城市群间的要素流动是区域高质量发展的重要表征。以珠三角城市群为例,选择区域协同的核心资源——人流与资金流作为研究对象,利用高空间精度的跨城通勤数据与跨城企业投资数据构建基于流数据的城市群协同认知框架,在此基础上进行网络构建,开展流要素资源分类及生态位宽度、生态位重叠度和具体资源利用关系分析。研究发现,珠三角地区资源流动结构整体上具有以深圳、广州、珠海为节点,以“深莞惠”“珠中江”“广佛肇”为异质性结构组团的特征。生态位分析结果表明,珠三角城市群不仅应通过优化东岸单元生态位结构促进区域产业集群发展,同时应通过拓宽西岸单元生态位宽度,连接低宽度、低重叠度、高交换量的待发展单元,提高区域综合协同发展水平。
The extensive flow of elements between urban agglomerations is an important representation of high-quality regional development. Taking the Pearl River Delta urban agglomeration as an example, the research focuses on the core flow resources of regional collaboration: the flow of people and capital. 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 relationship analysis. The study found that the current resource flows in the Pearl River Delta region are clustered according to different classifications. The overall flow characteristics are represented 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 agglomeration 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 region.
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