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Technical gazette, Vol. 26 No. 1, 2019.

Original scientific paper

https://doi.org/10.17559/TV-20181108143831

Influence of the Mega-Urban Heat Island on Spatial Transfer of Summer Thermal Comfort: Evidence from Tianjin, China

Huanchun Huang orcid id orcid.org/0000-0002-3330-3732 ; College of Landscape Architecture, Nanjing Forestry University, No. 159 Lonpan Road, Nanjing, 210037, Jiangsu, P. R. China
Yingxia Yun ; School of Architecture, Tianjin University, No. 92 Weijin Road, Nankai District, 300072, Tianjin, P. R. China
Hao Xu ; College of Landscape Architecture, Nanjing Forestry University, No. 159 Lonpan Road, Nanjing, 210037, Jiangsu, P. R. China
Ting Liu orcid id orcid.org/0000-0001-5777-9172 ; Faculty of Architecture, Design and Planning, the University of Sydney, 456P+HW Camperdown, Sydney, Australia

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Abstract

Human thermal comfort in urban spaces deteriorates as rapid urbanization proceeds. However, effective tests and discoveries of spatial statistic patterns are currently absent. This study collected remote sensing images and measured meteorological data of the summers of 1992–2017, Tianjin of China and aims to clarify patterns of spatial transfer and thermal comfort changes caused by a mega-UHI (Urban Heat Island). An analytic transfer matrix and the spatial autocorrelation were developed to study spatial pattern changes and features of the spatial transfer of thermal comfort caused by UHI. Results show these patterns in the affected areas can be divided into different levels: patterns of low-level affected areas transferred by circular expansion into block-mass jumping, while the position of high-level affected areas remains stable. The spatial transfer of thermal comfort in the affected areas shows two apparent stages: the transfer from areas of high-density and low-storied buildings and into areas of multiple storied buildings, and transfer from areas of low and multiple storied buildings into those of high storied buildings. This implies changes in urban planning can guide spatial, structural, and functional evolution. The study identifies features of spatial change and spatial patterns related to the influence of Mega-UHI on thermal comfort.

Keywords

levels of affected areas; spatial autocorrelation; spatial transfer; summer UHI; thermal comfort

Hrčak ID:

217142

URI

https://hrcak.srce.hr/217142

Publication date:

16.2.2019.

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