IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Responses of alpine grassland to climate warming and permafrost thawing in two basins with different precipitation regimes on the Qinghai-Tibetan Plateau
Zhou, Zhaoye1,2; Yi, Shuhua2; Chen, Jianjun2; Ye, Baisheng2; Sheng, Yu3; Wang, Genxu4; Ding, Yongjian2
Corresponding AuthorZhou, Zhaoye
2015-02-01
Source PublicationARCTIC ANTARCTIC AND ALPINE RESEARCH
ISSN1523-0430
Volume47Issue:1Pages:125-131
SubtypeArticle
AbstractAlpine grassland and permafrost occupy about two thirds and one half of the total area of the Qinghai-Tibetan Plateau (QTP), respectively. Soil water, which can be affected by permafrost thawing and precipitation, is important for vegetation growth in this region. It is therefore vital to consider the effects of both thawing and precipitation when studying the effect of climate warming on alpine grassland on the QTP. In this study, we examined two adjacent basins, one semiarid and the other semihumid, in the northeastern section of the QTP. We used remote sensing data to compare fractional vegetation cover (FVC) and the relationships between FVC and land surface temperature (LST) in different types of frozen ground; the samples were analogous to a chronosequence of climate warming and permafrost thawing. Our analysis produced three significant results: (1) the FVCs of the semihumid basin were significantly greater than those of the semiarid basin for most types of frozen ground (p < 0.05); (2) the changes in FVC along the climate warming and permafrost thawing chronosequence were different in the two basins, with the maximum FVC occurring on the transition permafrost zone in the semiarid basin and on the seasonal frost zone in the semihumid basin; and (3) at the peak of the growing season, only the three warmest types of frozen ground in the semiarid basin had a negative relationship between FVC and LST, suggesting that vegetation growth was limited by water. Therefore, we concluded that the responses of alpine grassland to climate warming in the permafrost regions are complicated by precipitation and permafrost thawing; specifically, grasslands will not necessarily simply degrade as the climate warms, as suggested by previous plotscale studies.
KeywordCarbon Dynamics Soil-moisture Degradation Ecosystems Vegetation Tundra Model
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1657/AAAR0013-098
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Physical Geography
Indexed BySCI
WOS KeywordCARBON DYNAMICS ; SOIL-MOISTURE ; DEGRADATION ; ECOSYSTEMS ; VEGETATION ; TUNDRA ; MODEL
Language英语
WOS SubjectEnvironmental Sciences ; Geography, Physical
WOS IDWOS:000350219000011
Funding OrganizationNational Basic Research Program of China(2013CBA01807) ; Strategic Priority Research Program(XDB030303) ; China Special Fund for Meteorological Research in the Public Interest(GYHY201306017) ; National Natural Science Foundation of China(41271089)
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/9592
Collection山地表生过程与生态调控重点实验室
Affiliation1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China
2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China
3.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China
4.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Zhou, Zhaoye,Yi, Shuhua,Chen, Jianjun,et al. Responses of alpine grassland to climate warming and permafrost thawing in two basins with different precipitation regimes on the Qinghai-Tibetan Plateau[J]. ARCTIC ANTARCTIC AND ALPINE RESEARCH,2015,47(1):125-131.
APA Zhou, Zhaoye.,Yi, Shuhua.,Chen, Jianjun.,Ye, Baisheng.,Sheng, Yu.,...&Ding, Yongjian.(2015).Responses of alpine grassland to climate warming and permafrost thawing in two basins with different precipitation regimes on the Qinghai-Tibetan Plateau.ARCTIC ANTARCTIC AND ALPINE RESEARCH,47(1),125-131.
MLA Zhou, Zhaoye,et al."Responses of alpine grassland to climate warming and permafrost thawing in two basins with different precipitation regimes on the Qinghai-Tibetan Plateau".ARCTIC ANTARCTIC AND ALPINE RESEARCH 47.1(2015):125-131.
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