摘要
基于2011-2018年中国城市面板数据,构建不同的空间权重矩阵,采用空间杜宾模型考察数字经济发展对城市创新质量的影响,并利用面板门槛模型探究市场化程度调节机制的作用区间。研究结果表明:(1)我国各城市的数字经济发展和创新质量分布呈现显著的正向空间相关性特征,并且这种空间相关性在经济空间关联特征上更为明显;(2)不同权重矩阵对比分析,结果显示,数字经济的发展对本地区创新质量的影响效应显著为正,但在地理距离权重矩阵下对邻近地区的空间溢出效应为负,在经济距离权重矩阵以及地理与经济距离嵌套权重矩阵设定下的溢出效应为正;(3)数字经济发展对创新质量存在明显的市场化双门槛效应,高市场化水平区间内数字经济的发展对创新质量的提升效应更为显著。本研究进一步拓展了创新质量提升的途径并加深了对数字经济发展赋能区域高质量创新的空间溢出效应和异质性的理解。
Based on the chinese city-level panel data from 2011 to 2018,this paper constructs different spatial weight matrices,uses the Spatial Durbin Model to investigate the impact of digital economy development on the quality of urban innovation,and uses panel threshold model to explore the range of market-oriented degree adjustment mechanism.The results show that:(1)The digital economy development and innovation quality distribution of Chinese cities show significant positive spatial correlation characteristics,and this spatial correlation is more obvious in economic spatial correlation characteristics;(2)The comparative analysis results of different weight matrices show that the development of the digital economy has a significant positive effect on the innovation quality of the region,but the spillover effect on the surrounding areas under the geographical weight matrix is negative.And the spatial spillover effect is positive under the setting of the economic distance weight matrix and the nested weight matrix of geographical and economic distance;(3)The development of the digital economy has an obvious double-threshold effect of marketization on the innovation quality,and the development of the digital economy in the range of high marketization levels has a more significant effect on the improvement of innovation quality.The paper further expands the ways to improve the quality of innovation and deepens the understanding of the spatial spillover effects and heterogeneity of regional high-quality innovation empowered by the development of the digital economy.
作者
梁琦
肖素萍
李梦欣
LIANG Qi;XIAO Su-ping;LI Meng-xin(School of Business,Sun Yat-Sen Univesity,510006)
出处
《上海经济研究》
CSSCI
北大核心
2021年第9期44-56,共13页
Shanghai Journal of Economics
基金
国家社会科学基金重大项目“虚拟集聚的理论及其应用研究”(18ZDA066)的阶段性成果之一。
关键词
数字经济发展
创新质量
市场化水平
空间溢出效应
门槛效应
Digital Economy Development
Innovation Quality
Marketization Level
Spatial Spillover Effect
Threshold Effect
