国家级城市群发展阶段、空间扩张特征及动力机制  

Development Stage,Spatial Expansion and Dynamic Mechanism of National Urban Agglomeration

作　　者：严亚磊 于涛[2] 陈浩[2] YAN Yalei;YU Tao;CHEN Hao(Urban Planning Institute of Jiangsu Provincial Planning and Design Group, Nanjing 210008, China;School of Architecture and Urban Planning, Nanjing University, Nanjing 210008, China)

机构地区：[1]江苏省规划设计集团城规院,南京210008 [2]南京大学建筑与城市规划学院,南京210008

出　　处：《地域研究与开发》2021年第5期51-57,共7页Areal Research and Development

基　　金：国家自然科学基金项目(51878330)。

摘　　要：基于夜间灯光数据,采用阈值法、位序规模法则、地理探测器等方法研究2002—2017年中国国家级城市群的发展阶段、空间扩张特征及动力机制。结果表明:国家级城市群发展阶段分为由初级到高级的趋向集聚、集聚加速、集聚衰减、趋向分散4个阶段,趋向集聚和集聚加速阶段的城市群空间扩张多为中心城市引领,全域夜间灯光均值增速较快,处于开发建设热潮;集聚衰减和趋向分散阶段的城市群空间扩张多为外围城市引领,全域夜间灯光均值较高,土地整体开发强度较高。不同阶段城市群空间扩张的动力机制有所异同,资源供给、固定资产投资均是4个阶段的主要动力,区位条件和人口增长是趋向集聚阶段的主要动力,经济增长、外商直接投资、工业发展是集聚加速和集聚衰减阶段的主要动力,文教水平是趋向分散阶段的主要动力。Based on nighttime lighting data,the study investigated the development stages,spatial expansion characteristics and dynamic mechanisms of national-level urban agglomerations in China between 2002 and 2017 using the threshold method,the rule of bit-order scale,and the geographic probe.The study showed that the development stages of national-level urban agglomerations were divided into four stages,from primary to advanced convergence,acceleration of agglomeration,decay of agglomeration,and decentralization.The spatial expansion of urban agglomerations in the stage of agglomeration and agglomeration acceleration was mostly led by the central cities,and the average value of nighttime lights in the whole area increased faster and maintains the development and construction boom.The spatial expansion of urban agglomerations in the stage of declining agglomeration and tending to disperse was mostly led by peripheral cities,with a higher average value of nighttime lights in the whole area and a higher overall land development intensity.The dynamic mechanisms of spatial expansion of urban agglomerations in different stages were different.Resource supply and fixed asset investment were the main driving forces in all four stages.In addition,location conditions and population growth were the main driving forces in the stage of convergence,economic growth,foreign direct investment,and industrial development were the main driving forces in the stage of agglomeration acceleration and agglomeration decay,and cultural and educational level was the continuous driving force in the stage of convergence dispersion.

关 键 词：国家级城市群 发展阶段 空间扩张 动力机制 夜间灯光数据 

分 类 号：TU982[建筑科学—城市规划与设计]