“…The private green spaces refer to the outdoor amenities within private urban residence whose accessibility is restricted unless permitted by the household owners. Conversely, the public green spaces (PGSs) represent those that can be accessed freely and treated as public goods (de la Barrera, Reyes-Paecke, & Banzhaf, 2015). The PGSs in urban cities include the natural places dominated by green vegetation (e.g., forests, woods, gardens, and parks) and the artificial green spaces (e.g., roadside greenbelts, riverside greenbelts, green spaces around residence, green spaces around institution, squares and plazas) (Chen, Liu, & Liu, 2016;Shan, 2014;de la Barrera et al, 2015).…”