促进、加速与溢出：数字经济发展对区域创新绩效的影响

在系统揭示数字经济对区域创新绩效的促进作用、边际递增的非线性影响和空间溢出机制的基础上，基于2013—2018年我国省级面板数据，构建区域数字经济发展评价指标体系，运用面板固定效应模型、门槛回归和空间杜宾回归分析方法，实证检验数字经济对区域创新绩效的影响。研究结果表明：数字经济发展显著促进区域创新绩效提升；数字经济发展对区域创新绩效、发明创新绩效均有边际效应递增的非线性影响；数字经济发展对邻近地区的创新绩效和非发明创新绩效有显著负向影响，但对发明创新绩效影响不显著。据此，提出相应政策建议。

Promotion,Acceleration and Spillover: the Impact of Digital Economy Development on Regional Innovation Performance

Digital economy is an extension of the development of information economy and Internet economy.Digital infrastructure based on information and communication technology (ICT), digital technology services, and the economic activity output generated by digital technology constitute the core content of digital economy.Digital economy with digital technology as the core has profoundly changed the process and results of innovation and had an important impact on regional innovation performance.This paper systematically reveals the promoting effect, the nonlinear impact of marginal increase and the spatial spillover mechanism of digital economy on regional innovation performance.Firstly, on the aspect of the promotion effect of digital economy development on regional innovation performance, digital economy continuously improves the level of regional innovation by driving enterprise innovation, industrial innovation and regional innovation ecosystem.The specific manifestations are as follows: First, the development of digital economy has reshaped the competitive form of enterprises, promoting enterprises to change their organizational management and business model, and form an innovation-oriented management model.At the same time, the development of digital economy also provides favorable technical support for enterprise innovation activities, so as to promote the evolution of enterprises and the improvement of innovation performance in the region.Second, with the deepening integration of digital industry and traditional industry, digital knowledge and data have become key production factors, and the proportion of technology and knowledge in the combination of production factors continues to increase, so the innovation effect is being more and more significant.Third, the development of digital economy has promoted the construction of regional digital infrastructure and the improvement on innovation environment, which is conducive to accelerating the agglomeration of regional innovation resources, promoting innovation cooperation and knowledge spillover among enterprises, and improving the level of regional innovation.Secondly, digital economy has the characteristics of network externality and a high degree of industrial relevance, and has a non-linear impact of increasing marginal effect on regional innovation performance.On the one hand, the development of digital economy can increase the marginal income of innovative products, enhance the inclusiveness of innovation, and form a marginal increase in regional innovation performance.On the other hand, digital technology has high permeability and industrial relevance.The development of digital economy will trigger a series of chain innovations and form a nonlinear growth of regional innovation output.Therefore, when the development of digital economy exceeds a specific critical level, it will have an increasing marginal effect on regional innovation performance.Finally, the transformation of platform innovation mode, resource matching mechanism and government governance mode under the digital economy, will enable digital innovation activities to improve resource mismatches, promote the agglomeration of innovation elements, and form the spatial spillover of regional innovation activities.In terms of empirical research, this paper constructs the regional digital economy index by three dimensions, which are the regional information development, the internet development and the digital transaction level.Based on China's provincial panel data from 2013 to 2018, this paper uses panel fixed effect model, threshold regression and spatial Durbin regression analysis methods, this paper empirically tests the impact of digital economy on regional innovation performance.The results show that the development of digital economy significantly promotes the improvement of regional innovation performance.The development of digital economy has a non-linear effect of increasing marginal effect on regional innovation performance and invention innovation performance; The development of digital economy has a spatial spillover effect on regional innovation performance.Specifically, it has a significant negative impact on innovation performance and non-invention innovation performance in adjacent areas, but has no significant impact on invention innovation performance.Based on this conclusion, this paper puts forward policy recommendations for accelerating China's regional innovation development under the digital economy.The first is to accelerate the development of the digital economy and promote the digital transformation of the economy and society, the second is to create a good digital development environment to promote regional innovation and entrepreneurship; the third is to improve the supervision of the development of the digital economy and build an orderly competitive, open and inclusive innovation pattern.