| 摘要: |
| 以郑州市绿荫公园为研究对象，采用正交试验法设
计试验方案，借助ENVI-met进行多因素量变模拟，探究乔
木覆盖率及形态特征对公园夏季微气候舒适性的调节作用。
得出以下结论。1)乔木覆盖率与热湿环境关联度大，树干高
与风环境关联度大。2)各因素对公园微气候影响有时段性差
异。3个乔木形态特征参数中，冠幅贡献率始终最大，中午时
段高达22.5%；树干高在早上时段贡献率相对较高；叶面积
指数的贡献率时段差异最小，中午时段略高；乔木覆盖率的
贡献率各时段均大于3个乔木形态特征参数之和。3)乔木覆
盖率85%、树干高4m、叶面积指数3.9、冠幅7m的组合方
式夏季热舒适度最佳。建议城市公园在保证乔木覆盖面积的
基础上，结合空间功能的时段性需求，合理选择乔木树种，
有效发挥乔木对公园微气候的积极作用。 |
| 关键词: 风景园林 乔木覆盖率 乔木形态特征 热舒
适 优化配置 正交试验 数值模拟 |
| DOI： |
|
| 基金项目: |
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| The Regulating Effect of Arbor Coverage andMorphological Characteristics on SummerMicroclimate Comfort in Parks—Taking ZhengzhouLüyin Park as an Example |
| WANG Kun,WANG Jingxian,TIAN Chaoyang,XUE Sihan |
| Abstract: |
| With Zhengzhou Lüyin Park as the research object, the
orthogonal experiment method was used to design the experimental
plan, and the multi-factor quantitative simulation was carried
out with the help of ENVI-met to explore the regulating effect of
arbor coverage and morphological characteristics on the park's
microclimate comfort in summer. The results show: 1) The arbor
coverage rate has a great correlation with the heat and humidity
environment, and the trunk height has a great correlation with the
wind environment. 2) The influence of various factors on the park's
microclimate varies over time. Among the three tree morphological
characteristic parameters, the crown contribution rate is always the
largest, reaching as high as 22.5% at noon; trunk height contributes
relatively more in the morning hours; the contribution rate of leaf
area index has the smallest difference in the period of time, and is
slightly higher in the noon period; and the contribution rate of tree
coverage in each period is greater than the sum of the three tree
morphological characteristic parameters. 3) The combination of tree
coverage rate of 85%, trunk height of 4m, leaf area index of 3.9,
and crown width of 7m has the best thermal comfort in summer. It
is suggested that urban parks should reasonably select arbor species
on the basis of ensuring the coverage area of arbor, combined with
the time-period demand of space function, and effectively play the
positive role of arbor on the park's microclimate. |
| Key words: landscape architecture tree coverage tree morphological
characteristics thermal comfort optimal configuration orthogonal
test numerical simulation |
