运输成本、规模效应与区域经济差距——以辽宁省为例

Transportation Cost, Scale Effect and Regional Economic Disparity: Taking Liaoning as an Example

基于新经济地理学理论,使用辽宁省地级市层面数据,通过对市场潜力模型和Krugman工资方程进行估计,分析运输成本对辽宁区域工资差距的影响并计算出规模效应.结果显示,辽宁省总体经济呈现出一定程度的规模报酬递增,除了中心城市沈阳和大连以外,省内非中心城市之间的运输成本对经济发展水平和规模效应起制约作用,沈阳和大连则通过相对发达的交通运输系统对省内非中心城市的经济起辐射带动作用.因此,改善辽宁省地级市之间的交通运输条件是缩小辽宁省区域经济发展水平差距的合适政策选择.

Based on the new economic geography theory,a market potential model and a Krugman wage equation were estimated with the data of the prefecture cities in Liaoning Province,and how transportation costs affect the regional salary disparities in Liaoning was analyzed and then the scale effect was calculated. The results showed that the overall economy in Liaoning takes on a certain increase of scale payment,and that the transportation costs between any other two cities in Liaoning apart from Shenyang and Dalian have negative effects on regional economic levels and scales,but through their more developed transportation systems,Shenyang and Dalian have radiative effects on Liaoning＇s economy. Therefore,policies aiming at improving the transportation systems are suggested to reduce the regional economic disparities in Liaoning Province.