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Tree-ring delta O-18 inferred spring drought variability over the past 200 years in the Hengduan Mountains, Southwest China
Zhao, Fan1; Fan, Zexin; Su, Tao; Li, Shufeng; Tang, He1; Spicer, Teresa E. V.; Zhou, Zhekun2
2019
Source PublicationPALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
Volume518Issue:xPages:22-33
Abstract

In this study, we developed a tree-ring delta O-18 chronology of Abies delavayi from Diancangshan (25 degrees 41'N, 100 degrees 06'E), in the Hengduan Mountains of Southwest China, spanning 205 years (1810-2014 CE). Tree-ring delta O-18 from Abies delavayi showed the highest negative correlation with relative humidity in the spring (r = -0.59, P < 0.05). Therefore, we used our delta O-18 chronology to reconstruct spring relative humidity during the period 1810-2014, which accounted for 35.1% of the variance of actual relative humidity for the calibration period 1979-2014. The reconstruction revealed two significantly dry periods during 1815-1835 and 1923-1940 CE, and a continuous shift towards drier conditions during the past 30 years. The long-term variability of spring relative humidity was consistent with previous results from Northwest Yunnan and regions nearby. We further suggest that the spring relative humidity variability in our study region might be linked to the El Nino-Southern Oscillation (ENSO), which is stimulated by the variation of sea surface temperatures in the central and east Pacific Ocean.

KeywordOxygen-isotope Ratios Precipitation Reconstruction Southern Oscillation Summer Monsoon Inner-mongolia Climate Cellulose Hydrogen Enso Biodiversity
Subject AreaPhysical Geography ; Geology ; Paleontology
DOI10.1016/j.palaeo.2018.12.020
Indexed BySCI
Language英语
WOS IDWOS:000459841500003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/11175
Collection2012年后新成立研究组
古生态研究组
Affiliation1.Chinese Acad Sci, CAS Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Menglun 666303, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Plant Divers & Biogeog East Asia, Kunming Inst Bot, Kunming 650204, Yunnan, Peoples R China
4.Spicer, Teresa E. V.] Chinese Acad Sci, State Key Lab Systemat & Evolutionary Bot, Inst Bot, Beijing 100093, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Fan,Fan, Zexin,Su, Tao,et al. Tree-ring delta O-18 inferred spring drought variability over the past 200 years in the Hengduan Mountains, Southwest China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2019,518(x):22-33.
APA Zhao, Fan.,Fan, Zexin.,Su, Tao.,Li, Shufeng.,Tang, He.,...&Zhou, Zhekun.(2019).Tree-ring delta O-18 inferred spring drought variability over the past 200 years in the Hengduan Mountains, Southwest China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,518(x),22-33.
MLA Zhao, Fan,et al."Tree-ring delta O-18 inferred spring drought variability over the past 200 years in the Hengduan Mountains, Southwest China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 518.x(2019):22-33.
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