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对紧型城市发展的植被特异性冷却反应:中国南京景观分析的证据
Qianyu Sun1, Daicong Li1, Xiaolan Tang1,2
1Department of Urban and Rural Planning, Nanjing Forestry University, Nanjing 210037, China.
Plants (Basel, Switzerland)
|August 28, 2025
概括
城市植被可以降温城市,但它的有效性取决于类型和城市密度. 密集的树木在紧密的区域效果较差,而分散的树木提供稳定的冷却,突出植物结构的重要性.
科学领域:
- 城市生态
- 环境科学
- 适应气候变化
背景情况:
- 城市热岛效应 (UHI) 给城市带来了生态挑战.
- 城市植被对于缓解极端城市温度至关重要.
- 植被的冷却性能受其类型和周围城市结构的影响.
研究的目的:
- 通过混合用途和密集发展指数 (MIXD) 衡量紧的城市发展如何影响不同类型的植被的冷却性能.
- 了解中国南京的城市形态,植被结构和UHI缓解之间的关系.
主要方法:
- 使用景观指标来量化城市发展.
- 使用基于回归的交互模型来分析冷却反应.
- 应用XGBoost和SHAP分析以确定植被特异性和结构敏感的冷却效应.
主要成果:
- 密集种植的树木减少了紧的城市区域的冷却,加剧了UHI的影响,尤其是在夜间.
- 散落的树木在不同的城市密度中保持着一致的冷却.
- 低的植物具有有限的热调节能力.
- 确定了关键的MIXD值 (约. 标志着非线性绿色空间的性能.
结论:
- 植被结构和空间配置对城市微气候产生重大影响.
- 城市规划必须考虑植被类型和安排,以便在密集的环境中有效地减轻UHI.
- 研究结果提供了关于城市密度增加的植物与环境相互作用的机制性见解.
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