Study of the Cooling Effects of Urban Green Space in Harbin in Terms of Reducing the Heat Island Effect

Meng Huang, Peng Cui and Xin He
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Meng Huang: School of Architecture, Harbin Institute of Technology, Heilongjiang Cold Region Architectural Science Key Laboratory, No. 66 Xidazhi Street, Nangang District, Harbin 15001, China
Peng Cui: School of Architecture, Harbin Institute of Technology, Heilongjiang Cold Region Architectural Science Key Laboratory, No. 66 Xidazhi Street, Nangang District, Harbin 15001, China
Xin He: School of Architecture, Harbin Institute of Technology, Heilongjiang Cold Region Architectural Science Key Laboratory, No. 66 Xidazhi Street, Nangang District, Harbin 15001, China

Sustainability, 2018, vol. 10, issue 4, 1-17

Abstract: The urban heat island (UHI) effect might cause extreme weather, which would seriously affect people’s health, increase energy consumption and cause other negative impacts. To construct urban green spaces is a feasible strategy to effectively weaken the UHI effect. In this study, the cooling effect of green spaces on the UHI effect was carefully investigated in summer and winter in Harbin city. Specifically, the vegetation index and surface temperature information were extracted by the grid method, and based on this data, the relationship between the urban green space and the UHI effect was analyzed quantitatively. In summer, the cooling effect is more significant. The average cooling extent reached 1.65 °C, the average maximum temperature change was 7.5 °C, and the cooling range was mainly 120 m. The cooling effect can be improved by adjusting the green space area, perimeter and shape. Increasing the green area (within 37 ha) or the green circumference (within 5300 m) can most economically improve its cooling effect. The shape factor would significantly affect the cooling effect within 0.03. The simpler the green space shape, the more obvious the cooling effect. In contrast, in winter the green spaces had a certain cooling effect when there was no snow cover or little snow cover, although this was still less significant compared with the situation in summer. The average cooling extent reached 0.48 °C, the average maximum temperature change was 4.25 °C, and the cooling range was mainly 90 m. However, there is no correlation between urban green space and the UHI effect in areas mainly covered by ice and snow. This work could provide protocols for urban green space design to effectively control the UHI effect of sub-frigid cities.

Keywords: urban heat island pattern; urban green space; cooling effect; Harbin City (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (16)

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