Meteorological control on CO2 flux above broad-leaved Korean pine mixed forest in Changbai Mountains

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	Meteorological control on CO2 flux above broad-leaved Korean pine mixed forest in Changbai Mountains
	Guan, DX ; Wu, JB ; Yu, GR ; Sun, XM ; Zhao, XS ; Han, SJ ; Jin, CJ
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2005
卷号	48 页码:116-122
关键词	CO2 flux soil temperature PAR broad-leaved Korean pine mixed forest
ISSN号	1006-9313
通讯作者	Guan, DX, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China
中文摘要	The impacts of temperature, photosynthetic active radiation (PAR) and vapor pressure deficit (VPD) on CO2 flux above broad-leaved Korean pine mixed forest in the Changbai Mountains were studied based on eddy covariance and meteorological factors measurements. The results showed that, daytime CO2 flux was mainly controlled by PAR and they fit Michaelis-Menten equation. Meanwhile VPD also had an influence on the daytime flux. Drier air reduced the CO2 assimilation of the ecosystem, the drier the air, the more the reduction of the assimilation. And the forest was more sensitive to VPD in June than that in July and August. The respiration of the ecosystem was mainly controlled by soil temperature and they fit exponential equation. It was found that this relationship was also correlated with seasons; respiration from April to July was higher than that from August to November under the same temperature. Daily net carbon exchange of the ecosystem and the daily mean air temperature fit exponential equation. It was also found that seasonal trend of net carbon exchange was the result of comprehensive impacts of temperature and PAR and so on. These resulted in the biggest CO2 uptake in June and those in July and August were next. Annual carbon uptake of the forest ecosystem in 2003 was -184 gC . m(-2).
学科主题	Geosciences, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000229942300011
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/55121]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
推荐引用方式 GB/T 7714	Guan, DX,Wu, JB,Yu, GR,et al. Meteorological control on CO2 flux above broad-leaved Korean pine mixed forest in Changbai Mountains[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2005,48:116-122.
APA	Guan, DX.,Wu, JB.,Yu, GR.,Sun, XM.,Zhao, XS.,...&Jin, CJ.(2005).Meteorological control on CO2 flux above broad-leaved Korean pine mixed forest in Changbai Mountains.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,48,116-122.
MLA	Guan, DX,et al."Meteorological control on CO2 flux above broad-leaved Korean pine mixed forest in Changbai Mountains".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 48(2005):116-122.