How to plan urban green space in cold regions of China to achieve the best cooling efficiency

被引:23
作者
Pang, Bo [1 ]
Zhao, Jingyuan [1 ]
Zhang, Jianxin [1 ]
Yang, Li [1 ]
机构
[1] Changan Univ, Dept Architecture, Xian 701164, Peoples R China
基金
美国国家科学基金会;
关键词
Urban heat island; Urban green space; Urban cold island; Threshold value of efficiency; Water; land ratio; Urban planning; Climate adaptation; LAND-SURFACE TEMPERATURE; HEAT-ISLAND; MITIGATION TECHNOLOGIES; LANDSCAPE; CLIMATE; PARKS; XIAN; URBANIZATION; VEGETATION; MEGACITIES;
D O I
10.1007/s11252-022-01202-1
中图分类号
X176 [生物多样性保护];
学科分类号
090705 ;
摘要
With the acceleration of urbanization, the urban heat island (UHI) effect has intensified. Urban green space can retard the UHI effect. However, most existing studies have only focused on hot regions, while little attention has been given to cold regions that also have summer heat protection requirements. Furthermore, existing researc has not classified urban green spaces according to the presence or absence of water, which can lead to inaccurate results. This paper takes four cities in cold regions of China as examples and studies the cooling effects of two different types of urban green space. The results indicate that in cold regions of China, green spaces containing water bodies have a stronger cooling effect than those without water. For green spaces without water, the cooling intensity is related to the background temperature and green space areas, while for green spaces containing water bodies, the area of the internal water body is the key influencing factor. Specifically, there is a threshold value of efficiency (TVoE) for the green space areas without water in cold region cities of China, which is approximately 0.52 ha, while there is no TVoE for the green space areas containing water bodies. Additionally, there is a TVoE for the water/land ratio of the green spaces containing water bodies of approximately 0.5. The methods and results of this study can provide a reference for future research and for urban planners and managers designing urban green spaces.
引用
收藏
页码:1181 / 1198
页数:18
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