气候变化领域集成服务门户(CCPortal): Temperature signal instability of tree-ring delta C-13 chronology in the northeastern Qinghai-Tibetan Plateau

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DOI	10.1016/j.gloplacha.2016.02.006
	Temperature signal instability of tree-ring delta C-13 chronology in the northeastern Qinghai-Tibetan Plateau
	Wang, Wenzhi; Liu, Xiaohong; Xu, Guobao; Zeng, Xiaomin; Wu, Guoju; Zhang, Xuanwen; Qin, Dahe
发表日期	2016
ISSN	0921-8181
起始页码	165
结束页码	172
卷号	139
英文摘要	Tree ring delta C-13 as a climate proxy is widely used for palaeoclimate research, however, its temporal stability response to the climate change remains unclear under more than one limited factors on tree growth. Here, we used a millennium tree-ring delta C-13 chronology combining two annual-resolution delta C-13 chronologies since 1800 from long-lived Qilian juniper (Sabina przewalskii) to assess its instability of the climate signal in the northeastern Qinghai-Tibetan Plateau. Tree-ring delta C-13 chronologies were strongly correlated with the regional mean April to August temperature from 1956 to 2008, but the associations were absent within the period 1901 to 1955 values in the CRU TS dataset. Comparison of the millennium-long delta C-13 series with reconstructed Asian temperatures also demonstrated that the delta C-13 chronology exhibited climate signal temporal instability. Substantial oscillations were revealed using a frequency-dependent analysis and 51-year running correlation analysis from the millennium-long tree-ring delta C-13 and delta O-18 series. Dual-isotope approach indicated that stomatal limitations created a statistical significant positive correlation between tree-ring delta C-13 and delta O-18, but photosynthetic rate may be dominant when the correlations were not significant. Our results suggest that tree-ring delta C-13 series in the northeastern Qinghai-Tibetan Plateau is responded instability to temperature variations in the past 1000 years. (C) 2016 Elsevier B.V. All rights reserved.
英文关键词	Tree-ring delta C-13; Temperature instability; Dual-isotope approach; Qilian juniper; Northeastern Qinghai-Tibetan Plateau
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
来源期刊	GLOBAL AND PLANETARY CHANGE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158552
作者单位	Liu, XH (corresponding author), Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, 320 Donggang West Rd, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Wang, Wenzhi,Liu, Xiaohong,Xu, Guobao,et al. Temperature signal instability of tree-ring delta C-13 chronology in the northeastern Qinghai-Tibetan Plateau[J],2016,139.
APA	Wang, Wenzhi.,Liu, Xiaohong.,Xu, Guobao.,Zeng, Xiaomin.,Wu, Guoju.,...&Qin, Dahe.(2016).Temperature signal instability of tree-ring delta C-13 chronology in the northeastern Qinghai-Tibetan Plateau.GLOBAL AND PLANETARY CHANGE,139.
MLA	Wang, Wenzhi,et al."Temperature signal instability of tree-ring delta C-13 chronology in the northeastern Qinghai-Tibetan Plateau".GLOBAL AND PLANETARY CHANGE 139(2016).