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评估不同表面覆盖的树木的垂直冷却性能
1Centre for Climate-Resilient and Low-Carbon Cities, School of Architecture and Urban Planning, Key Laboratory of New Technology for Construction of Cities in Mountain Area, Ministry of Education, Chongqing University, Chongqing, 400045, China; Institute for Smart City of Chongqing University in Liyang, Chongqing University, Liyang, 213300, Jiangsu, China.
Journal of thermal biology
|December 30, 2023
概括
树木组合显著影响城市冷却. 树加草 (ComA) 提供了比树加灌木 (ComB) 更大的冷却,显著的垂直温度变化影响了热舒适度.
科学领域:
- 城市气候学 城市气候学
- 环境科学环境科学
- 园艺工程 园艺工程
背景情况:
- 树木诱导的冷却对于城市减热至关重要,但其垂直性能和对组合因素的敏感性未得到充分研究.
- 大多数研究都集中在1.5米的冷却,忽视了树下垂直温度梯度.
研究的目的:
- 为了研究不同树木和表面覆盖组合的垂直冷却性能.
- 分析结合植被和表面类型对树下微气候的影响.
主要方法:
- 在中国重庆进行了实地实验,测量了多个高度 (0.5-2.5米) 的垂直空气温度和风速.
- 两个组合,树 + 草 (ComA) 和树 + 灌木 (ComB),与硬路面控制 (REF) 相比较.
主要成果:
- 在33°C的环境温度下,ComA提供了2.46°C的最大冷却,而ComB提供了1.78°C.
- 观察到显著的垂直温度差异:Coma显示1.01°C (H1.5m-H2.0m),而Comb显示1.64°C (H2.5m-H2.0m).
- 随着环境温度的增加,ComA和ComB之间的冷却效应差异减少.
结论:
- 不同的树木和表面覆盖的组合创造了不同的树下垂直温度模式.
- 了解这些模式对于准确的热舒适度评估和优化城市绿色空间设计至关重要.
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