摘要
比较分析长江经济带三大城市群规模结构演变,可为分区域优化我国城市群结构、促进长江上中下游协同发展提供参考。采用DMSP2OLS和NPP2VI IRS数据构建夜间灯光总量集成序列,运用标准差、变异系数、赫芬达尔指数、位序-规模法则、等级钟、马尔科夫转移矩阵对1995-2015年长江经济带三大城市群规模差异及规模结构演变特征进行比较分析,结果表明:1)各城市群内部绝对差异逐年扩大,相对差异和集聚度均逐年缩小;2)长三角城市群由首位分布向位序规模分布转变,长江中游城市群由首位分布向分散均衡分布转变,成渝城市群由强首位分布向弱首位分布转变,三大城市群规模结构均衡性自东向西依次减弱,首位城市均有待进一步提升;3)三大城市群规模等级锁定现象明显,跨等级转移特征差异显著;4)三大城市群中位序城市波动明显,长三角城市群位序波动最小,长江中游城市群位序波动最大。
Comparative analysis on evolution of scale structure among three major urban agglomerations in the Yangtze River Economic Belt can provide references for optimizing the scale structure of urban agglomerations in different regions of China and promoting the synergetic development of the upper,middle and lower reaches of the Yangtze River.This paper established an integrated time-series of total nighttime light (TNL) derived from DMSP-OLS data and NPP-VIIRS data,and compared the differences of TNL and the dynamic features of scale structure among three urban agglomerations in the Yangtze River Economic Belt from 1995 to 2015 based on standard deviation,coefficient of variation,Herfindahl-Hirschman index,rank-size rule,rank-clock and Markov chain.Results indicated that:1) The absolute difference within each urban agglomeration expands year by year,while the relative difference and agglomeration degree decrease.2) The equilibrium of scale structure in urban agglomerations weakens progressively from east to west,and the primary city in each urban agglomeration still needs to be improved.In addition,the scale structure in the Yangtze River-Delta urban agglomeration has changed from primary distribution to rank-size distribution,while that of the urban agglomeration in the middle reaches of the Yangtze River has switched from primary distribution to decentralized distribution,and that of the Chengdu-Chongqing urban agglomeration has transformed from strong to weak primary distribution.3) The lock-in phenomenon of urban hierarchy in each urban agglomeration appears obvious,and the cross-level transfer characteristics of the three urban agglomerations present significant differences.4) The rank of medium cities within each urban agglomeration shows significant fluctuation.Furthermore,there is smaller fluctuation in the rank of cities in the Yangtze River-Delta urban agglomeration,while the rank of cities in the urban agglomeration in the middle reaches of the Yangtze River demonstrates the more prominent fluctuation.
作者
晁静
赵新正
李同昇
青雨馨
CHAO Jing;ZHAO Xin-zheng;LI Tong-sheng;QING Yu-xin(College of Urban and Environmental Science,Northwest University,Xi′an 710127;College of Architecture and Urban Planning,Nanjing University,Nanjing 210093,China)
出处
《地理与地理信息科学》
CSCD
北大核心
2020年第1期44-51,I0003,共9页
Geography and Geo-Information Science
基金
国家自然科学基金项目(41771129、41401184)
教育部人文社科项目(14YJCZH222)
关键词
夜间灯光数据
城市群
规模结构
长江经济带
nighttime light data
urban agglomeration
scale structure
the Yangtze River Economic Belt
