产品密度、空间溢出效应与区域产业升级

Product Density, Spatial Spillover Effect and Regional Industrial Upgrading

基于产品空间理论,利用2002~2017年中国31个省市自治区94种产品的数据,通过设置SLX和SEM空间计量模型,从不同的区块、不同的时段和不同的空间邻近关系检验我国省际产品密度和区域产业升级的关系。结果发现:第一,当前我国省际产品密度对区域产业升级的作用既表现在区域内同时也表现在区域外,存在明显的本地效应和空间溢出效应;第二,从不同区块来看,当前东部地区产品密度对于产业升级的空间溢出效应非常明显,且地理邻近和经济邻近都非常显著,而中西部地区的空间溢出效应更多体现为地理邻近,经济邻近的空间效应不显著;第三,从时间维度来看,产品密度对于产业升级的本地效应相对减弱,地理邻近的空间效应有先增强后减弱的态势,而经济邻近的空间效应逐步增强。

Basing on product space theory,through the data of 94 products in 31 provinces and cities from 2002 to 2017 with the SLX and SEM spatial econometric models,this paper tests the relationship between product density and industrial upgrading in provinces and cities in China from different adjacency relations,different blocks and different periods. The results show that,firstly,the effect of product density on industrial upgrading is both inside and outside the region.The spillover effect and time-lag effect are significant.Secondly,from different blocks the spatial spillover effect of product density on industrial upgrading in the eastern is very obvious,and the geographical proximity and economic proximity are very significant.The spatial spillover effect in the central and western is more reflected in geographical proximity.The spatial effect of economic proximity is not significant.Finally,from the perspective of time the spatial spillover effect of product density on industrial upgrading is significantly enhanced,and the effect of economic adjacency relationship is gradually greater than that of geographical adjacency relationship.