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基于PCA-ESDA的成渝城市群经济发展空间差异研究
黎小龙, 胡晓鸣
浙江大学城市规划与设计研究所
摘要:
基于统计年鉴面板数据,运用主成分分析法(PCA)和探索空间数据法(ESDA)对成渝城市群各城市经济发展水平进行综合测度,并在空间上对其集聚和异质性进行分析。研究提取出经济实力、经济品质和经济结构三项主成分,评价得分和空间相关性的综合研究表明:经济实力上,全局与局部相关性均不显著,成渝两城市极化明显,缺乏区域副中心城市,城市群发展能级不足;经济品质上,空间相关性以“二元集聚”的异质性显著呈现,重庆地区辐射带动效应强于四川地区;经济结构上,“川东-渝西”产业板块日益显现,但存在产业同质化现象。研究综合面板数据和空间地理数据,客观揭示了成渝城市群的经济发展水平差异,并提出相应的发展对策,以期对成渝区域协调发展提供理论和实践参考。
关键词:  成渝城市群  主成分分析  探索空间数据分析  经济发展  空间差异
DOI:
分类号:TU984
基金项目:
Spatial Disparities of Economic Development of Chengdu-Chongqing City Group Based on PCA-ESDA
LiXiaolong, HuXiaoming
Urban Planning and Design Institute of Zhejiang University
Abstract:
Based on the statistical yearbook data, this paper uses Principal Component Analysis (PCA) and Exploratory Spatial Data (ESDA) to comprehensively measure the economic level of Chengdu City Group. And spatially analyze its agglomeration and heterogeneity. The study extracted three main components of economic strength, economic quality and economic structure. A comprehensive study of evaluation scores and spatial correlations shows that the overall and local correlations are not significant in terms of economic strength. The two cities are highly polarized and there lacks regional sub-center cities. In terms of economic quality, spatial correlation presents “binary agglomeration”. The driving effect of Chongqing is stronger than that of Sichuan. In terms of economic structure, the industrialization section of “Sichuan East-Chongqing West” has significant correlation, but the homogenization is obvious. This study integrates panel data and spatial geographic data to objectively reveal the economic level differences of Chengdu-Chongqing urban agglomerations, and proposes corresponding development strategies in order to provide theoretical and practical reference for the coordinated development of Chengdu-Chongqing.
Key words:  Chengyu city group  principal component analysis (PCA)  exploratory spatial data analysis (ESDA)  economic development  spatial disparity