贸易自由化、产业规模与地区工资差距

本文在新经济地理学框架下构建了非对称的三地区空间模型研究贸易自由化、产业规模与地区工资差距的关系。研究结果表明:贸易自由化可能扩大或缩小地区间收入差距,这主要取决于地区相对产业份额以及本地与国外市场接近程度。当本地接近于国外市场并且产业份额相对较小时,贸易自由化与区域间收入差距呈倒"U"型关系;否则,贸易自由化扩大区域间的收入差距。使用1992～2008年中国27个省份面板数据证实了该假说,这也解释了Egger et al.(2005)与Redding和Sturm(2008)研究结论迥异的原因。此外,贸易自由化有利于各区域工资水平的提高,对产业份额较小地区尤为明显。

Trade Liberalization,Industry Scale and Regional Wage Gap

This paper considers an asymmetric three-regions spatial model in the set of New Economic Geography(NEG),by which it can research the relationship about trade liberalization,industry scale and regional wage gap.It finds that whether the free trade will promote or impede regional income gap depend on regional industry share and foreign market accessing.If the regional foreign market accessing is better and the industry share is smaller,the relationship between free trade and regional income gap will be an inverted "U" curve in shape.Otherwise,the free trade will enlarge regional income gap.By using the 27 provinces panel data of China from 1992～2008,this hypothesis is confirmed and it also explaines why Egger et al.(2005) has different result with Redding and Sturm(2008).Besides,the paper also finds that the free trade will improve all regional incomes,especially to thoses regions which has smaller shares of industry.