蓝绿空间对城市热岛的调节效应OA

[Objective]This study aimed to investigate the mechanisms by which blue-green spaces mitigate the urban heat island effect in Taiyuan,thereby providing a theoretical basis for thermal environment regulation and ecological planning in northern valley-type cities.[Method]Meteorological data from the city center,Taiyuan Forest Park,and Fenhe Park were obtained through the Shanxi Taiyuan Urban Ecosystem Research Station.One-way analysis of variance and correlation analysis were used to compare air temperature differences among different site conditions and to explore the mechanisms by which wetlands and forests regulate air temperature.[Result]1)From June to August 2023,the mean air temperature in the city center was 26.24℃,higher than those in Taiyuan Forest Park(24.79℃)and Fenhe Park(23.70℃).2)Nighttime air temperature in the city center(21.68℃)was consistently higher than those in Taiyuan Forest Park(19.34℃)and Fenhe Park(17.39℃).3)Wetlands effectively mitigated urban heat islands through the high heat capacity of water bodies,which enables heat storage and temperature buffering,and through evaporative cooling,which consumes latent heat.4)Forest vegetation reduced air temperature by absorbing solar radiation through the canopy,increasing relative humidity beneath the canopy,and slowing air movement within the forest understory.[Conclusion]Different types of blue-green spaces showed significant differences in their thermal regulation effects.Wetlands exhibited the strongest cooling capacity,followed by forests,whereas the city center showed the most pronounced urban heat island intensity.Future studies should further quantify the relationships among vegetation configuration,water body morphology,and thermal environmental responses to improve the scientific basis and practical applicability of climate-adaptive urban planning.