The Role of Urban Green Spaces in Mitigating the Urban Heat Island Effect: A Systematic Review from the Perspective of Types and Mechanisms
Haoqiu Lin, Xun Li
Sustainability
Urban Farm DB summary
This systematic review synthesizes peer-reviewed literature on various forms of green infrastructure and their mechanisms for mitigating Urban Heat Island (UHI) effects, and the function of urban green spaces (UGS) in reducing the impact of UHI. Important mechanisms, including shade, evapotranspiration, albedo change, and ventilation, were investigated in connection with urban parks, green roofs, street trees, vertical greenery systems, and community gardens. The findings show that green areas, including parks, green roofs, and street trees, can lower air and surface temperatures by as much as 5 °C. However, the efficiency of cooling varies depending on plant density and spatial distribution.