2.1. Multiple benefits of blue-green spaces
Urban green space and water bodies have multiple functions and can meet the diverse requirements of urban development, such as human-centered, organism-centered, and economic construction-centered functions. Among these functions, anthropocentric functions mainly include health functions, entertainment functions, etc. Organism-centered functions are mainly ecological service functions, such as habitat provision, climate control, and pollution control(Rehachova and Pauditsova, 2004). Economic construction-centered functions include increasing urban and resident wealth (Chiesura, 2004). These functions are classified into three aspects: ecological, mental health, and economic benefits.