我国国家级城市群信息流多中心网络演变特征研究

Research on the Evolution of Multi-Center Network of National Urban Agglomeration Based on Baidu Index

全球区域城市发展正通过分散集聚,逐步从单中心集聚化走向多中心网络化,与此同时,随着互联网技术的日趋成熟与普及,信息流已成为区域内各城市之间联系的重要表征。文章以截至2017年我国已获批或具有区域发展引领作用的八大国家级城市群为例,利用2011年与2017年的百度指数数据,测算各城市群信息流首位度与次位度的变化趋势,进而对城市群的信息流中心与信息流网络的变化趋势进行分类,并对各类城市群进行分情景解析,认知八大国家级城市群的多中心网络演变进程,为我国城市群发展策略研究提供基础。

Globally,urban development is gradually changing from single-central agglomeration to multi-center networking through decentralized agglomeration.At the same time,with the increasing maturity and popularity of Internet technology,information flow has become an important symbol of connection between cities in a region.Taking the eight national urban agglomerations that have been approved or played a leading role in regional development in China as of 2017 as examples,this paper measures the changes of the First Degree and Second Degree of information flow of each urban agglomeration by using Baidu index data of 2011 and 2017,and then classifies the trends of information flow centers and information flow networks in urban agglom-erations.In addition,the paper analyzes the scenarios of various urban agglomerations to recognize the evolution of multi-center networks in eight national urban agglomerations and to provide a basis for the study of urban agglomeration development strategies in China.