长三角城市群创新联系网络时空演变分析

On the Spatiotemporal Evolution of the Innovation Linkage Network of the Urban Agglomeration in the Yangtze River Delta

本研究以长三角城市群27个城市为研究对象,运用时序全局主成分分析、引力模型、断裂点公式等方法,探讨长三角城市群创新能力、创新联系网络演变特征,以及创新中心城市辐射范围等问题。研究结果表明:长三角城市群的创新能力总体上呈现梯度扩散态势;长三角城市群创新联系总量呈现上升态势,其格局存在明显的“核心”区域与“边缘”区域;长三角城市群创新联系网络结构演变存在一定差异性,具体表现为各城市创新联系的边数呈现显著增加,东部城市与西部城市的联结边数也呈现显著增加;创新中心城市由2010年的2个城市增加到2020年的3个城市,且辐射范围明显扩大。

Taking the 27 cities of the Yangtze River Delta urban agglomeration from 2010 to 2019 as the objects,this paper discusses the innovation capability,the evolution features of innovation linkage network,the central innovative cities radiation range in the Yangtze River Delta urban agglomeration by using global principal component analysis,gravity model,fault-point formula etc.The results show that:(1)The innovation capability of the Yangtze River Delta urban agglomeration features gradient diffusion;(2)The total amount of innovation linkage in the agglomeration has shown an upward trend,and its pattern has obvious“core”and“peripheral”areas;(3)There are differences in the evolution of the innovation linkage network structure of the Yangtze River Delta urban agglomeration:the number of edges of innovation linkage in each city has increased significantly,and the number of linkage between eastern cities and western cities has also increased significantly;(4)The number of central innovative cities has increased from 2 in 2010 to 3 in 2019,and the radiation scope has been significantly expanded.