云和树木遮蔽对城市人行道不同路面材料表面温度的影响
Ting Liu1, Peng Xu2, Tailong Zhang1
1School of Landscape Architecture, Zhejiang Agricultural and Forestry University, Hangzhou, 311300, China.
International journal of biometeorology
|December 16, 2024
概括
路面表面的颜色显著影响城市热岛效应. L* (轻度) 是关键;较低的轻度在阴影下更好地冷却,而荷兰提供季节性温度优势.
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 材料科学 材料科学 材料科学
背景情况:
- 路面表面的白度会影响城市热岛 (UHI) 的强度.
- 亚热带地区由于路面特性而经历了不同的UHI效应.
- 了解路面颜色和材料对表面温度的影响对于城市气候缓解至关重要.
研究的目的:
- 量化路面表面颜色和材料对表面城市热岛 (SUHI) 效应的影响.
- 分析路面白度,温度和遮阳条件之间的关系.
- 提供基于数据的路面选择建议,以减轻UHI.
主要方法:
- 在杭州调查了14个路面样本 (预制混凝土结构,花岩,荷兰).
- 测量CIELAB颜色数据,短波辐射和在无阴影,云阴影和树阴影条件下的表面温度.
- 相关联的路面光度 (L*值) 与白度和表面温度变化.
主要成果:
- 路面的轻度 (L*值) 是控制白度的主要因素,夏季和冬季呈正相关性.
- 较低的L*值导致阴影条件下更大的冷却效应.
- 树提供了最显著的冷却效益 (夏季32.2°C);荷兰显示了夏季的最低和冬季的最高表面温度.
结论:
- 路面的光度 (L*) 对于管理城市热岛效应至关重要;较低的光度可以在阴影下增强冷却.
- 荷兰是推用于气候与炎热的夏季和寒冷的冬天,因为它们的温度调节特性.
- 对于L*值较低的路面,战略性地使用遮阳措施至关重要,以有效地减轻SUHI.
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