气候变化领域集成服务门户(CCPortal): Traces of urban forest in temperature and CO2 signals in monsoon East Asia

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DOI	10.5194/acp-21-17833-2021
	Traces of urban forest in temperature and CO2 signals in monsoon East Asia
	Lee K.; Hong J.-W.; Kim J.; Jo S.; Hong J.
发表日期	2021
ISSN	1680-7316
起始页码	17833
结束页码	17853
卷号	21 期号:23
英文摘要	Cities represent a key space for a sustainable society in a changing environment, and our society is steadily embracing urban green space for its role in mitigating heat waves and anthropogenic CO2 emissions. This study reports 2 years of surface fluxes of energy and CO2 in an artificially constructed urban forest measured by the eddy covariance method to examine the impact of urban forests on air temperature and net CO2 exchange. The urban forest site shows typical seasonal patterns of forest canopies with the seasonal march of the East Asian summer monsoon. This study shows that the urban forest reduces both the warming trend and urban heat island intensity compared to the adjacent high-rise urban areas and that photosynthetic carbon uptake is large despite relatively small tree density and leaf area index. During the significant drought period in the second year, gross primary production and evapotranspiration decreased, but their reduction was not as significant as those in natural forest canopies. We speculate that forest management practices, such as artificial irrigation and fertilization, enhance vegetation activity. Further analysis reveals that ecosystem respiration in urban forests is more pronounced than for typical natural forests in a similar climate zone. This can be attributed to the substantial amount of soil organic carbon due to intensive historical soil use and soil transplantation during forest construction, as well as relatively warmer temperatures in urban heat domes. Our findings suggest the need for caution in soil management when aiming to reduce CO2 emissions in urban areas. © Copyright:
语种	英语
scopus关键词	anthropogenic source; carbon dioxide; carbon emission; emission control; greenspace; heat island; heat wave; monsoon; temperature profile; urban climate; urban forestry; warming; Far East
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246387
作者单位	Department of Atmospheric Sciences, Yonsei University, Seoul, 03722, South Korea; Korea Adaptation Center for Climate Change, Korea Environment Institute, Sejong, 30147, South Korea
推荐引用方式 GB/T 7714	Lee K.,Hong J.-W.,Kim J.,et al. Traces of urban forest in temperature and CO2 signals in monsoon East Asia[J],2021,21(23).
APA	Lee K.,Hong J.-W.,Kim J.,Jo S.,&Hong J..(2021).Traces of urban forest in temperature and CO2 signals in monsoon East Asia.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(23).
MLA	Lee K.,et al."Traces of urban forest in temperature and CO2 signals in monsoon East Asia".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.23(2021).