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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
Corresponding AuthorLu, XY(鲁旭阳)
2013
Source PublicationPLOS ONE
ISSN1932-6203
Volume8Issue:3Pages:1–8
SubtypeArticle
AbstractSoil 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.
KeywordCarbon-dioxide Temperature-dependence Boreal Forest Respiration Moisture China Plantation Community Dynamics Patterns
WOS HeadingsScience & Technology
DOI10.1371/journal.pone.0059054
WOS Subject ExtendedScience & Technology - Other Topics
Indexed BySCI
WOS KeywordCARBON-DIOXIDE ; TEMPERATURE-DEPENDENCE ; BOREAL FOREST ; RESPIRATION ; MOISTURE ; CHINA ; PLANTATION ; COMMUNITY ; DYNAMICS ; PATTERNS
Language英语
Quartile2区
TOP
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000316251100115
Funding OrganizationNational Natural Science Foundation of China(41001177 ; One Hundred Young Persons Project of Institute of Mountain Hazards and Environment(SDSQB-2010-02) ; 135 Strategic Program of the Institute of Mountain Hazards and Environment(sds-135-1203-03) ; Action-plan of the Chinese Academy of Sciences (CAS) for West Development(KZCX2-XB3-08) ; 41201053)
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5448
Collection山地表生过程与生态调控重点实验室
Affiliation1.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
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
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.
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