DOI: 10.1016/j.gloplacha.2014.12.002
论文题名: Drought signals in tree-ring stable oxygen isotope series of Qilian juniper from the arid northeastern Tibetan Plateau
作者: Qin C. ; Yang B. ; Bräuning A. ; Grießinger J. ; Wernicke J.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2015
卷: 125 起始页码: 48
结束页码: 59
语种: 英语
英文关键词: Hydroclimate
; North-east Tibetan plateau
; Sabina przewalskii
; Stable oxygen isotopes
; Wood cellulose
Scopus关键词: Atmospheric temperature
; Cellulose
; Climate change
; Drought
; Isotopes
; Oceanography
; Oxygen
; Surface waters
; Wood
; Climate reconstruction
; Hydroclimate
; Northeastern tibetan plateaux
; Oxygen isotopic composition
; Sabina przewalskii
; Sea surface temperature (SST)
; Stable oxygen isotopes
; Tibetan Plateau
; Forestry
; arid environment
; chronology
; climate variation
; coniferous tree
; correlation
; cost-benefit analysis
; drought
; future prospect
; isotopic composition
; oxygen
; paleoclimate
; sea surface temperature
; stable isotope
; tree ring
; wood
; Cellulose
; Isotopes
; Oxygen
; Wood
; China
; Qinghai-Xizang Plateau
; Juniperus
英文摘要: For the mechanistic understanding of hydroclimate variability, stable oxygen isotopic ratios (δ18O) of tree-ring α-cellulose can play a key role in paleoclimatic research. On the north-east Tibetan Plateau (TP), a region particularly sensitive to climate change, there exists a distinct lack of δ18O research in tree-ring archives. The few currently existing tree-ring δ18O chronologies were obtained by pooling the wood material from the same year from different trees prior to preparation and analysis. Although this method is time and cost efficient, it might impede the analysis of changes within the internal variability of oxygen isotope signals and a deeper understanding of the resulting climate reconstruction. We selected five Qilian juniper (Sabina przewalskii Kom.) trees covering the period 1951-2011 on the north-east TP to investigate the climate signals contained in stable oxygen isotopic composition records obtained using single tree analysis. Although the inter-series correlation between the five individual δ18O series indicates a highly significant relationship (mean r=0.59, n=59, p=0.01), the five individual δ18O series show significantly differently mean values. We found significant negative correlations between drought/hydroclimatically triggered climate parameters (PDSI, precipitation) and each of the individual δ18O series. Spatial correlation maps indicate negative correlation of tree-ring δ18O and Indian Ocean sea surface temperatures, and inverse correlation patters of moisture conditions on the northern and southern TP. Our results provide a reference for future research on stable oxygen isotope/climate signals in the species S. przewalskii Kom. © 2014 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84920125265&doi=10.1016%2fj.gloplacha.2014.12.002&partnerID=40&md5=760e7fc7abe423de1df3650498d9f990
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11565
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: Key Laboratory of Desert and Desertification, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, 320 Donggang West Road, Lanzhou, China
Recommended Citation:
Qin C.,Yang B.,Bräuning A.,et al. Drought signals in tree-ring stable oxygen isotope series of Qilian juniper from the arid northeastern Tibetan Plateau[J]. Global and Planetary Change,2015-01-01,125.