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基于微气候模拟的武汉居住小区植被降温通风效应研究
章莉,詹庆明*,蓝玉良
0
()
摘要:
基于武汉市典型居住小区建筑布局,以8种代表乔木建模,借助微气候模型,模拟分析夏季8种植物在3种不同植被布局中的降温通风效果;研究中以植物间高宽比(Aspect Ratio of Trees, ART)量化描述植被布局。结果显示:乔木布局、植物物理属性(叶面积指数、冠幅和树高)均会影响绿地降温通风效果;当乔木以ART<2布局时,小区绿地能有效降低居住小区内平均温度,显著提升户外热舒适度;当乔木以ART≥2时,居住小区中乔木对风速的阻挡最小;叶面积指数大、树冠大的高大乔木,有较强的温度调节能力,能积极改善户外热舒适度。
关键词:  风景园林  居住小区  植被布局  树种  微气候模拟  降温通风效应
DOI:
基金项目:
The Cooling and Ventilation Effects of Residential Vegetation in Wuhan Based on Micro-climate Simulation
ZHANG Li,ZHAN Qingming,LAN Yuliang
()
Abstract:
This study examined the vegetation influences on residential environment in hot season by using model simulation. The simulation was based on typical morphology of residential districts representing current development of residential area in Wuhan. 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. The results showed that the impact of vegetation on both heat environment and ventilation depended on tree arrangement, LAI, crown width and tree height. Tree distribution with ART < 2 had great effects on cooling temperature in summer. Tree arrangement with ART ≥2 had the smallest resistance to wind flow. It proposes to optimize tree species with large LAI and big crown for effectively mitigating heat stress in summer.
Key words:  landscape architecture  residential district  tree distribution  vegetation species  micro-climate simulation  cooling and ventilation effect

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