辽中南城市群空间联系测度

Calculation of spatial contact of Liaozhongnan Urban Agglomeration

基于城市流强度模型和引力模型,以辽中南城市群10个地级市为研究对象,从产业和区域角度分析了辽中南城市群内各城市的对外辐射能力和内在空间的相互作用关系。结果显示:辽中南城市群整体集聚和辐射能力较弱,城市流强度普遍偏低;辽中南城市群内第二、三产业辐射能力存在较大差异,第二产业辐射能力较强,第三产业辐射能力较弱;辽中南城市群各城市空间相互作用水平较低,且空间联系程度分布不均衡;辽中南城市群各城市间的空间相互作用强度存在较大差异,其中沈阳与城市群内其他城市间的空间相互作用强度普遍较高;但大连与大多数城市的空间相互作用强度较弱且随距离增加而减小,其他城市之间,除鞍山与辽阳之间的相互作用较大之外,强度均处于较低水平。

Based on the Urban Flow Model and the Gravity Model,this essay measures and analyzes the radiation and inherent space interaction relations of 10 prefecture-level cities from industrial and regional perspective in Liaozhongnan Urban Agglomeration. The results show that: Firstly,the total concentration and radiation in Liaozhongnan Urban Agglomeration is weak,the intensity of urban flow is generally low,and the radiation range and intensity of the central city and large city need to be strengthened; Secondly,the difference is big in the radiation between secondary industry and tertiary industry,the radiation of secondary industry in cities is strong while the radiation of tertiary industry is weak,whose spatial distribution is scattered; Thirdly,There are great differences in spatial interaction intensity among cities,and the spatial interaction intensity of Shenyang and other cities in urban agglomeration is generally higher; But the spatial interaction between Dalian and most cities is weak and decreases with the increase of distance; Among other cities,apart from the greater role of Anshan and Liaoyang,the intensity is at a lower level.