耦合网络视角下长三角地区紧凑性的演化特征

doi:10.18306/dlkxjz.2022.11.003

地理科学进展 ›› 2022, Vol. 41 ›› Issue (11): 2018-2029.doi: 10.18306/dlkxjz.2022.11.003

耦合网络视角下长三角地区紧凑性的演化特征

韩刚¹(), 唐乐¹^,²^,^*(), 刘志敏³, 张国庆⁴

1.淮阴工学院建筑工程学院，江苏淮安 223001
2.中国科学院南京地理与湖泊研究所，南京 210008
3.上海社会科学院城市与人口发展研究所，上海 200020
4.安徽省阜阳市城乡规划设计研究院，安徽阜阳 236000

收稿日期:2022-03-28 修回日期:2022-07-21 出版日期:2022-11-28 发布日期:2023-01-28
通讯作者: *唐乐(1986— )，男，江苏宿迁人，博士，副教授，硕士生导师，主要研究方向为城市更新与城乡空间治理。E-mail: tangle910365@sina.com
作者简介:韩刚(1989— )，男，甘肃白银人，博士，讲师，主要研究方向为区域发展与城市地理。E-mail: hregion@163.com
基金资助:
江苏省社会科学基金项目(18EYC003);江苏省高校哲学社会科学研究项目(2022SJYB1947)

Evolution characteristics of compactness in the Yangtze River Delta from the perspective of coupled network

HAN Gang¹(), TANG Le¹^,²^,^*(), LIU Zhimin³, ZHANG Guoqing⁴

1. Faculty of Architecture and Civil Engineering, Huaiyin Institute of Technology, Huai'an 223001, Jiangsu, China
2. Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, China
3. Institute of Urban and Demographic Studies, Shanghai Academy of Social Sciences, Shanghai 200020, China
4. Urban and Rural Planning Design Institute of Fuyang, Fuyang 236000, Anhui, China

Received:2022-03-28 Revised:2022-07-21 Online:2022-11-28 Published:2023-01-28
Supported by:
Social Science Foundation of Jiangsu Province(18EYC003);Project of Philosophy and Social Science of Jiangsu University(2022SJYB1947)

摘要/Abstract

摘要：

区域紧凑作为紧凑城市理念在更大空间尺度的扩展，指通过城市间有效的相互作用，实现区域一体化发展的地理空间模式。论文以长三角地区为实证对象，基于高铁和城际大巴2种交通出行方式构建区域耦合网络，选取最短出行时间和出行路径评估城市间作用关系的紧凑程度，从全局网络复杂性、核心—边缘结构演化、局部模体结构等层面系统考察长三角地区紧凑性的演化特征。研究发现，长三角地区城市紧凑性在全局层面存在明显的分异特征，随着时间推移，紧凑性分布的不均衡现象逐步突出，空间上的集聚特征趋于显著；局部层面上，紧凑性处于从集聚向均衡的成长阶段，稳定状态下易形成低成本的局部高聚类特征，就城市个体而言，由局部结构涌现的角色类别表现出多样性选择机制。与已有研究相比，论文将紧凑性与出行网络有机衔接，从关系视角为区域紧凑性探索提供了有益尝试。

关键词: 耦合网络, 紧凑性, 网络模体, 长三角地区

Abstract:

Regional compactness refers to the urban form of synergistic integration through effective interactions. In essence, it is the reallocation process of factors of production, affected comprehensively by many factors, such as spatial-temporal distance, economic scale, market competition, and policy cooperation. The Yangtze River Delta, one of the regions with the highest level of urbanization in China, has produced many practical problems that affected the coordinated development of the region towards the goal of integration and high quality development. Regional compactness is an expansion of the compact city concept in a larger space, which is considered a better geospatial model to achieve regional integration. Therefore, analyzing the evolution characteristics of compactness of the Yangtze River Delta is helpful for identifying the real stage of the Yangtze River Delta's integrated development and the key pathways of regional compactness construction and governance. This study evaluated the relationship of cities by variables of spatial-temporal distance. In the Yangtze River Delta region, intercity traffic characterizes multi-modal transportation, forming a coupled nested network composed of high-speed railways and highways. This study evaluated city compactness by the shortest travel time and travel path provided by the coupled network and constructed a compact network map. Furthermore, from the macro to the micro scales, it analyzed the spatial distribution and evolution of compactness characteristics from four aspects: The global spatial distribution, structure, the local node organization and location. The study found that the urban compactness of the Yangtze River Delta has obvious global differentiation characteristics. As time goes on, its uneven compactness distribution gradually became obvious, and its spatial agglomeration tends to be significant. At the local scale, city compactness is in the transitional period from agglomeration to equilibrium, and it tends to have the local high-clustering features at low cost in a stable state. With regard to the cities themselves, the role categories emerging from the local structure show a diversified selection mechanism.

