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优化城市公园的冷却效应需要平衡形态设计和景观结构
Lin Wang1,2, Wenjia Wang1,2, Fei Tang3
1Fujian Provincial Key Laboratory of Remote Sensing of Soil Erosion and Disaster Prevention, College of Environmental and Safety Engineering, Fuzhou University, Fuzhou, 350108, China.
公园冷却岛减轻城市热量. 最佳的园区大小用于冷却效应是0.59456 hm2,设计元素如植被和水体对于最大限度地提高冷却潜力至关重要.
科学领域:
- 城市气候学 城市气候学
- 景观生态学 景观生态学
- 环境科学 环境科学
背景情况:
- 随着城市化和全球变暖的加剧,极端高温事件的频率越来越高.
- 城市公园对于通过公园冷却岛 (PCI) 效应减轻热量至关重要.
- 了解公园特征与冷却效应之间的关系对于城市规划至关重要.
研究的目的:
- 分析福州50个城市公园的冷却效应.
- 调查公园面积与其冷却效应 (PCE) 之间的关系.
- 确定增强PCE的关键公园设计特征.
主要方法:
- 在50个城市公园中对冷却效应 (PCE) 的定量分析.
- 探索公园面积和PCE之间的相关性.
- 评估景观指标 (例如,不透水面,水体,植被,补丁图案,边缘密度,碎片化) 对PCE的影响.
主要成果:
- 园区面积和PCE之间没有简单的正相关性.
- 最佳的冷却效应的公园面积在0.594到56 hm2之间.
- 低无透表面,高水/植被比例和复杂的补丁图案增强了PCE,而边缘密度和碎片化削弱了它.
结论:
- 园区冷却效应受园区内部和外部条件的影响,其中内部因素更为重要.
- 优化公园设计,包括减少不透的表面和增加植被多样性,比仅仅增加公园面积更有效.
- 战略性公园设计和布局对于最大限度地减轻城市热量效益至关重要.
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