Response of Ecosystem Respiration to Experimental Warming and Clipping at Daily Time Scale in an Alpine Meadow of Tibet

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2013 > Vol10 No.3

	Response of Ecosystem Respiration to Experimental Warming and Clipping at Daily Time Scale in an Alpine Meadow of Tibet
	FU Gang ; SHEN Zhen-xi ; ZHANG Xian-zhou ; YU Cheng-qun ; ZHOU Yu-ting ; LI Yun-long ; YANG Peng-wan
刊名	Journal of Mountain Science
	2013-06
卷号	10 期号:3 页码:455-463
关键词	Acclimation Air temperature Open top chamber Temperature sensitivity Respiration quotient (Q10)
通讯作者	ZHANG Xian-zhou
英文摘要	The alpine meadow, as one of the typical vegetation types on the Tibetan Plateau, is one of the most sensitive terrestrial ecosystems to climate warming. However, how climate warming affects the carbon cycling of the alpine meadow on the Tibetan Plateau is not very clear. A field experiment under controlled experimental warming and clipping conditions was conducted in an alpine meadow on the Northern Tibetan Plateau since July 2008. Open top chambers (OTCs) were used to simulate climate warming. The main objective of this study was to examine the responses of ecosystem respiration (R_eco) and its temperature sensitivity to experimental warming and clipping at daily time scale. Therefore, we measured R_eco once or twice a month from July to September in 2010, from June to September in 2011 and from August to September in 2012. Air temperature dominated daily variation of Reco whether or not experimental warming and clipping were present. Air temperature was exponentially correlated with R_eco and it could significantly explain 58~96% variation of R_eco at daily time scale. Experimental warming and clipping decreased daily mean R_eco by 5.8~37.7% and -11.9~23.0%, respectively, although not all these changes were significant. Experimental warming tended to decrease the temperature sensitivity of R_eco, whereas clipping tended to increase the temperature sensitivity of R_eco at daily time scale. Our findings suggest that R_eco was mainly controlled by air temperature and may acclimate to climate warming due to its lower temperature sensitivity under experimental warming at daily time scale.
收录类别	SCI
语种	英语
公开日期	2013-06-14
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/5398]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2013_Vol10 No.3
推荐引用方式 GB/T 7714	FU Gang,SHEN Zhen-xi,ZHANG Xian-zhou,et al. Response of Ecosystem Respiration to Experimental Warming and Clipping at Daily Time Scale in an Alpine Meadow of Tibet[J]. Journal of Mountain Science,2013,10(3):455-463.
APA	FU Gang.,SHEN Zhen-xi.,ZHANG Xian-zhou.,YU Cheng-qun.,ZHOU Yu-ting.,...&YANG Peng-wan.(2013).Response of Ecosystem Respiration to Experimental Warming and Clipping at Daily Time Scale in an Alpine Meadow of Tibet.Journal of Mountain Science,10(3),455-463.
MLA	FU Gang,et al."Response of Ecosystem Respiration to Experimental Warming and Clipping at Daily Time Scale in an Alpine Meadow of Tibet".Journal of Mountain Science 10.3(2013):455-463.