Vertical greenery system (VGS) is a sustainable solution to promote building energy saving and emission reduction, mitigate the urban heat island effect, as well as a crucial component of urban ecological construction. We summarized four main mechanisms of the thermal effects of VGSs, including shading effect, evapotranspiration effect, thermal insulation effect, and wind control effect. We elucidated the effects of VGSs on building cooling and energy saving, and analyzed the cooling effects of VGSs on plant canopy and outdoor ambient air, as well as their influence on mitigating the urban heat island effect. Based on available research on the thermal effects of VGSs, we identified key directions for future research, aiming to expedite the development of green cities and achieve carbon neutrality.
垂直绿化系统是促进建筑节能减排和缓解城市热岛效应的可持续方案,也是实现城市生态建设的重要途径之一。本文系统归纳了垂直绿化系统热效应的4个主要的影响机理,即遮阳作用、蒸散作用、隔热作用和控风作用,阐明垂直绿化对建筑降温节能的影响,并分析垂直绿化对植物冠层和周围空气的降温效应以及对缓解热岛效应的影响。最后,基于已有的垂直绿化热效应研究,提出未来垂直绿化研究的重点方向,旨在加快绿色城市建设的进程和实现碳中和目标。.
Keywords: building energy saving; cooling effect; influence mechanism; thermal environment; vertical greenery system.