The role of park size on ecosystem services in urban environment: a review

Urban parks play an important role in urban ecosystems with multifunctional services. Park size is one of the important attributes to explain the potential capacity of urban parks. In recent years, the number of studies that focus on the relationship between park size and ecosystem services in the context of ecosystem services has been increasing. This study aims to focus on investigating the relationship between ecosystem services and urban park size. The Web of Science online databases were searched using the keywords "green space", "size" and "urban" as well as related terms. A total of 129 papers meeting the inclusion criteria were examined within the scope of the research aims. The results obtained from the systematic search were summarized and presented in the three categories with sub-categories: (i) cultural services with sub-categories of physical activity (n = 42) and housing prices (n = 10), (ii) supporting services with sub-categories of fauna (n = 44), and flora (n = 3) and (iii) regulating services with sub-categories of microclimate (n = 25) and air quality (n = 5). The results indicated that park size influences a wide range of services by providing more spaces for physical activities, increasing housing prices, creating habitats for birds, insects, and bats, and effects on their richness, diversity and density, increasing the cooling effect capacity and reducing air pollution of urban parks. In conclusion, a comprehensive approach is needed, recognizing the potential of both large and small green spaces to optimize ecosystem services delivery, promote resilience, and enhance urban well-being. This includes considering supply and demand aspects and improving measurement methods. Furthermore, exploring optimal improvements across diverse park sizes remains a promising avenue for research, contributing to the development of more efficient urban green spaces.