摘要
城市多中心是现代城市发展的重要趋势,精准识别城市中心和理解城市中心形成机制对推进以人为核心的新型城镇化具有十分重要的意义。基于VIIRS夜间灯光数据设计出城市中心识别方法,对全国286个地级以上城市的城市中心进行识别,从城市中心数和中心发展的均衡度两个方面对城市中心的分异特征及影响因素进行分析。结果表明:(1)在全国286个城市中识别出181个多中心城市,所识别的城市中心与城市规划中心具有很大程度一致性,识别结果具有一定的可靠性。(2)城市中心数表现为"东多西少"的空间格局,并随城市规模等级的增加呈现"S"型递增趋势。(3)城市中心发展的均衡度呈现"东高西低"的空间格局,并随城市规模等级的增加呈现稳定递增,到特大型城市基本保持稳定。(4)河流对市区的分割、市区是否临海以及市区平地占比等自然地理因素对城市中心发展具有影响,但是社会经济因素影响更大;社会经济因素中,轨道交通站点数、市辖区人口数、城市规模等级、地区生产总值、第三产业占地区生产总值比例、固定资产投资对城市中心发展具有显著影响。
A polycentric city is an important trend in the development of modern cities.Identifying accurate urban centers and understanding formation mechanism of urban center are of great significance to promoting the new urbanization with the people-oriented idea. Based on the VIIRS night lighting data, the paper designs the identification method of the urban center, identifies the urban center of 286 prefecture-level cities, and analyzes the differentiation characteristics and influencing factors of the urban center from the number and the centrality index. The results show that:(1) The 181 polycentric cities have been identified in 286 cities throughout the country, the identified urban center is in great agreement with the urban planning center, and the results have a certain reliability.(2) The urban center number presents the spatial pattern of more in the east and less in the west, and presents the "S" type increasing trend with the increase of the city scale.(3) The equilibrium index shows the spatial pattern of high in the east and low in the west, suggesting a steady increase with the increase of the scale of the city and remain stable until a megalopolis forms.(4) Natural geographical factors such as the segmentation of the rivers, the adjacency of the sea and the proportion of the flat land have influence on the development of the city center, but the social and economic factors has more impact on this process. Social and economic factors, the number of rail transit station, city population, city scale, GRP, proportion of third industries and investment in fixed assets have a significant impact on the polycentric development.
作者
罗庆
李小建
LUO Qing;LI Xiaojian(College of Resources and Environment,Collaborative Innovation Center of Urban-Rural Coordinated Development,Henan University of Economics and Law,Zhengzhou 450046,China;College of Environment and Planning,Key Research Institute of Yellow River Civilization and Sustainable Development,Henan University,Kaifeng 475004,China)
出处
《地理研究》
CSSCI
CSCD
北大核心
2019年第1期155-166,共12页
Geographical Research
基金
国家自然科学基金项目(41771141
41471117)
教育部人文社会科学重点研究基地重大项目(16JJD770021)
河南省哲学社会科学规划项目(2017BJJ005)
关键词
城市中心识别
城市中心发展
影响因素
VIIRS夜间灯光
identification of urban center
urban center development
influencing factor
VIIRS night light
