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Detecting the Cool Island Effect of Urban Parks in Wuhan: A City on Rivers

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  • Qijiao Xie

    (Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China
    Key Laboratory of Regional Development and Environmental Response, Wuhan 430062, China)

  • Jing Li

    (Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China)

Abstract

As a nature-based solution, development of urban blue-green spaces is widely accepted for mitigating the urban heat island (UHI) effect. It is of great significance to determine the main driving factors of the park cool island (PCI) effect for optimizing park layout and achieving a maximum cooling benefit of urban parks. However, there have been obviously controversial conclusions in previous studies due to varied case contexts. This study was conducted in Wuhan, a city with high water coverage, which has significant differences in context with the previous case cities. The PCI intensity and its correlation with park characteristics were investigated based on remote sensing data. The results indicated that 36 out of 40 urban parks expressed a PCI effect, with a PCI intensity of 0.08~7.29 °C. As expected, larger parks with enough width had stronger PCI intensity. An increased density of hardened elements in a park could significantly weaken PCI effect. Noticeably, in this study, water bodies in a park contributed the most to the PCI effect of urban parks, while the vegetated areas showed a negative impact on the PCI intensity. It implied that in a context with higher water coverage, the cooling effect of vegetation was weakened or even masked by water bodies, due to the interaction effect of different variables on PCI intensity.

Suggested Citation

  • Qijiao Xie & Jing Li, 2020. "Detecting the Cool Island Effect of Urban Parks in Wuhan: A City on Rivers," IJERPH, MDPI, vol. 18(1), pages 1-15, December.
    • Handle: RePEc:gam:jijerp:v:18:y:2020:i:1:p:132-:d:468988
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    References listed on IDEAS

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    1. Taleghani, Mohammad, 2018. "Outdoor thermal comfort by different heat mitigation strategies- A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 81(P2), pages 2011-2018.
    2. Xinjun Wang & Haoming Cheng & Juan Xi & Guoying Yang & Yanwen Zhao, 2018. "Relationship between Park Composition, Vegetation Characteristics and Cool Island Effect," Sustainability, MDPI, vol. 10(3), pages 1-14, February.
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    Cited by:

    1. Xiaoyu Cai & Jun Yang & Yuqing Zhang & Xiangming Xiao & Jianhong (Cecilia) Xia, 2023. "Cooling island effect in urban parks from the perspective of internal park landscape," Palgrave Communications, Palgrave Macmillan, vol. 10(1), pages 1-12, December.

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