外商直接投资对城乡收入差距的影响研究——空间溢出及门槛特征

The Study on Space Spillover and Threshold of the Impact of FDI on Rural-Urban Income Gap

本文以我国30个省市2003~2014年的面板数据构建空间滞后模型和门槛面板模型,以人均国内生产总值和外商直接投资(FDI)强度为门槛变量,实证检验FDI与城乡收入差距间的非线性空间关系。结果表明FDI与城乡收入差距具有显著的空间积聚特征,同时FDI对缩小城乡收入差距的效应显著,且在各地区间存在明显差异。此外,FDI与城乡收入差距间具有门槛特征。当人均国内生产总值和FDI强度跨过门槛值时,FDI对于缩小城乡收入差距的效应会呈现出下降趋势。

Based on the panel data of 30 provinces and cities from 2003 to 2014,this paper builds a spatial lag model and a panel threshold model using per capita GDP and the intensity of FDI as the threshold variables to examine the nonlinear spatial relation between FDI and rural-urban income gap.This result suggests that FDI and rural-urban income gap are with evident space accumulation characteristics.In addition,FDI has a positive impact on rural-urban income gap while this effect varies among regions.There is also a threshold effect between FDI and rural-urban income gap.When intensity of FDI and per capita GDP exceed the threshold value,FDI will have a smaller impact on rural-urban income gap.