成渝城市群网络空间格局及其结构韧性评估  

Evaluation of network spatial pattern and structural resilience of Chengdu-Chongqing urban agglomeration

作　　者：高鑫 丁晨浩 巫昊燕 余鑫鑫 GAO Xin;DING Chenhao;WU Haoyan;YU Xinxin

机构地区：[1]重庆师范大学地理与旅游学院

出　　处：《西部人居环境学刊》2024年第3期147-154,共8页Journal of Human Settlements in West China

基　　金：国家自然科学基金(41601149);国家社会科学基金(19XGL027);重庆市自然科学基金(cstc2019jcyj-msxmX0290);重庆市教育委员会科学技术研究项目(KJQN202000515)。

摘　　要：城市群是我国区域发展的重要主体,其内部表现为各节点相互联系的复杂网络,分析其在急性冲击与慢性压力下的韧性表现对区域安全可持续发展有重要意义。本文以2020年成渝城市群16个地级市为研究对象,构建交通、经济、信息和综合联系网络,从层级性、匹配性、传输性、集聚性四方面评估其网络结构韧性,模拟分析中断环境下网络结构的吸收能力和容错能力。结果表明:成渝城市群网络空间格局“双核”为引领,层级差异鲜明。拓扑结构绝对极化与相对均衡化并存。网络层级性非均质化与立体化特征显著;异配性强且同质抱团现象不显著;传输效率偏高,可达性与扩散性较强;头部城市强集聚与非核心城市单向联系。在中断环境下,吸收能力与容错能力表现为信息网络>经济网络>综合网络>交通网络。Urban clusters are vital for regional development in China,internally characterized by a complex network of interconnected nodes.Analyzing their resilience to acute shocks and chronic pressures is crucial for the sustainable development and security of the region.This paper investigates the 16 prefecture-level cities within the Chengdu-Chongqing urban cluster as of 2020.It constructs networks of transportation,economy,information,and comprehensive connections.The network’s resilience is assessed from four perspectives:hierarchy,matching,transmission,and agglomeration.Simulation analysis is used to examine the network structure’s absorption and fault tolerance capabilities in a disrupted environment.Results show that the Chengdu-Chongqing urban cluster’s network spatial pattern is dominated by a“dual-core”,with pronounced hierarchical differences.The“dual-core”and“networked”patterns are significant in the transportation connectivity network.The economic and information connectivity networks display“bow-shaped”and“spider-web-like”patterns respectively.The comprehensive connectivity network’s“networked”feature is the most pronounced.The topological structure exhibits both absolute polarization and relative equalization.Within the economic network’s topology,the core area is“dual-driven”,with a significant agglomeration effect in the southern cities.In the topology of the information network,node connections are diversified and tend to favor core cities.In the comprehensive network’s topology,the“dual-core”main structure persists throughout,with secondary central cities having the potential but not the power to balance.The formation of topological structures results from the combined effects of multiple factors,including geographical conditions,resource distribution,economic development levels,and policy guidance.Developmental differences and collaborative actions within urban clusters cause the network structures of various fields to exhibit characteristics of both absolut

关 键 词：成渝城市群 城市网络 网络结构韧性 韧性评估 

分 类 号：TU984.113[建筑科学—城市规划与设计]