空间交易成本对创新网络空间拓扑的影响研究——以京津冀医药产业为例

Research on the Influence of Spatial Transaction Cost on Spatial Topology of Innovative Network——Taking Beijing-Tianjin-Hebei Pharmaceutical Industry as an Example

运用时序全局主成分法测度2008~2017年京津冀空间交易成本及其动态变化,构建QAP计量模型分析空间交易成本与创新网络空间拓扑的关系。研究发现:(1)京津冀地区空间交易成本近年显著下降,其中京津两市与其他城市之间的空间交易成本为最低,保定市位列第三,河北南部城市的空间交易成本相对较高;(2)空间交易成本显著影响创新网络在地理空间上的拓扑,能够在一定程度上解释这一动态过程;(3)滚动检验显示,空间交易成本降低对于区域之间创新合作促进具有"U"型效果;(4)分类检验来看,外生性空间交易成本对网络空间拓扑的影响不断减弱,而内生性空间交易成本对网络空间拓扑的影响不断加强。

This paper uses time series global principal component method to measure the spatial transaction cost and dynamic changes of Beijing-Tianjin-Hebei from 2008 to 2017, constructs QAP regression model to analyze the relationship between spatial transaction cost and innovation network spatial topology. The research finds that:(1) the cost of spatial transaction in Beijing, Tianjin and Hebei has decreased significantly in recent years, Beijing is the lowest, Tianjin is the second, and Baoding ranks the third, while the cost of spatial transaction in southern Hebei is relatively high;(2)the cost of spatial transaction significantly affects the topology of innovation network in geo-space, which can explain this process;(3)rolling test shows that the reduction of transaction cost has a U-shaped effect on the promotion of innovation and cooperation among regions;(4) classification test shows that the impact of exogenous transaction cost on network spatial topology is weakening, while the impact of endogenous transaction cost on network spatial topology is increasing.