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Analyzing the Spatial Heterogeneity of the Built Environment and Its Impact on the Urban Thermal Environment—Case Study of Downtown Shanghai

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  • Jiejie Han

    (Laboratory for Applied Earth Observation and Spatial Analysis, Department of Environmental Science and Engineering, Jiangwan Campus, Fudan University, Shanghai 200438, China
    Guangzhou Urban Planning & Design Survey Research Institute, Guangzhou 510030, China)

  • Xi Zhao

    (Laboratory for Applied Earth Observation and Spatial Analysis, Department of Environmental Science and Engineering, Jiangwan Campus, Fudan University, Shanghai 200438, China)

  • Hao Zhang

    (Laboratory for Applied Earth Observation and Spatial Analysis, Department of Environmental Science and Engineering, Jiangwan Campus, Fudan University, Shanghai 200438, China)

  • Yu Liu

    (Laboratory for Applied Earth Observation and Spatial Analysis, Department of Environmental Science and Engineering, Jiangwan Campus, Fudan University, Shanghai 200438, China
    School of Civil Engineering and Architecture, Henan University, Kaifeng 475003, China)

Abstract

Ongoing urban expansion has accelerated the explosive growth of urban populations and has led to a dramatic increase in the impervious surface area within urban areas. This, in turn, has exacerbated the surface heat island effect within cities. However, the importance of the surface heat island effect within urban areas, scilicet the intra-SUHI effect, has attracted less concern. The aim of this study was to quantitatively explore the relationship between the spatial heterogeneity of a built environment and the intra-urban surface heat island (intra-SUHI) effect using the thermally sharpened land surface temperature (LST) and high-resolution land-use classification products. The results show that at the land parcel scale, the parcel-based relative intensity of intra-SUHI should be attributed to the land parcels featured with differential land developmental intensity. Furthermore, the partial least squares regression (PLSR) modeling quantified the relative importance of the spatial heterogeneity indices of the built environment that exhibit a negative contribution to decreasing the parcel-based intra-SUHI effect or a positive contribution to increasing the intra-SUHI effect. Finally, based on the findings of this study, some practical countermeasures towards mitigating the adverse intra-SUHI effect and improving urban climatic adaption are discussed.

Suggested Citation

  • Jiejie Han & Xi Zhao & Hao Zhang & Yu Liu, 2021. "Analyzing the Spatial Heterogeneity of the Built Environment and Its Impact on the Urban Thermal Environment—Case Study of Downtown Shanghai," Sustainability, MDPI, vol. 13(20), pages 1-17, October.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:20:p:11302-:d:655225
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    References listed on IDEAS

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    1. Yan-jun Guo & Jie-jie Han & Xi Zhao & Xiao-yan Dai & Hao Zhang, 2020. "Understanding the Role of Optimized Land Use/Land Cover Components in Mitigating Summertime Intra-Surface Urban Heat Island Effect: A Study on Downtown Shanghai, China," Energies, MDPI, vol. 13(7), pages 1-17, April.
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    Cited by:

    1. Jiangxi Chen & Siyu Shao & Yifei Zhu & Yu Wang & Fujie Rao & Xilei Dai & Dayi Lai, 2022. "Enhanced Automatic Identification of Urban Community Green Space Based on Semantic Segmentation," Land, MDPI, vol. 11(6), pages 1-21, June.
    2. Zhenru Guan & Hao Zhang, 2024. "A Quantitative Analysis of the Complex Response Relationship between Urban Green Infrastructure (UGI) Structure/Spatial Pattern and Urban Thermal Environment in Shanghai," Sustainability, MDPI, vol. 16(16), pages 1-19, August.

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