沿海经济带城市群中心度及经济联系测度分析

Analysis of City Cluster Centrality and Economic Linkage Measurement in Coastal Economic Zones

通过中心职能指数计算公式对沿海经济圈城市群进行城市等级划分,基于ArcGIS软件及引力模型测算沿海经济带城市群中心城市与周边城市的经济联系强度,研究发现在沿海经济城市群中,环渤海城市群、长三角城市群、珠三角城市群、海峡西岸城市群、环北部湾城市群的中心城市分别是北京和天津、上海、广州和深圳、福州和泉州、南宁。珠三角城市群中心城市经济联系紧密程度和联系强度均强于其他城市群;环渤海城市群北京与天津及唐山经济联系程度较高,与周边其余城市经济联系程度较低;长三角城市群上海与江苏南部地区的城市联系程度较高,对周边城市的总体联系强度值较均匀;海峡西岸城市群福州与莆田、厦门与泉州的经济联系强度最高,北部湾城市群经济联系程度最弱。

The urban agglomerations in the coastal economic circle are classified by the calculation formula of the central function index,and the economic connection strength between the central cities and the surrounding cities of the coastal economic belt urban agglomerations is calculated based on ArcGIS software and gravity model.The comparison found that among the coastal economic city clusters,Shanghai,the central city of the Yangtze River Delta city cluster,and Guangzhou and Shenzhen,the central city of the Pearl River Delta city cluster,have stronger economic ties and connection strength than the highest ties of other city clusters.As the central city of the Bohai Rim Economic Circle,Beijing has a relatively high degree of economic ties with the municipalities directly under the Central Government of Tianjin and Tangshan City in Hebei,but has a relatively low degree of economic ties with other surrounding cities.Within the Yangtze River Delta urban agglomeration,Shanghai has a high degree of connection with southern Jiangsu,and the overall connection to the surrounding cities is relatively uniform.Within the West Bank of the Strait urban agglomeration,the economic ties between Fuzhou and Putian,Xiamen and Quanzhou are the highest;whereas,the economic ties within Northern Gulf urban agglomeration are the weakest.