基于多源数据的广佛都市区城市引力结构特征分析

doi:10.13284/j.cnki.rddl.003401

Abstract

Abstract:

As the endogenous driving force of regional development, the development of urban entities in metropolitan areas has a great influence on the development of the metropolitan areas, while the interactions between the urban entities' systems directly affect the metropolitan areas' development. Studying the relationship between urban entities in metropolitan areas and the basic development law of the structure between urban centers can provide some reference for the planning, development, and construction management of the urban centers and their surrounding areas in the metropolitan areas. Although the core entity territory of Guangzhou-Foshan has been contiguous, its development connection with the peripheral urban territories remains the focus of research. In the context of the synergistic development of the Bay Area, exploring the characteristic relationships between the urban territories in the Bay Area hinterland can provide a positive response to the sustainable development of the Bay Area cities. This study constructs a POI & NPP composite index by a mathematical mean method to determine the POI & NPP composite value and the number of urban centers; Based on the feature that the integrated data will produce abrupt changes at the boundary, the city's boundary extent is then analyzed using the fracture point analysis method. We then analyze the strength and direction of the gravitational force between the urban entities within the Guangzhou-Foshan metropolitan area by adding the modified gravitational force model based on the divided urban-entity territory and the POI & NPP composite index within the scope. The results show the following: (1) A "7+1" urban system structure centered on the core area is formed in the Guangzhou-Foshan metropolitan area. (2) A "heptagonal" positive urban system structure is generated around the core area and a "hexagonal." (3) The urban triangle structure is the basic unit of the Guangzhou-Foshan urban gravitational structure, while the better-developed urban clusters are "Core-Shunde-Nansha," "Core-Shunde–Gaoming," "Core-Sanshui–Huadu," "Core-Huadu-Conghua," "Core-Zengcheng-Nansha," and "Core." (4) The size and structural stability of the gravitational potential of the Guangzhou-Foshan metropolitan area are positively related to the intensity of the urban economic functions.

Key words: Night light data, point-of-interest, urban gravitational model, gravitational structural characteristics, Guangzhou-Foshan Metropolitan Area

CLC Number:

F299.2

Wei Zhan, Chaolong Chen, Wu Sun, Pengfei Ban. Characteristics of the Urban Gravity Structure in the Guangzhou-Foshan Metropolitan Area Based on Multi-Source Data[J].Tropical Geography, 2021, 41(6): 1292-1302.

Figures/Tables 8

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分区		核心区	增城区	顺德区	三水区	南沙区	花都区	高明区	从化区
城市中心引力	核心区	—	5.973	109.665	14.395	17.515	80.604	10.630	4.696
	增城区	0.097	—	0.033	0.007	0.020	0.047	0.006	0.089
	顺德区	5.919	0.161	—	0.376	1.566	0.359	0.638	0.102
	三水区	0.272	0.216	0.087	—	0.015	0.127	0.240	0.022
	南沙区	0.331	0.062	0.364	0.045	—	0.050	0.053	0.025
	花都区	5.758	0.279	1.109	0.669	0.261	—	0.264	0.515
	高明区	0.182	0.017	0.139	0.080	0.018	0.0467	—	0.013
	从化区	0.070	0.030	0.020	0.007	0.008	0.081	0.004	—
城市引力势能		243.478	0.299	9.121	0.979	0.933	8.855	0.495	0.220

城市三角组团	正向引力循环	负向引力循环
核心区—花都—从化组团	85.325	5.909
核心区—从化—增城组团	10.758	0.197
核心区—增城—南沙组团	23.55	0.448
核心区—南沙—顺德组团	128.746	6.614
核心区—顺德—高明组团	120.933	6.24
核心区—高明—三水组团	25.265	0.534
核心区—三水—花都组团	95.668	6.157

分区	地区生产总值/亿元	人均GDP/万元	公共财政收入均值/亿元	固定投资资产/亿元	消费品零售总额/亿元	城市经济职能强度
核心区	23 165.92	155.16	894.1	5 854.02	9 963.87	5.220
增城区	1 124.11	9.30	95.16	1 005.48	370.98	0.415
顺德区	3 163.93	11.90	235.78	1 101.98	971.89	0.771
三水区	1 227.95	18.57	62.44	799.02	240.68	0.396
南沙区	1 458.41	19.75	75.19	588.18	208.77	0.392
花都区	1 358.37	12.53	84.82	413.7	524.6	0.365
高明区	879.48	19.92	40.4	490.99	139.47	0.304
从化区	416.68	6.46	28.87	188.86	123.45	0.136

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Characteristics of the Urban Gravity Structure in the Guangzhou-Foshan Metropolitan Area Based on Multi-Source Data

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