Assessment of Flood Resilience in the Zhengzhou Metropolitan Area in 2022 Based on Principal Component Analysis
DOI:
https://doi.org/10.62051/ajmse.v1n1.02Keywords:
Zhengzhou metropolitan area, Flood disaster, Resilience, Principal component analysis, Natural breakpoint methodAbstract
Floods are characterized by their suddenness, destructive power, and unpredictability, posing serious threats to human society and the natural environment. Building resilience provides a new approach for urban systems to cope with floods. This study constructs a flood resilience index system and uses principal component analysis to comprehensively evaluate the basic resistance, disaster prevention and early warning, emergency response, and adaptive recovery capabilities of the Zhengzhou metropolitan area, thereby determining the resilience level of each city within the Zhengzhou metropolitan area. Simultaneously, the natural discontinuity method is used to compare the spatial differences in flood resilience among different cities. The results show that in 2022, the ranking of the comprehensive flood resilience scores of cities in the Zhengzhou metropolitan area was as follows: Zhengzhou > Pingdingshan > Xuchang > Xinxiang > Luohe > Luoyang > Jiyuan > Kaifeng > Jiaozuo, with Zhengzhou achieving the highest comprehensive flood resilience score. The 2022 flood resilience levels in the Zhengzhou metropolitan area show that 5 cities were at a low resilience level, 3 cities at a medium resilience level, and Zhengzhou at a high resilience level, exhibiting strong spatial differences and generally showing a pattern of high resilience in the middle and low resilience from east to west. The research findings can provide a basis for formulating policies to enhance the resilience of the Zhengzhou metropolitan area to flood disasters.
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