Experimental study on soil CO2 emission in the alpine grassland ecosystem on Tibetan Plateau

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	Experimental study on soil CO2 emission in the alpine grassland ecosystem on Tibetan Plateau
	Shi, PL
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2005
卷号	48 期号:Suppl. 1 页码:218-224
关键词	soil CO2 emission alpine grassland ecosystem Tibetan Plateau
ISSN号	1006-9313
通讯作者	Zhang XZ
学科主题	Geosciences, Multidisciplinary
收录类别	SCI
语种	英语
公开日期	2011-06-10
附注	The Tibetan Plateau, the Roof of the World, is the highest plateau with a mean elevation of 4000 m. It is characterized by high levels of solar radiation, low air temperature and low air pressure compared to other regions around the world. The alpine grassland, a typical ecosystem in the Tibetan Plateau, is distributed across regions over the elevation of 4500 m. Few studies for carbon flux in alpine grassland on the Tibetan Plateau were conducted due to rigorous natural conditions. A study of soil respiration under alpine grassland ecosystem on the Tibetan Plateau from October 1999 to October 2001 was conducted at Pangkog County, Tibetan Plateau (31.23 degrees N, 90-01 degrees E, elevation 4800 m). The measurements were taken using a static closed chamber technique, usually every two weeks during the summer and at other times at monthly intervals. The obvious diurnal variation of CO2 emissions from soil with higher emission during daytime and lower emission during nighttime was discovered. Diurnal CO2 flux fluctuated from minimum at 05:00 to maximum at 14:00 in local time. Seasonal CO2 fluxes increased in summer and decreased in winter, representing a great variation of seasonal soil respiration. The mean Soil CO2 fluxes in the alpine grassland ecosystem were 21.39 MgCO2 center dot m(-2) center dot h(-1), with an average annual amount of soil respiration of 187.46 gCO(2) center dot m(-2) center dot h(-1), Net ecosystem productivity is also estimated, which indicated that the alpine grassland ecosystem is a carbon sink.
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/4309]
专题	地理科学与资源研究所_专家文献库
推荐引用方式 GB/T 7714	Shi, PL. Experimental study on soil CO2 emission in the alpine grassland ecosystem on Tibetan Plateau[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2005,48(Suppl. 1):218-224.
APA	Shi, PL.(2005).Experimental study on soil CO2 emission in the alpine grassland ecosystem on Tibetan Plateau.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,48(Suppl. 1),218-224.
MLA	Shi, PL."Experimental study on soil CO2 emission in the alpine grassland ecosystem on Tibetan Plateau".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 48.Suppl. 1(2005):218-224.