This article constructs an urban logistics network based on the real freight data as logistics"flow data",analyzes the logistics network of the Yangtze River Economic Belt from four-type logistics connections of highway,railway,waterway and air,and combines complex network theory and different simulation attack strategies to evaluate the static resilience and dynamic resilience of logistics network structure.It also explores the resilience performance of logistics network in response to risk shocks by simulating the COVID-19 pandemic.The results show that:1)The Yangtze River Economic Belt has formed a logistics network with the highway and railway transportation as the mainstay,water transportation as the auxiliary,and air transportation as the supplement,in which provincial capital cities play an important hub function.2)The logistics network has significant hierarchy and heterogeneity,and has good transmission resilience,but logistics resources are excessively concentrated in core cities,which may cause blockage and rigidity in local areas;3)The resilience ability of logistics network structure is not fixed,but shows a stage change characteristic with the increase of risk shocks.The core network can still maintain the normal operation of the whole network without serious damage.4)In the COVID-19 pandemic simulation experiment,the lockdown of Shanghai and other core cities has not caused the logistics network to collapse.Other cities can strengthen their own intermediary role to make up for the lack of network core,and rebalance the network structure.Therefore,from the perspectives of logistics infrastructure,dominant nodes,and vulnerable nodes,it proposes some optimization suggestions for the resilience of the logistics network structure.
关键词
风险常态化/物流网络/网络结构韧性/公路与铁路/新冠疫情/攻击策略/物流基础设施
Key words
risk normalization/logistics network/network structure resilience/highway and railway/COVID-19 pandemic/attack strategy/logistics infrastructure
维普
万方数据