宁波—舟山都市区结构的多维测度

Multi-dimensional Measurement of Land-island Metropolitan Area Structure

以中国典型的陆岛型都市区"宁波—舟山"为案例,采用城市规模指数、区位熵等模型测度甬舟都市区的规模、职能与网络结构特征.研究发现:(1)规模等级差异明显,首位城市的中心地位突出,宁波市区的龙头作用突现,镇海和北仑的次中心辐射作用初现,舟山区域影响力尚未显现.(2)都市区工业职能显著,主要城市以工业为主导职能,且工业部门存在同构趋势;生产性服务业发展相对滞后,散布于三江口、定海等,尚未形成空间分工与协作.(3)都市区以交通网络为载体形成了较好的经济网络,都市区点轴发展格局形成并趋向多层次的网络结构.

Metropolitan area（MA） has already become a basic region unit to improve regional comprehensive competitiveness. MA＇s scale, function and network structure not only are the general output of urban economy society and politics, but also deeply affect the improvement of urban competitiveness. Nowadays, coastal MA has already become a new stronghold of global economy. As enhancing the Zhejiang marine economy becomes a national strategy, Ningbo-Zhoushan（NZ） not only meets the development requirements for the core area of Zhejiang marine economy development, but also faces the problems such as the relocation of urban system, spatial reorganization and function improvement. Current situation can be illustrated by taking typical land-island MA ＂NZ＂ as a good case in point. The research results show that：（1） City hierarchical differences of NZ MA is significant, and the top city＇s central position is more enhanced.（2） The industrial functions of MA are outstanding, but the development of production-related services are comparatively lagging behind.（3） Transportation network structure of MA progresses well, and the cities with the transport network have formed a good economic networking.