中原经济区城市的吸附能力与联系强度测度——基于铁路客运车次数据

The measurement of the adsorption capacity and therelationship strength of the cities in the Central PlainsEconomic Zone——Based on the data of railway passenger train

本文利用铁路客运车次数据测度中原经济区内各城市的吸附能力与城市间的联系强度,识别城市吸附能力的空间分异特征,刻画中原经济区城市空间联系格局。结果表明,中原经济区内城市的吸附能力总体偏弱,吸附能力相对较强的城市沿京广线和陇海线成"十"字型集聚,城市间联系表现出以郑州为重心的"三角形"格局,但郑州在省际联系中的中心作用较小,中原经济区内省际联系总体不足。

Based on the central plains economic zone as the study area, this paper used the data of railway passenger trains to estimate each city's adsorption capacity,to measure the adsorption indexes and the strength of the relationship via cities, to identify the space differentiation characteristics of cities' adsorption capacity, and to describe the urban linkage pattern of the central plains economic zone.Results show that in the overall area of central plains economic zone,the city's adsorption capacity is weak, the cities which have strong adsorption capacityare along the Beijing-Guangzhou railway and the Long- Hai railway, showing a cross shaped agglomeration distribution characteristics. Connection via cities presents a triangle pattern with Zhengzhou as the center of gravity. Zhengzhou as thecoreofcentral plains economic zone, its center position in space connection is prominent, but its central role in provincial links is small, the central plains economic zone lacks provincial links.