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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
发表期刊BIOLOGY LETTERS
ISSN1744-9561
卷号10期号:8
文章类型Article
摘要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.; 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.
关键词Leaf-out Date Alpine Meadow Alpine Steppe Climate Change Plant Phenology Tibetan Plateau
WOS标题词Science & Technology ; Life Sciences & Biomedicine
关键词[WOS]DELAYED SPRING PHENOLOGY ; GREEN-UP DATES ; CLIMATE-CHANGE ; SURFACE PHENOLOGY ; LAST DECADE ; WINTER ; VEGETATION ; RESPONSES ; ECOSYSTEM ; PLANTS
收录类别SCI
语种英语
WOS研究方向Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Evolutionary Biology
WOS类目Biology ; Ecology ; Evolutionary Biology
WOS记录号WOS:000341329100002
引用统计
文献类型期刊论文
条目标识符http://210.75.249.4/handle/363003/4206
专题中国科学院西北高原生物研究所
作者单位1.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
推荐引用方式
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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