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Dataset for Identifying Chinese Urban Agglomerations Using DBSCAN Clustering under Dominant Flow Constraints


LI Juan1ZHANG Yang*1TANG Song1LIU Xuhong1
1 College of Geography and Planning,Chengdu University of Technology,Chengdu 610059,China

DOI:10.3974/geodb.2025.08.01.V1

Published:Aug. 2025

Visitors:74       Data Files Downloaded:1      
Data Downloaded:31.23 MB      Citations:

Key Words:

urban agglomeration identification,human mobility network,central cities,dominant flow constraint,DBSCAN clustering,

Abstract:

Urban agglomerations serve as key spatial carriers for advancing new urbanization and promoting high-quality development. Scientifically delineating the spatial boundaries of urban agglomerations is fundamental for related research and planning practices. Based on a clear conceptual understanding of urban agglomerations, this study firstly identifies central cities, and secondly constructs an intercity human mobility network using Baidu migration data,Lastly the 27 spatial extent of urban agglomerations in China is delineated using DBSCAN clustering under dominant flow constraints. They are the urban agglomerations of Suzhou-Wuxi-Changzhou, Nanjing, Hangzhou, Hefei, Ningbo, Nanchang, Changsha-Zhuzhou-Xiangtan, Wuhan, Fuzhou, Xiamen, Guangzhou-Shenzhen, Nanning,Liuzhou,Guilin, Guiyang, Chongqing, Chuannan, Chengdu, Nanchong, Kunming, Xi’an, Zhengzhou, Jinan, Qingdao, Dalian, Shenyang and Harbin. The dataset includes: (1) central cities list and their spatial distribution; (2) a matrix of intercity human mobility intensity and the corresponding mobility network; (3) identified urban agglomerations and their spatial distribution. The dataset is archived in .shp and .xlsx formats, comprising 29 data files with data size of 67.8 MB (compressed into one single file with 31.2 MB).

Foundation Item:

National Natural Science Foundation of China (52478045)

Data Citation:

LI Juan, ZHANG Yang*, TANG Song, LIU Xuhong. Dataset for Identifying Chinese Urban Agglomerations Using DBSCAN Clustering under Dominant Flow Constraints[J/DB/OL]. Digital Journal of Global Change Data Repository, 2025. https://doi.org/10.3974/geodb.2025.08.01.V1.

References:


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Data Product:

ID Data Name Data Size Operation
1 MetropolitanAreaDelineation.rar 31981.49KB
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