Key words: coupled network, compactness, network motifs, Yangtze River Delta

韩刚, 唐乐, 刘志敏, 张国庆. 耦合网络视角下长三角地区紧凑性的演化特征[J]. 地理科学进展, 2022, 41(11): 2018-2029.

HAN Gang, TANG Le, LIU Zhimin, ZHANG Guoqing. Evolution characteristics of compactness in the Yangtze River Delta from the perspective of coupled network[J]. PROGRESS IN GEOGRAPHY, 2022, 41(11): 2018-2029.

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欧氏距离/km	距离权重
[0, 50]	2.0
(50, 150]	1.5
(150, 300]	1.0
(300, 500]	0.5
>500	0

	聚集类型	t+1时期				类型	n	概率/%
	聚集类型	HH	LH	LL	HL	类型	n	概率/%
t时期	HH	类型0 (0.913)	类型Ⅰ (0.071)	类型Ⅲ (0.005)	类型Ⅱ (0.011)	类型0	527	85.69
	LH	类型Ⅰ (0.112)	类型0 (0.757)	类型Ⅱ (0.131)	类型Ⅲ (0)	类型Ⅰ	54	8.78
	LL	类型Ⅲ (0)	类型Ⅱ (0.059)	类型0 (0.879)	类型Ⅰ (0.063)	类型Ⅱ	33	5.37
	HL	类型Ⅱ (0.035)	类型Ⅲ (0)	类型Ⅰ (0.163)	类型0 (0.802)	类型Ⅲ	1	0.16
	Ergodic	0.285	0.179	0.395	0.141	—	—	—

时间	模体238			模体4958			模体13278			模体31710

	频率	Z值	P值	频率	Z值	P值	频率	Z值	P值	频率	Z值	P值
5:00	18.67	30.49	<0.001	28.06	15.94	<0.001	8.15	14.80	<0.001	2.80	38.99	<0.001
6:00	27.28	22.90	<0.001	35.51	20.33	<0.001	14.02	21.55	<0.001	4.63	60.83	<0.001
7:00	36.55	29.73	<0.001	37.21	20.37	<0.001	20.94	4.80	<0.001	9.55	32.13	<0.001
8:00	36.60	22.66	<0.001	35.99	16.62	<0.001	21.06	10.57	<0.001	9.51	33.34	<0.001
9:00	31.36	24.52	<0.001	37.67	17.51	<0.001	16.28	20.79	<0.001	6.47	42.57	<0.001
10:00	32.44	24.50	<0.001	37.04	19.37	<0.001	18.19	14.73	<0.001	7.32	37.86	<0.001
11:00	30.30	24.22	<0.001	35.84	14.77	<0.001	16.72	11.15	<0.001	6.27	26.16	<0.001
12:00	34.28	26.08	<0.001	37.35	16.76	<0.001	18.57	13.57	<0.001	7.96	29.29	<0.001
13:00	31.65	24.84	<0.001	37.14	18.13	<0.001	16.38	17.27	<0.001	6.48	45.94	<0.001
14:00	32.22	22.88	<0.001	38.08	18.35	<0.001	16.19	15.77	<0.001	6.82	41.15	<0.001
15:00	32.51	22.49	<0.001	36.88	22.29	<0.001	17.74	17.40	<0.001	7.14	52.09	<0.001
16:00	29.94	25.25	<0.001	36.80	18.83	<0.001	15.76	15.63	<0.001	5.89	39.67	<0.001
17:00	28.69	20.15	<0.001	35.86	16.63	<0.001	14.68	12.03	<0.001	5.56	34.14	<0.001
18:00	28.32	23.31	<0.001	35.89	16.84	<0.001	14.58	18.78	<0.001	5.54	32.20	<0.001
19:00	25.53	31.98	<0.001	33.75	18.70	<0.001	12.26	22.02	<0.001	4.29	57.41	<0.001
20:00	28.52	36.01	<0.001	35.47	21.87	<0.001	13.00	26.57	<0.001	5.19	79.46	<0.001

模体编号	出现次数/次	主要城市	结构内涵
238	915	南京(205)、上海(175)、苏州(164)、常州(159)、无锡(156)	3个城市互相间形成紧凑关系
4958	10040	南京(2357)、上海(2025)、杭州(1710)、合肥(1674)、苏州(1608)	3个城市互相形成紧凑关系，第4个城市仅与其中一个城市形成关系
13278	4713	南京(1340)、上海(1128)、苏州(1036)、常州(997)、无锡(974)	除某2个城市不形成紧凑关系外，4个城市两两紧凑关联
31710	1922	南京(640)、上海(535)、苏州(526)、常州(520)、无锡(512)	4个城市互相形成紧凑关系

耦合网络视角下长三角地区紧凑性的演化特征

Evolution characteristics of compactness in the Yangtze River Delta from the perspective of coupled network

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