基于空间杜宾模型的农业基础设施空间溢出效应

Agricultural Infrastructure, Spillover Effect and Agricultural Output

基于空间回归偏微分方法的空间杜宾模型,分别采用邻近空间、地理距离空间和经济空间作为权重矩阵,实证分析了中国农业基础设施存量对农业经济增长的空间溢出效应。结果表明:1在不同的空间权重条件下,中国农业经济增长均存在显著的空间依赖性;2农业基础设施存量对农业产出均存在正向的直接效应和溢出效应;3农业基础设施的空间溢出效应存在区域差异性,粮食主产区农业基础设施的空间溢出要强于粮食平衡区和粮食主销区,同时粮食主产区内部各区域的农业基础设施空间溢出效应也存在分化。

This paper takes adjacent space, geographical and economic space as weighting matrix to empirically analysis the spillover effects of China＇s agricultural infrastructure stocks to agricultural economic growth based on the Spatial Durbin Model. The results showed that there is a significant spatial dependence of Chinese agricultural economic growth at different spatial weight conditions; It presents positive direct and spillover effects of agricultural infrastructure stock; The spillover effects of agricultural infrastructure exists regional differences, major grain producing areas is stronger than food balance and food sales areas, at the same time, the internal districts of major grain producing areas are also very different.