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An Accessibility Analysis of Emergency Shelters in Shenzhen Using the Gaussian-Based Two-Step Floating Catchment Area Method and Clustering

Author

Listed:
  • Qing Yang

    (School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China)

  • Yang Liu

    (School of Management, Wuhan University of Technology, Wuhan 430070, China)

  • Zhaolin Duan

    (School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China)

  • Xingxing Liu

    (School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China)

Abstract

The strategic planning of emergency shelters is vital for enhancing urban resilience against natural disasters, ensuring timely and equitable support for vulnerable populations. However, the existing studies often overlook the effects of fixed search radii and spatial heterogeneity in supply–demand matching. This study evaluated the spatial accessibility of emergency shelters in Shenzhen, a megacity in China, using a Gaussian two-step floating catchment area (G2SFCA) method integrated with K-means clustering. The analysis incorporated three service radii (1 km, 2.5 km, and 5 km) to assess accessibility levels across spatial scales. The results indicate the following: (1) The supply–demand balance of emergency shelters in Shenzhen varies significantly across service radii. A notable mismatch exists within 1000 m; at 2500 m, the demand in high-density areas is better met with reduced regional disparities, while at 5000 m, the spatial correlation between the supply and demand weakens considerably. (2) The cluster analysis revealed the distinct spatial clustering of supply–demand imbalances, primarily driven by population density. (3) The proposed method offers empirical support for optimized shelter allocation and improving the equity and efficiency of emergency resource distribution.

Suggested Citation

  • Qing Yang & Yang Liu & Zhaolin Duan & Xingxing Liu, 2025. "An Accessibility Analysis of Emergency Shelters in Shenzhen Using the Gaussian-Based Two-Step Floating Catchment Area Method and Clustering," Sustainability, MDPI, vol. 17(12), pages 1-22, June.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:12:p:5250-:d:1673486
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    References listed on IDEAS

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    1. Dean Kyne & Dominic Kyei, 2024. "Understanding Associations between Disasters and Sustainability, Resilience, and Poverty: An Empirical Study of the Last Two Decades," Sustainability, MDPI, vol. 16(17), pages 1-23, August.
    2. Lei Zhu & Shuang Zhong & Wei Tu & Jing Zheng & Shenjing He & Junzhe Bao & Cunrui Huang, 2019. "Assessing Spatial Accessibility to Medical Resources at the Community Level in Shenzhen, China," IJERPH, MDPI, vol. 16(2), pages 1-15, January.
    3. Tiznado-Aitken, Ignacio & Muñoz, Juan Carlos & Hurtubia, Ricardo, 2021. "Public transport accessibility accounting for level of service and competition for urban opportunities: An equity analysis for education in Santiago de Chile," Journal of Transport Geography, Elsevier, vol. 90(C).
    4. Jieya Yang & Linoj Vijayan & Mahyar Ghorbanzadeh & Onur Alisan & Eren Erman Ozguven & Wenrui Huang & Simone Burns, 2023. "Integrating storm surge modeling and accessibility analysis for planning of special-needs hurricane shelters in Panama City, Florida," Transportation Planning and Technology, Taylor & Francis Journals, vol. 46(2), pages 241-261, February.
    5. Xiaoran Liu & Luemiao Zhang & Jiliang Zhen & Wei Wang, 2024. "Planning for service space of medium- and long-term shelters based on multi-agent evacuation simulation," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 120(14), pages 12769-12796, November.
    6. Yunjia Ma & Wei Xu & Lianjie Qin & Xiujuan Zhao, 2019. "Site Selection Models in Natural Disaster Shelters: A Review," Sustainability, MDPI, vol. 11(2), pages 1-24, January.
    7. Erica Freer, 2022. "Are resources out of reach? Analyzing the accessibility of domestic violence shelter services," Social Science Quarterly, Southwestern Social Science Association, vol. 103(3), pages 550-564, May.
    8. Li, Chuanyao & Wang, Junren, 2022. "A hierarchical two-step floating catchment area analysis for high-tier hospital accessibility in an urban agglomeration region," Journal of Transport Geography, Elsevier, vol. 102(C).
    9. Hiranya Sritart & Hiroyuki Miyazaki & Sakiko Kanbara & Takashi Hara, 2020. "Methodology and Application of Spatial Vulnerability Assessment for Evacuation Shelters in Disaster Planning," Sustainability, MDPI, vol. 12(18), pages 1-22, September.
    10. Hisao Nakai & Tomoya Itatani & Seiji Kaganoi & Aya Okamura & Ryo Horiike & Masao Yamasaki, 2021. "Needs of Children with Neurodevelopmental Disorders and Geographic Location of Emergency Shelters Suitable for Vulnerable People during a Tsunami," IJERPH, MDPI, vol. 18(4), pages 1-12, February.
    11. Siqi Tang & Jianguo Wang & Yuanhao Xu & Shengbo Chen & Jiawang Zhang & Wutao Zhao & Guojian Wang, 2023. "Evaluation of Emergency Shelter Service Functions and Optimisation Suggestions—Case Study in the Songyuan City Central Area," Sustainability, MDPI, vol. 15(9), pages 1-20, April.
    12. Dian Shao & Weiting Xiong, 2022. "Does High Spatial Density Imply High Population Density? Spatial Mechanism of Population Density Distribution Based on Population–Space Imbalance," Sustainability, MDPI, vol. 14(10), pages 1-22, May.
    13. Reza Asriandi Ekaputra & Changkye Lee & Seong-Hoon Kee & Jurng-Jae Yee, 2022. "Emergency Shelter Geospatial Location Optimization for Flood Disaster Condition: A Review," Sustainability, MDPI, vol. 14(19), pages 1-15, September.
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