Assessing the Heat Vulnerability of Different Local Climate Zones in the Old Areas of a Chinese Megacity

Zhi Cai, Yan Tang, Kai Chen and Guifeng Han
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Zhi Cai: School of Architecture, Tsinghua University, Beijing 100084, China
Yan Tang: School of Architecture, Tsinghua University, Beijing 100084, China
Kai Chen: CAUPD Beijing Planning & Design Consultants Co., China Academy of Urban Planning and Design, Beijing 100044, China
Guifeng Han: College of Architecture and Urban Planning, Chongqing University, Chongqing 400045, China

Sustainability, 2019, vol. 11, issue 7, 1-15

Abstract: Frequent and extreme heat waves have strongly influenced the sustainable development of cities and resulted in a higher level of mortality in residents. Using the Local Climate Zone (LCZ) classification scheme, combined with the factors of land surface temperature (LST), building age (BA), and housing price (HP), and the normalized values of which represent heat exposure, sensitivity, and adaptability, respectively, this paper investigates a practical method for assessing the heat vulnerability of different LCZ classes in the old areas of a Chinese megacity, taking the Yuzhong district of Chongqing city as a case study. The results reveal that the distribution of LCZ classes in this study area exhibits a typical circle-layer distribution pattern from the city center to the suburbs. Heavy industry areas are the most vulnerable, with the highest exposure to heat waves, the oldest building age and the lowest housing price. Compact class areas (compact high-rise, compact mid-rise and compact low-rise) are usually more vulnerable than open class areas (open high-rise, open mid-rise, and open low-rise) and low-rise buildings are always more susceptible to heat waves than mid-rise and high-rise buildings. The methods and findings can help us to better understand the comprehensive and space–time action rules of heat vulnerability, thereby inspiring scientific and rational urban planning strategies to mitigate or adapt to urban heat weaves towards the sustainable development of cities and society.

Keywords: heat vulnerability; old areas; local climate zone; assessment; urban spatial form (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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