Abstract:With the acceleration of global climate change and urbanization, urban green space design should be precisely adapted to complex environmental conditions. However, traditional plant configuration is largely experience-based and lacks systematic consideration of the interplay between environmental factors and plant adaptability. Taking three typical green spaces in Macao—urban parks, roadside greenery, and courtyard greening—as case studies, this research employs fluid dynamics technology to simulate microclimates, analyze solar radiation and wind environment characteristics, and construct a quantitative assessment framework based on microclimate zoning. The findings reveal that in high-density built-up areas, buildings significantly influence microclimates. Taipa Central Park is predominantly characterized by 'moderate sunlight + strong winds', with a majority of 'sun-loving + windresistant' plants; Avenida de Horta e Costa-Rua de Francisco Xavier Pereira is mainly defined by 'moderate sunlight + strong winds' and 'insufficient sunlight + light breezes', with no shade-tolerant or non-wind-resistant species; while the open spaces of City University of Macao are primarily 'moderate sunlight + light breezes', with no shade-tolerant species. Given the evident mismatch between current plant configurations and site conditions, this study proposes optimization recommendations for plant configuration by integrating microclimate zoning with the principle of matching species to site conditions.