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首页> 外文期刊>Building and Environment >Effects of the tree distribution and species on outdoor environment conditions in a hot summer and cold winter zone: A case study in Wuhan residential quarters
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Effects of the tree distribution and species on outdoor environment conditions in a hot summer and cold winter zone: A case study in Wuhan residential quarters

机译：夏热冬冷地区树木分布和种类对室外环境的影响-以武汉居住区为例。

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摘要

Residential district is the important space for people living and outdoor activities. Vegetation is proved to be effectively regulate microclimate. Living in Wuhan, residents have to suffer heat stress in summer and strong cold wind in winter simultaneously. It is necessary to dictate vegetation types and layout in residential area to get comfortable environment both in hot summer and cold winter. This study examined the vegetation influences of residential wind environment in hot and cold seasons by using the ENVI-met model V4. Field measurement validated the performance of ENVI-met model. The simulation was based on multi-story buildings representing the current primary form of residential area in Wuhan. 3 scenarios with three tree arrangements and 8 vegetation species were simulated. Height-to-distance ratio of trees (as "Aspect ratio of trees", ART) was used to describe the tree distribution. Results showed that the impact of vegetation on both heat environment and ventilation depended on tree arrangement, LAI, crown width and tree height. The comparison of 3 tree distributions revealed that trees with an ART 2 should be a priority to mitigate hot environments due to the large effects on PET reduction in summer. Evergreen species with an ART 2 also effectively decreased wind speed in winter as well as blocked direct sunlight, resulting in negative effects on PET. Tall trees with a large LAI and canopy diameter should be a priority to improve the comfort of outdoor environments.
机译：居住区是人们生活和户外活动的重要场所。事实证明，植被可以有效地调节微气候。居住在武汉的居民在夏季必须承受高温压力，而在冬季则必须承受强冷风。必须规定居住区的植被类型和布局，以在炎热的夏季和寒冷的冬季获得舒适的环境。这项研究使用ENVI-met模型V4检验了冷热季节居民风环境对植被的影响。现场测量验证了ENVI-met模型的性能。该模拟基于代表武汉当前居住区主要形式的多层建筑物。模拟了3种场景，其中有3种树的布置和8种植被。树木的高度/距离比（作为“树木的纵横比”，ART）用于描述树木的分布。结果表明，植被对热环境和通风的影响均取决于树木的排列，LAI，树冠宽度和树木高度。对3种树木分布的比较表明，由于夏季对减少PET的影响很大，ART≤2的树木应优先缓解高温环境。 ART <2的常绿树种在冬天还能有效降低风速，并阻挡直射的阳光，从而对PET产生负面影响。具有较大LAI和树冠直径的高大树木应是提高室外环境舒适度的优先事项。

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