探索地理邻近对城市热环境及其边界影响的影响
Guiquan Sun1, Huasong Luo1, Yang Wang1
1Faculty of Geography, Yunnan Normal University, Kunming 650500, China.
iScience
|January 1, 2026
概括
高原城市经历了附近湖泊和森林的冷却效应. 距离迪安基湖5公里以内和距离山脉6.7公里以内的城区是有效的冷却区,对于城市热岛减轻至关重要.
科学领域:
- 环境科学 环境科学
- 城市气候学 城市气候学
- 地理信息系统 地理信息系统
背景情况:
- 城市形式对城市热环境产生重大影响.
- 自然地理邻近对城市热条件的影响,尤其是在高原城市,尚未得到充分研究.
- 土地表面温度 (LST) 是城市热环境的一个关键指标.
研究的目的:
- 调查自然地理邻近性对高原城市城市城市热条件的边界影响.
- 量化城市街区距离迪安基湖 (UB-DDL) 和城市街区距离森林山区 (UB-DFMA) 对LST的影响.
- 在高原城市内确定有效的冷却区,以缓解城市热岛.
主要方法:
- 利用XGBoost模型分析影响LST的因素.
- 纳入的城市形态指标 (规范化差异建筑积累指数,建筑密度,植被覆盖) 和自然因素 (UB-DDL,UB-DFMA).
- 结合当地气候区分类与边界效应分析.
主要成果:
- 城市形式对LST变化有很大的贡献.
- 确定了UB-DDL和UB-DFMA作为影响LST的重要因素,以及城市形式.
- 在迪安基湖5公里以内和森林山区6.7公里以内的城市街区被归类为有效的冷却区.
结论:
- 自然地理接近,特别是接近迪安基湖和森林覆盖的山脉,在高原城市的LST监管中起着至关重要的作用.
- 确定了有效的冷却区,为城市规划提供了有价值的空间信息.
- 该研究提供了独特的见解,通过整合当地气候区分类和边界效应来缓解高原城市的城市热环境.
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