国际R&D溢出对中国创新影响的两面性:基于空间Durbin模型的测度

The Two-Sidedness of R&D's International Spillover to Chinese Innovation:Measuring based on the Spatial Durbin Model

对国际R&D溢出效应的OLS检验忽视了知识溢出的无止境和空间局限性,以往空间建模的检验又错误定义了空间溢出效应。本文对空间溢出效应的参数定义予以修正,将其划分为直接效应、间接效应和总效应。以2008年300个市级行政区划为截面样本,基于空间Durbin模型的检验显示FDI和出口对中国创新成分表现出相反的空间溢出效应:FDI直接效应提升所在区域技术进步率,间接效应弱化毗邻区域技术效率;出口则相反;FDI空间溢出总效应没有促进创新,出口空间溢出总效应仅提升创新的效率成分。

The OLS ignores its spatial property when testing R＆D＇s international spillover, and the existing spatial econometric research makes a bias to its parameterization. This paper corrects the parameterization bias of spatial spillovers and divides it into three parts： direct effect, indirect effect and total effect. By using a cross-section sample of 300 Chinese Prefectural-Level cities in 2008 and based on Spatial Durbin Model, this paper proves that direct effect of FDI improved technology progress of locus but indirect effect weakened technology efficiency of neighboring, which contrary to direct and indirect effect of export. Total effect of FDI does not promote TFP. Total effect of export only promotes the efficiency element of TFP.