摘要
【目的】城市网络结构韧性是城市空间组织恢复力与稳定性的重要保障,当前研究多采用单一要素流且聚焦发达地区,而结合多维要素流同时关注欠发达地区网络结构韧性的成果相对较少,因此,本文以欠发达的西北地区为研究对象,并基于多维要素流探究其网络结构韧性,以期弥补相关研究在地域上的留白,并丰富多维要素流视角下网络韧性的实证分析。【方法】以西北地区51个地级行政单元为研究对象,从经济、交通、信息3个视角入手探究2022年西北城市网络的结构特征,定量测度其层级性、匹配性、传输性和集聚性,进而利用计算机仿真模拟研究中断场景下西北城市网络结构韧性,据此提出优化策略。【结果】①西北51个地级行政单元的经济、交通、信息网络总体呈“东密西疏”的分布格局,网络具有“核心-边缘”特点,但3类网络结构存在明显差异。经济网络密度较小、核心节点间的粘性较大,呈现出“以强带弱”与“强强联合”共存的特征、“多组团”格局和“片态化”发展态势;交通网络联系较为紧密,城际联系惯性较强,呈现出“小世界”效应、“纺锤型”格局和“紊态化”发展态势;信息网络具有广覆盖性和强渗透性,呈现出协调性特征、“条带状”格局和“湍态化”发展态势。②3类网络的层级性和匹配性差异较大,传输性和集聚性差异较小。经济网络“马太效应”明显,呈现出核心强同配性和边缘弱异配性特征;交通网络趋于立体化发展,表现出小范围“健壮性”和大面积“脆弱性”;信息网络具有高异配韧性,表现出网络结构扁平化和联系路径多元化特征。③蓄意攻击对网络韧性的破坏力显著高于随机攻击,对比脆弱节点,核心节点遭受打击对网络运转效率具有更大影响。【结论】区域发展不均衡的问题在欠发达地区尤为明显,核心城市“权力�
[Objective]The resilience of urban network structures is a crucial guarantee for the recovery and stability of urban spatial organization.Current research predominantly employs individual flows and focuses on developed regions,and there is relatively little research that combines multidimensional factor flows while also focusing on the resilience of network structures in underdeveloped regions.Therefore,this study took the underdeveloped Northwest China as the research object and explored its network structural resilience based on multidimensional factor flow, in order to fill the gap of related research and enrich the empirical analysis of network resilience from the perspective of multidimensional factor flow. [Methods] This study focused on 51 prefecture-level administrative units in Northwest China for the year 2022. It investigated the structural characteristics of urban networks from three perspectives: economic, transportation, and information, quantitatively measured their hierarchy, matching, transmission, and agglomeration,and examined the structural resilience of Northwest China’s urban networks under various disruption scenarios by using the method of computer simulation and proposed optimization strategies from different perspectives. [Results] (1) The economic, transportation, and information networks across the 51 prefecture-level administrative units in Northwest China are generally distributed in a pattern of dense in the east and sparse in the west, showing core-periphery characteristics, but there are significant differences in the structure of the three types of networks. The economic network density is low and the stickiness between the core nodes is large, showing the characteristics of coexistence of “strong assisting weak” and “strong alliances”, with multi-group pattern and fragmented development trend. The traffic network is more closely linked, with stronger inertia in intercity links, showing a “small world” effect, a spindle-shaped pattern, and a turbulent development tr
作者
郭倩倩
张志斌
马晓敏
赵学伟
GUO Qianqian;ZHANG Zhibin;MA Xiaomin;ZHAO Xuewei(College of Geography and Environmental Science,Northwest Normal University,Lanzhou 730070,China)
出处
《资源科学》
CSSCI
CSCD
北大核心
2024年第8期1636-1650,共15页
Resources Science
基金
国家自然科学基金项目(41161028
41961029)。
关键词
要素流
城市网络结构
韧性评估
中断模拟
优化策略
引力模型
西北地区
factor flows
urban network structure
resilience evaluation
disruption simulation
optimization strategy
gravity model
northwest China
