高铁运营与经济协调会合作机制是否打破了城市群市场分割——来自长三角城市群的经验证据

具有时空压缩效应的高铁运营是否促进了城市群内的市场一体化？城市群经济协调会合作机制又是否打破了城市群内的市场分割？目前尚缺乏经验证据。本文利用2003—2015年长三角城市群34个地级市数据，采用空间面板杜宾模型（SDM）实证分析了高铁运营与经济协调会合作机制对于打破城市群内市场分割的影响。研究结果表明：（1）长三角城市群内地市间“以邻为壑”的现象依旧存在，但高铁的运营与经济协调会显著降低了该地区市场分割水平。（2）高铁运营产生的时空压缩效应，使得城市群内市场一体化的影响范围不断扩大，并将边界延伸至2小时交通圈。（3）高铁运营对于其他城市市场分割的影响效果均大于对本地区市场分割的影响，而城市群内的经济协调会合作机制仅在相邻地市间发挥作用，对于非邻近地区的空间溢出效应相对有限。

DO HIGH SPEED RAIL OPERATION AND ECONOMIC COORDINATION COMMITTEE BREAK THE MARKET SEGMENTATION IN URBAN AGGLOMERATIONS——Evidence from the Yangtze River Delta Urban Agglomeration

Are the space time compression effect caused by the operation of high speed rail and the economic coordination committee in the urban agglomeration conducive to the market integration? There is no empirical evidence currently. Based on the data of 34 prefecture level cities in the Yangtze River Delta urban agglomeration from 2003 to 2015, this paper empirically analyzes the impact of high speed rail operation and economic coordination committee of urban agglomeration on breaking down regional market segmentation by using Spatial Panel Dubin Model (SDM). The results show as follows: (1) The phenomenon of “beggar thy neighbor” does exist between the cities in the urban agglomeration of the Yangtze River Delta, but the high-speed rail operation and the economic coordination committee of the urban agglomeration significantly reduce the level of market segmentation in this region. (2) The space time compression effect caused by the operation of high speed rail leads to market integration of urban agglomerations and its effect coverage extends from neighboring cities to a 2 hour traffic circle. (3) The impact of HSR operations on market segmentation in other cities is greater than its impact on its own cities. However, economic coordination committee within urban agglomerations only affects neighboring cities and its spatial spillover effects on other areas are relatively limited.