Co-authors
Quang Cuong Doan (a), Jun Ma (a b), Shuting Chen (a), Xiaohu Zhang (a b) (a) Department of Urban Planning and Design, Faculty of Architecture, The University of Hong Kong, Hong Kong Special Administrative Region, PR China (b) Urban Systems Institute, The University of Hong Kong, Hong Kong Special Administrative Region, PR China

Research description
This study investigated the nonlinear relationships of the built environment, road vehicles, and air pollution on urban vitality. Results revealed that while the built environment features explained a significant portion (77.5 %) of the variance in urban vitality, road vehicles (such as bicycles, buses, cars, and motorbikes) and ozone concentrations accounted for 15.18 % and 1.46 %, respectively. While the built environment and road vehicles exhibit positive nonlinear relationships with urban vitality, ozone concentration demonstrated a negative threshold effect. This study advances understanding of the mechanisms and factors influencing urban vitality, offering insights into fostering a sustainable urban environment.