Responses of Soil CO2 Fluxes to Short-Term Experimental Warming in Alpine Steppe Ecosystem, Northern 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 > 山地表生过程与生态调控重点实验室

	Responses of Soil CO2 Fluxes to Short-Term Experimental Warming in Alpine Steppe Ecosystem, Northern Tibet
	Lu, Xuyang1,2 ; Fan, Jihui1,2 ; Yan, Yan1 ; Wang, Xiaodan1
刊名	PLOS ONE
	2013-03-11
卷号	8 期号:3 页码:1–8
关键词	CARBON-DIOXIDE TEMPERATURE-DEPENDENCE BOREAL FOREST RESPIRATION MOISTURE CHINA PLANTATION COMMUNITY DYNAMICS PATTERNS
ISSN号	1932-6203
通讯作者	Lu, XY（鲁旭阳）
英文摘要	Soil carbon dioxide (CO2) emission is one of the largest fluxes in the global carbon cycle. Therefore small changes in the size of this flux can have a large effect on atmospheric CO2 concentrations and potentially constitute a powerful positive feedback to the climate system. Soil CO2 fluxes in the alpine steppe ecosystem of Northern Tibet and their responses to short-term experimental warming were investigated during the growing season in 2011. The results showed that the total soil CO2 emission fluxes during the entire growing season were 55.82 and 104.31 g C m(-2) for the control and warming plots, respectively. Thus, the soil CO2 emission fluxes increased 86.86% with the air temperature increasing 3.74 degrees C. Moreover, the temperature sensitivity coefficient (Q(10)) of the control and warming plots were 2.10 and 1.41, respectively. The soil temperature and soil moisture could partially explain the temporal variations of soil CO2 fluxes. The relationship between the temporal variation of soil CO2 fluxes and the soil temperature can be described by exponential equation. These results suggest that warming significantly promoted soil CO2 emission in the alpine steppe ecosystem of Northern Tibet and indicate that this alpine ecosystem is very vulnerable to climate change. In addition, soil temperature and soil moisture are the key factors that controls soil organic matter decomposition and soil CO2 emission, but temperature sensitivity significantly decreases due to the rise in temperature.
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	CARBON-DIOXIDE ; TEMPERATURE-DEPENDENCE ; BOREAL FOREST ; RESPIRATION ; MOISTURE ; CHINA ; PLANTATION ; COMMUNITY ; DYNAMICS ; PATTERNS
收录类别	SCI
语种	英语
WOS记录号	WOS:000316251100115
公开日期	2013-06-24
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/5448]
专题	成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室
作者单位	1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu, Sichuan, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Wetland Ecosyst Observat & Expt Stn, Xainza, Tibet, Peoples R China
推荐引用方式 GB/T 7714	Lu, Xuyang,Fan, Jihui,Yan, Yan,et al. Responses of Soil CO2 Fluxes to Short-Term Experimental Warming in Alpine Steppe Ecosystem, Northern Tibet[J]. PLOS ONE,2013,8(3):1–8.
APA	Lu, Xuyang,Fan, Jihui,Yan, Yan,&Wang, Xiaodan.(2013).Responses of Soil CO2 Fluxes to Short-Term Experimental Warming in Alpine Steppe Ecosystem, Northern Tibet.PLOS ONE,8(3),1–8.
MLA	Lu, Xuyang,et al."Responses of Soil CO2 Fluxes to Short-Term Experimental Warming in Alpine Steppe Ecosystem, Northern Tibet".PLOS ONE 8.3(2013):1–8.