依据空间关系界定距离衰减系数,构建修正引力模型,以武汉城市群为例,验证了该修正模型在测度空间相互作用方面的合理性。结果表明:修正引力模型能较准确地测定城市空间的相互作用;在武汉城市群中,武汉市对外辐射网络正逐渐形成并不断强化,其他城市尚处弱势,“一城独大”态势愈加显著。据此,认为武汉城市群需要加强副中心城市建设、完善产业合作机制,才能实现健康均衡发展。
To quantitatively measure intercity spatial interaction of urban agglomeration, a Modified Gravity Model is proposed to check with the case study of Wuhan Urban Agglomeration the reasonability of its role in measuring spatial intercity. The results show that the Modified Gravity Model can reflect the spatial contact among cities and measure intercity spatial interaction more effectively. The network structure centered Wuhan appears and enhances constantly, but for other cities they keep weak. Consequently, the state "only one strong" becomes more significantly in Wuhan Urban Agglomeration. Accordingly, it' s necessary to strengthen vice - central city construction and improve industrial cooperation mechanism for the healthy development of Wuhan Urban Agglomeration.