长三角城市群创新联系的边界效应空间计量分析

A Spatial Econometric Analysis of the Boundary Effect of the Innovation Connection of the Urban Agglomeration in the Yangtze River Delta

摘要:

本文以2010-2019年长三角城市群为研究对象，基于创新能力空间相关性、创新联系边界效应的理论机制，将传统β收敛模型和Barro公式的边界效应模型拓展成空间计量模型，展开长三角城市群创新联系边界效应空间计量分析。研究结果表明：（1）长三角城市群创新能力存在显著的正空间相关性，且创新能力趋于收敛，创新联系趋于紧密，创新一体化态势明显。（2）长三角城市群创新联系的省际边界效应表现为显著的中介效应，而创新联系的核心-边缘边界效应则表现为显著的屏蔽效应，且屏蔽效应呈现减弱态势。（3）经济发展水平、科技经费投入和交通基础设施水平对城市创新联系发挥着正向作用，且能够提高省际中介效应的显著性，削弱核心-边缘城市边界的屏蔽效应。

Abstract:

This paper takes the Yangtze River Delta urban agglomeration from 2010 to 2019 as the research object, and expands the traditional β convergence model and the boundary effect model of the Barro formula into a spatial measurement model based on the theoretical mechanism of the spatial correlation of innovation capabilities and the boundary effect of innovation connection. Spatial econometric analysis of the boundary effect of urban agglomeration innovation connection is made in the Yangtze River Delta and the research results show that: (1) The innovation ability of the Yangtze River Delta urban agglomeration has a significant positive spatial correlation, and the innovation ability tends to converge, the innovation connection tends to be closer, and the trend of innovation integration is obvious. (2) The inter-provincial boundary effect of innovation links in the Yangtze River Delta urban agglomerations is manifested as a significant mediating effect, while the core-peripheral boundary effect of innovation links is manifested as a significant shielding effect, and the shielding effect is showing a weakening trend. (3) The level of economic development, investment in science and technology and the level of transportation infrastructure play a positive role in inter-city innovation links, and can increase the significance of inter-provincial intermediary effects and weaken the shielding effect of core-peripheral urban boundaries.