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Field evidence for earlier leaf-out dates in alpine grassland on the eastern Tibetan Plateau from 1990 to 2006
Zhou, H. K.1,2; Yao, B. Q.1,2; Xu, W. X.3; Ye, X.4; Fu, J. J.1; Jin, Y. X.1; Zhao, X. Q.5
2014-08-01
Source PublicationBIOLOGY LETTERS
ISSN1744-9561
Volume10Issue:8
SubtypeArticle
AbstractWorldwide, many plant species are experiencing an earlier onset of spring phenophases due to climate warming. Rapid recent temperature increases on the Tibetan Plateau (TP) have triggered changes in the spring phenology of the local vegetation. However, remote sensing studies of the land surface phenology have reached conflicting interpretations about green-up patterns observed on the TP since the mid-1990s. We investigated this issue using field phenological observations from 1990 to 2006, for 11 dominant plants on the TP at the levels of species, families (Gramineae-grasses and Cyperaceae-sedges) and vegetation communities (alpine meadow and alpine steppe). We found a significant trend of earlier leaf-out dates for one species (Koeleria cristata). The leaf-out dates of both Gramineae and Cyperaceae had advanced (the latter significantly, starting an average of 9 days later per year than the former), but the correlation between them was significant. The leaf-out dates of both vegetation communities also advanced, but the pattern was only significant in the alpine meadow. This study provides the first field evidence of advancement in spring leaf phenology on the TP and suggests that the phenology of the alpine steppe can differ from that of the alpine meadow. These findings will be useful for understanding ecosystem responses to climate change and for grassland management on the TP.; Worldwide, many plant species are experiencing an earlier onset of spring phenophases due to climate warming. Rapid recent temperature increases on the Tibetan Plateau (TP) have triggered changes in the spring phenology of the local vegetation. However, remote sensing studies of the land surface phenology have reached conflicting interpretations about green-up patterns observed on the TP since the mid-1990s. We investigated this issue using field phenological observations from 1990 to 2006, for 11 dominant plants on the TP at the levels of species, families (Gramineae-grasses and Cyperaceae-sedges) and vegetation communities (alpine meadow and alpine steppe). We found a significant trend of earlier leaf-out dates for one species (Koeleria cristata). The leaf-out dates of both Gramineae and Cyperaceae had advanced (the latter significantly, starting an average of 9 days later per year than the former), but the correlation between them was significant. The leaf-out dates of both vegetation communities also advanced, but the pattern was only significant in the alpine meadow. This study provides the first field evidence of advancement in spring leaf phenology on the TP and suggests that the phenology of the alpine steppe can differ from that of the alpine meadow. These findings will be useful for understanding ecosystem responses to climate change and for grassland management on the TP.
KeywordLeaf-out Date Alpine Meadow Alpine Steppe Climate Change Plant Phenology Tibetan Plateau
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS KeywordDELAYED SPRING PHENOLOGY ; GREEN-UP DATES ; CLIMATE-CHANGE ; SURFACE PHENOLOGY ; LAST DECADE ; WINTER ; VEGETATION ; RESPONSES ; ECOSYSTEM ; PLANTS
Indexed BySCI
Language英语
WOS Research AreaLife Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS SubjectBiology ; Ecology ; Evolutionary Biology
WOS IDWOS:000341329100002
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://210.75.249.4/handle/363003/4206
Collection中国科学院西北高原生物研究所
Affiliation1.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining 810008, Peoples R China
2.Chinese Acad Sci, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Peoples R China
3.Chinese Acad Sci, Qinghai Inst Meteorol Sci, Xining 810001, Peoples R China
4.Chinese Acad Sci, Ecoenvironm Sci Res Ctr, Beijing 100085, Peoples R China
5.Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China
Recommended Citation
GB/T 7714
Zhou, H. K.,Yao, B. Q.,Xu, W. X.,et al. Field evidence for earlier leaf-out dates in alpine grassland on the eastern Tibetan Plateau from 1990 to 2006[J]. BIOLOGY LETTERS,2014,10(8).
APA Zhou, H. K..,Yao, B. Q..,Xu, W. X..,Ye, X..,Fu, J. J..,...&Zhao, X. Q..(2014).Field evidence for earlier leaf-out dates in alpine grassland on the eastern Tibetan Plateau from 1990 to 2006.BIOLOGY LETTERS,10(8).
MLA Zhou, H. K.,et al."Field evidence for earlier leaf-out dates in alpine grassland on the eastern Tibetan Plateau from 1990 to 2006".BIOLOGY LETTERS 10.8(2014).
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