The Negative Influence of Urban Underground Space Development on Urban Microclimate

Xiaoling Cheng, Xudong Zhao (), Qiaoyi He and Xiaochao Su ()
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Xiaoling Cheng: Department of Art and Design, Zhengzhou College of Finance and Economics, Zhengzhou 450044, China
Xudong Zhao: College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China
Qiaoyi He: Department of Environmental Design, School of Art and Archeology, Zhejiang University City College, Hangzhou 310015, China
Xiaochao Su: Henan Civil Air Defense Protection System Technology and Support Center, Zhengzhou 450018, China

Sustainability, 2022, vol. 14, issue 16, 1-17

Abstract: The development of urban underground space can increase the green area of a city and have a positive impact on urban microclimate. However, the negative impacts of urban under-ground space development on the urban microclimate are rarely considered and analyzed. In this study, we focus on analyzing the impact of the development of underground commercial streets under determinant urban form on urban microclimate using outdoor CO concentrations as the evaluation index. In this regard, it was possible to quantitatively evaluate the influences of various development factors (e.g., development intensity of underground commercial streets; location and height of shaft exhaust; and various ground-greening configurations of transverse and vertical trees, large and small shrubs, and grasses) on the outdoor CO concentration. The results showed that higher development intensity increases outdoor CO concentration and its range of effects. Properly increasing the height of shaft exhausts, choosing a dispersed layout for shaft exhausts, and planting large shrubs on the ground in the development area of underground commercial streets can effectively reduce the impact of underground commercial street development on urban air quality.

Keywords: underground space; urban form; ENVI-met; shaft exhaust; environment (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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