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Urban Vulnerability under the Extreme High Temperatures in the Chengdu-Chongqing Area, Western China

Author

Listed:
  • Zhaoqi Yin

    (School of Geographical Sciences, China West Normal University, Nanchong 637002, China)

  • Weipeng Li

    (School of Geographical Sciences, China West Normal University, Nanchong 637002, China
    Sichuan Provincial Engineering Laboratory of Monitoring and Control for Soil Erosion on Dry Valleys, China West Normal University, Nanchong 637002, China)

  • Zhongsheng Chen

    (School of Geographical Sciences, China West Normal University, Nanchong 637002, China
    Sichuan Provincial Engineering Laboratory of Monitoring and Control for Soil Erosion on Dry Valleys, China West Normal University, Nanchong 637002, China)

  • Li Zhu

    (Severe Weather in Northeast Sichuan Key Laboratory of Nanchong City, Nanchong 637000, China)

  • Panheng Shui

    (School of Geographical Sciences, China West Normal University, Nanchong 637002, China)

Abstract

The frequent occurrence of extreme high-temperature events in the summer under global climate change poses a serious threat to Chinese society. An urban vulnerability evaluation system for counties in the Chengdu-Chongqing Area was constructed to calculate the urban vulnerability and distribution characteristics of each district. In this study, a vulnerability-contribution model was used to analyze the types of urban vulnerability in the Chengdu-Chongqing Area. Additionally, combined with the optimal parameter geographic detector (OPGD) model, the main influencing factors and interactions of urban vulnerability were explored. The results show that: ① The urban vulnerability of the Chengdu-Chongqing Area is high in the east and low in the west, with vulnerability degree mostly below the medium degree. ② Exposure contributes more than 50% to severe and general urban vulnerability in the region, while adaptability contributes the highest proportion to mild urban vulnerability, reaching 47.53%. ③ From the factor perspective, the impact ratio of high-temperature days on urban vulnerability is 39.1%, and the interaction between various meteorological factors and social factors produces an enhancement effect, with the highest interaction q -value reaching 0.7863.

Suggested Citation

  • Zhaoqi Yin & Weipeng Li & Zhongsheng Chen & Li Zhu & Panheng Shui, 2024. "Urban Vulnerability under the Extreme High Temperatures in the Chengdu-Chongqing Area, Western China," Sustainability, MDPI, vol. 16(11), pages 1-17, June.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:11:p:4749-:d:1407546
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    References listed on IDEAS

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    1. Tarik Benmarhnia & Patrick Grenier & Allan Brand & Michel Fournier & Séverine Deguen & Audrey Smargiassi, 2015. "Quantifying Vulnerability to Extreme Heat in Time Series Analyses: A Novel Approach Applied to Neighborhood Social Disparities under Climate Change," IJERPH, MDPI, vol. 12(9), pages 1-11, September.
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