Characteristics and Influencing Factors of Ecological Security Evolution in the Upper Yellow River City Cluster Based on Spatial Linkage Network Structure
ZHAO Yu
WANG Wenyi
Abstract：In order to analyze the evolutionary characteristics and influencing factors of ecological security of the city cluster in the upper Yellow River,the driving-pressure-state-impact-response(DPSIR)model was adopted to evaluate the ecological security of nine cities in the upper Yellow River from 2010 to 2021.By modifying the gravity model,the spatial linkage gravity of ecological security of each city in the city cluster was determined and the network was built.The social network analysis was used to reveal the evolution of spatial network structure of ecological security in the city cluster,and the quadratic assignment procedure(QAP)was used to explore the factors affecting the ecological security of the city cluster from the perspective of the spatial linkage network.The results showed that over time,the ecological security level of the cities of the city cluster in the upper Yellow River was continuously improved and gradually reached the critical security level.In the spatial linkage network structure,the ecological security of the cities in the city cluster was characterized by a low degree of closeness,but the whole network structure was in a relatively stable state and developed in the direction of complexity.Lanzhou City,as the core city,produced a large resource spillover effect on the neighbouring cities,and a"core-edge"network structure was found among the cities.The ecological security network structure of the city cluster in the upper Yellow River was affected by factors such as geospatial proximity,scientific and technological level,energy supply,and differences in the level of sustainable development.This study provided a scientific basis and decision-making reference for enhancing the correlation of the city cluster in the upper Yellow River and improving the management of the city cluster′s ecological safety.
Keywords：spatial linkage networkupper Yellow River regioncity clusterecological securitymodified gravity modelsocial network analysisQAP
Publication Date：2024-09-20
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 409-418 )