Spatial Spillover Effect and Influencing Factors of Information Flow in Urban Agglomerations—Case Study of China Based on Baidu Search Index
Spatial Spillover Effect and Influencing Factors of Information Flow in Urban Agglomerations—Case Study of China Based on Baidu Search Index
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DOI：
10.3390/su13148032
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发表时间：
2021-07
期刊：
影响因子：
3.9
通讯作者：
Chengzhuo Wu;L. Zhuo;Zhuo Chen;Haiyan Tao
中科院分区：
文献类型：
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作者：
Chengzhuo Wu;L. Zhuo;Zhuo Chen;Haiyan Tao
城市群中的城市通过各种流动紧密地相互作用。信息流作为城市互动的重要形式之一，随着信息技术的飞速发展，其重要性日益凸显。信息流因其及时、便捷、空间不受约束的传播能力，具有明显的溢出效应，可以加强城市互动，进一步促进城市协调发展。因此，对信息流的空间溢出效应及其影响因素进行量化研究，尤其是在城市群尺度上，显得尤为重要。然而，学术界对这一问题的研究还很不够。基于百度搜索指数构建信息流空间互动模型（SIM-IF），分析2014-2019年京津冀、长三角、珠三角三大城市群信息流溢出效应及其影响因素。结果表明，SIM-IF在所有三种团聚体中表现良好。定量分析结果表明，环渤海地区的信息流溢出效应最强，长三角和珠三角次之。研究还发现，城市等级对信息流溢出效应的影响最大。该研究可为城市群信息流建设提供科学依据，有利于城市群的协调发展。
Cities in an urban agglomeration closely interact with each other through various flows. Information flow, as one of the important forms of urban interactions, is now increasingly indispensable with the fast development of informatics technology. Thanks to its timely, convenient, and spatially unconstrained transmission ability, information flow has obvious spillover effects, which may strengthen urban interaction and further promote urban coordinated development. Therefore, it is crucial to quantify the spatial spillover effect and influencing factors of information flows, especially at the urban agglomeration scale. However, the academic research on this topic is insufficient. We, therefore, developed a spatial interaction model of information flow (SIM-IF) based on the Baidu Search Index and used it to analyze the spillover effects and influencing factors of information flow in the three major urban agglomerations in China, namely Beijing–Tianjin–Hebei (BTH), the Yangtze River Delta (YRD), and the Pearl River Delta (PRD) in the period of 2014–2019. The results showed that the SIM-IF performed well in all three agglomerations. Quantitative analysis indicated that the BTH had the strongest spillover effect of information flow, followed by the YRD and the PRD. It was also found that the hierarchy of cities had the greatest impact on the spillover effects of information flow. This study may provide scientific basis for the information flow construction in urban agglomerations and benefit the coordinated development of cities.