The extensive flow of elements between ur-ban agglomerations is an important representation of high-quali-ty regional development.Taking the Pearl River Delta urban ag-glomeration as an example,the research focuses on the core flow resources of regional collaboration:the flow of people and cap-ital.It selects high-spatial accuracy inter-city migration data and inter-city corporate investment data,and further uses the city niche model to build a collaboration analysis framework based on flow data,specifically including network construction,flow element resource classification,niche breadth analysis,niche overlapping analysis,and specific resource utilization rela-tionship analysis.The study found that the current resource flows in the Pearl River Delta region are clustered according to differ-ent classifications.The overall flow characteristics are represen-ted by taking Shenzhen,Guangzhou,and Zhuhai as cores,and taking Sheng-Guan-Hui,Guang-Fo-Zhao,and Zhu-Zhong-Jiang as heterogeneous structural clusters.Combined with niche analysis,the research indicates that the urban ag-glomeration needs to optimize the niche structure of the east bank units by promoting regional industrial clusters;broaden the niche breadth of the west bank units and connect the units to be developed with low breadth,low overlapping and high exchange volume to improve the coordinated development level of the re-gion.
flow datacooperative relationshipNiche Theoryhigh-quality developmentThe Pearl River Delta Ur-ban Agglomeration