Research on the Radiation Mechanisms and Effects of Central Cities in Driving Collaborative Development of Urban Agglomerations:A Case Study of the Guangdong-Hong Kong-Macao Greater Bay Area
The central city serves as the primary spatial form for accommodating development factors and acts as a crucial engine for promoting regional coordinated development.This paper constructs a theoretical analysis framework of"radiation source—radiation channel—radiation hinterland"to reveal the radiation-driven mechanism of central cities from the perspectives of industrial chains,innovation chains,and urban chains.Utilizing the breakpoint model and field strength model,this paper analyzes the radiation characteristics of central cities within the Guangdong-Hong Kong-Macao Greater Bay Area urban agglomeration and proposes optimization strategies for collaborative construction.The study finds that central cities primarily drive the coordinated development of industries,innovations,and services in urban agglomerations through industrial chain division of labor and cooperation,technological spillovers in innovation chains,and functional alleviation mechanisms in urban networks.The spatial connections between central cities in the Guangdong-Hong Kong-Macao Greater Bay Area and other cities exhibit characteristics such as pole-driven dynamics and decreasing hierarchical layers.There are significant gradient differences in the radiation range from Guangzhou and Shenzhen.Hong Kong's radiation scope has contracted significantly while exhibiting regional imbalances in its radiative capacity.In response to these findings,this paper proposes strategies focusing on enhancing the energy levels of central cities,expanding radiation channels,and extending radiation hinterlands with an aim to provide references for relevant policy adjustments.
Central CityRadiation MechanismPoint-Line-SurfaceGuangdong-Hong Kong-Macao Greater Bay Area
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