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	The cooling effect of urban green spaces as a contribution to energy-saving and emission-reduction: A case study in Beijing, China
	Zhang B.
	2014
关键词	Cooling effect Energy-saving and emission-reduction Green spaces Urban heat island Beijing thermal benefits human comfort heat-stress city parks hong-kong temperature environment model vegetation climate
英文摘要	Urban green spaces have been proven to significantly decrease ambient air temperature and mitigate heat islands created by urbanization. However, the environmental benefits of cooling provided by urban green spaces have rarely been measured. In this paper, we estimated the energy-savings and emission-reduction contribution of urban green spaces in Beijing, applying a empirical model. Our calculations suggest urban green spaces play a major role in reducing energy demand and increasing CO2 sequestration. Urbanized Beijing has 16,577 ha of green space which could absorb 3.33 x 10(12) kJ of heat via evapotranspiration during the entire summer. The cooling effect reduced the air conditioning demand by 3.09 x 10(8) kWh which amounts to a 60% reduction in net cooling energy usage in Beijing. The annual reduction in CO2 emissions from power plants associated with electricity saving would reach 243 thousand tons with an average of 61 kg/(ha day). Also, the cooling effect and the environmental benefits of urban green space in Beijing largely depend on the green space's structure and size. Urban managers and landscape planners should take advantage of this research to plan, design and manage green spaces in heat island areas. 2014 Elsevier Ltd. All rights reserved.
出处	Building and Environment
卷	76
页	37-43
收录类别	SCI
语种	英语
ISSN号	0360-1323
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/29420]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Zhang B.. The cooling effect of urban green spaces as a contribution to energy-saving and emission-reduction: A case study in Beijing, China. 2014.

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