Department of Landscape Architecture and Rural Systems Engineering, College of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-Ro, Gwanak-Gu, Seoul, 08826, Republic of Korea.
Integrated Major in Smart City Global Convergence, Seoul National University, Seoul, Republic of Korea.
Environ Sci Pollut Res Int. 2023 Aug;30(38):88641-88663. doi: 10.1007/s11356-023-28526-5. Epub 2023 Jul 13.
This study aims to examine the impact of planting strategies on improving thermal comfort in relation to the existing buildings within real high-rise residential complexes. Using numerical simulation via ENVI-met, we compare six planting scenarios characterized by two locational schemes-open-space planting and building-vicinity planting-and three tree quantities. The results highlight the importance of planting greater numbers of trees, and also of their locations, to moderate the thermal environment. The findings of the study demonstrated that increasing the number of trees in the open space by threefold of the advisory guidelines led to a significant reduction in the average air temperature by 0.87 °C, mean radiant temperature (MRT) by 11.00 °C, physiological equivalent temperature (PET) by 4.50 °C, and wind speed by 0.30 m/s. Planting the minimum number of trees under building-vicinity reduced air temperature by 0.07 °C, MRT by 2.48 °C, and PET by 0.92 °C, while showing a slight increase in wind speed of approximately 0.01 m/s. To achieve improvements in both thermal condition and air flow, we suggest planting rows of trees parallel to the prevailing wind direction in the ventilation corridors at some distance from buildings, to minimize overlap of shade from trees and from buildings. The findings of this study will provide useful guidelines for effective planting design in dense residential areas.
本研究旨在探讨种植策略对改善与现有高层建筑内建筑物相关的热舒适度的影响。我们通过 ENVI-met 进行数值模拟，比较了六种种植方案，这些方案的特点是有两种布局方案——开放空间种植和建筑物附近种植，以及三种树木数量。结果突出了种植更多树木的重要性，以及树木位置的重要性，以调节热环境。研究结果表明，将开放空间中的树木数量增加到建议指南的三倍，可使平均空气温度降低 0.87°C，平均辐射温度（MRT）降低 11.00°C，生理等效温度（PET）降低 4.50°C，风速降低 0.30 m/s。在建筑物附近种植最少数量的树木可使空气温度降低 0.07°C，MRT 降低 2.48°C，PET 降低 0.92°C，而风速略有增加，约为 0.01 m/s。为了在热条件和空气流动方面都得到改善，我们建议在通风走廊中沿主导风向种植成排的树木，与建筑物保持一定距离，以尽量减少树木和建筑物的阴影重叠。本研究的结果将为密集住宅区的有效种植设计提供有用的指导。
