Research on Ecological Vulnerability of the Yellow River Basin Targeting Urban Agglomerations
The Yellow River Basin is an important ecological barrier in China.Its ecological protection and sustainable development are major national strategies.This necessitates leveraging the leading role of urban agglomerations in regional development.However,discrepancies in natural ecological endowments and uneven development between the upstream and downstream,coupled with insufficient collaboration among urban clusters,impede the high-quality development of the basin.Based on the Sensitivity-Resilience-Pressure(SRP)model and the Spatial Principal Component Analysis(SPCA)method,this study constructed an ecological vulnerability evaluation system for urban agglomerations in the Yellow River Basin.The system was employed to conduct a quantitative assessment of ecological vulnerability in five urban agglomerations in 2020,including the Shandong Peninsula Urban Agglomeration,the Central Plains Urban Agglomeration,the Guanzhong Plain Urban Agglomeration,the Bend area of Yellow River Metropolitan,and the Lanzhou-Xining Urban Agglomeration.Additionally,a hierarchical clustering method was utilized to divide the 613 counties in the region into different ecological vulnerability zones to explore the impact of human activities on ecological vulnerability.The results show that:(1)In 2020,the ecological vulnerability of the urban agglomeration in the Yellow River Basin is relatively high,with an average value of 0.53.Ecological resilience is the primary factor affecting ecological vulnerability,with a weight of 0.55.(2)Spatially,the urban agglomerations in the Yellow River Basin were dominated by moderately vulnerable areas,accounting for 64.08%of the total area.(3)Human activities have broad impact on ecological vulnerability,with 76.02%of counties showing a significant correlation between human activities and ecological vulnerability(P＜0.05),especially in moderately vulnerable areas.(4)The study identifies eight types of ecologically vulnerable areas,with the largest coverage found in the central-eastern agricultural sensitivity type,accounting for 30.40%,while the central urban vulnerability type and mining vulnerability type have the smallest coverage,at 0.37%and 0.25%,respectively.Overall,the research indicates that urban agglomerations in the Yellow River Basin exhibit varying degrees of ecological vulnerability,with the Shandong Peninsula Urban Agglomeration and the Bend area of Yellow River Metropolitan demonstrating the highest ecological vulnerability values.These findings necessitate the implementation of targeted spatial layout optimization and ecological restoration measures to promote sustainable development of these urban agglomerations.
urban agglomerationmetropolitan areasthe Yellow River Basinecological sensitivityhierarchical clusteringhuman disturbances
万方数据
维普
