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Quantitative Study on the Effects of Street Geometries and Tree Configurations on the Outdoor Thermal Environment

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  • Jindong Wu

    (China National Engineering Research Center for Human Settlements, China Architecture Design & Research Group, Xicheng District, Beijing 100044, China
    School of Architecture, Tsinghua University, Haidian District, Beijing 100084, China)

  • Yu Wang

    (China National Engineering Research Center for Human Settlements, China Architecture Design & Research Group, Xicheng District, Beijing 100044, China)

  • Shuhua Li

    (School of Architecture, Tsinghua University, Haidian District, Beijing 100084, China)

  • Qitao Wu

    (School of Design, Silla University, Sasang-gu, Busan 46958, Republic of Korea)

  • Taecheol Lee

    (Department of Architecture, Pusan National University, Geumjeong-gu, Busan 46241, Republic of Korea)

  • Seonghwan Yoon

    (Department of Architecture, Pusan National University, Geumjeong-gu, Busan 46241, Republic of Korea)

Abstract

Global warming and the urban heat island effect has aroused the attention of research on the outdoor thermal environment. As outdoor spaces often used by citizens, streets play an important role in improving the thermal environment. In this study, six factors relating to street geometries and tree configurations in Busan are measured and quantified to form 32 typical scenarios. The degree of importance of these six factors is evaluated based on ENVI-met simulation results, and GeoDetector is introduced to evaluate the interactions between the factors and their impacts on the outdoor thermal environment. This study confirms the significantly higher impact of street geometry factors on the air temperature and physiological equivalent temperature compared to tree configuration factors. Particularly, H b /W s shows the most significant impact during the research period. The impact of interactions between any two factors of street geometry is much higher than that of interactions between the geometry and tree configuration factors and that of interactions between the tree configuration factors. We recommend dynamically adjusting the relationship between street geometry and tree configurations in different situations to improve the outdoor thermal environment, especially at noon and in the afternoon.

Suggested Citation

  • Jindong Wu & Yu Wang & Shuhua Li & Qitao Wu & Taecheol Lee & Seonghwan Yoon, 2024. "Quantitative Study on the Effects of Street Geometries and Tree Configurations on the Outdoor Thermal Environment," Energies, MDPI, vol. 17(9), pages 1-24, May.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:9:p:2223-:d:1388735
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    References listed on IDEAS

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    1. Luc Anselin, 2010. "Thirty years of spatial econometrics," Papers in Regional Science, Wiley Blackwell, vol. 89(1), pages 3-25, March.
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