晋中城市群县域可达性及经济联系格局研究

Research on Accessibility and Economic Linkages of Counties in Jinzhong Urban Agglomeration

以晋中城市群为研究对象,运用加权平均旅行时间和引力模型分析了2000—2018年晋中城市群县域单元可达性水平及经济联系的时空演变格局。结果表明:(1)晋中城市群县域单元的可达性水平显著提升但地域分布不均衡,受地形和距离因素的影响存在"断崖式"梯度变化和"中心高、边缘低"的圈层式空间分布特征。(2)晋中城市群县域单元的经济联系强度持续增强,其空间分布格局具有显著的廊道指向特征和行政区指向特征。(3)晋中城市群核心区域的辐射带动作用显著,不同县域单元对外经济联系能力差异较大,但城市群内部的发展差距在逐渐缩小。

Taking Jinzhong Urban Agglomeration as the research object,using weighted average travel time and gravity model,this study analyzed the spatial-temporal evolution pattern of accessibility and economic linkages of counties in Jinzhong Urban Agglomeration during 2000-2018.The results showed that:(1)The accessibility of counties in Jinzhong Urban Agglomeration had been significantly improved,but the geographical distribution was uneven.Meanwhile,there were"cliff-style"gradient changes and spatial distribution features of"high center and low edge"affected by topography and distance.(2)The intensity of economic linkages between counties in Jinzhong Urban Agglomeration continued to increase,and its spatial distribution pattern had significant corridor and administrative region orientation features.(3)The core area in Jinzhong Urban Agglomeration had a significant radiating and leading role.Different counties had great differences in the ability of foreign economic linkages,but the development gaps within Jinzhong Urban Agglomeration were gradually narrowing.