasing trend.The gathering of provinces with high-value coupling coordination were proved significantly in the lower reaches of the Yangtze River Economic Belt,while significant low-value clustering appeared in the middle and upper reaches of the Yellow River Basin.