气候变化领域集成服务门户(CCPortal): Tree rings reveal hydroclimatic fingerprints of the Pacific Decadal Oscillation on the Tibetan Plateau

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DOI	10.1007/s00382-019-04629-z
	Tree rings reveal hydroclimatic fingerprints of the Pacific Decadal Oscillation on the Tibetan Plateau
	Lyu L.; Büntgen U.; Treydte K.; Yu K.; Liang H.; Reinig F.; Nievergelt D.; Li M.-H.; Cherubini P.
发表日期	2019
ISSN	0930-7575
起始页码	1023
结束页码	1037
卷号	53 期号:2020-01-02
英文摘要	Predicting hydroclimatic changes on the Tibetan Plateau (TP) is crucial for managing water and ecosystems for the well-being of millions of people. Our understanding of the synoptic conditions on the TP is, however, still limited due to the paucity of meteorological measurements and proxy-based, high-resolution climate reconstructions. Here, we use state-of-the-art dendroclimatological techniques to investigate the paleoclimatic potential of drought-sensitive Picea likiangensis var. balfouriana forests between 4000 and 4500 m asl on the southeastern TP (SETP). The newly developed tree-ring width chronology correlates significantly with yearly changes in regional relative air humidity (RH) (r = 0.85, P < 0.001, 1978–2011). A new 407-year-long reconstruction of RH over the hydrological year from previous year August to July of the year of ring formation shows that, despite the generally humid conditions, four of the ten driest years are observed in the twentieth century with 1983 having been the driest. On the other hand, seven out of the ten most humid years were found in the eighteenth century. Our reconstruction reveals that the Pacific Decadal Oscillation (PDO) is the dominant climate driver at multi-decadal scales, but the relationships are not stable over time, with unknown underlying mechanisms. Although our study demonstrates the importance of the PDO for hydroclimate projections on the TP, caution is advised when considering only its most recent fluctuations. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Climate dynamics; Dendroclimatology; Drought extremes; Hydroclimate; Proxy reconstruction; Relative humidity; Tree rings
语种	英语
scopus关键词	climate change; climate prediction; coniferous forest; dendroclimatology; drought; Pacific Decadal Oscillation; paleoclimate; reconstruction; relative humidity; tree ring; China; Qinghai-Xizang Plateau; Picea likiangensis var. balfouriana
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146172
作者单位	State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, 20 Nanxincun, Haidian District, Beijing, 100093, China; Swiss Federal Research Institute WSL, Zürcherstrasse 111, Birmensdorf, 8903, Switzerland; Department of Geography, University of Cambridge, Downing Place, Cambridge, CB2 3EN, United Kingdom; Global Change Research Centre (CzechGlobe), Bělidla 986/4a, Brno, 60300, Czech Republic; Department of Geography, Faculty of Science, Masaryk University, Kotlářská 2, Brno, 613 00, Czech Republic; Institute of Integrative Biology, ETH Zürich, Universitätstrasse 16, Zurich, 8006, Switzerland; Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe District, Guangzhou, 510650, China
推荐引用方式 GB/T 7714	Lyu L.,Büntgen U.,Treydte K.,et al. Tree rings reveal hydroclimatic fingerprints of the Pacific Decadal Oscillation on the Tibetan Plateau[J],2019,53(2020-01-02).
APA	Lyu L..,Büntgen U..,Treydte K..,Yu K..,Liang H..,...&Cherubini P..(2019).Tree rings reveal hydroclimatic fingerprints of the Pacific Decadal Oscillation on the Tibetan Plateau.Climate Dynamics,53(2020-01-02).
MLA	Lyu L.,et al."Tree rings reveal hydroclimatic fingerprints of the Pacific Decadal Oscillation on the Tibetan Plateau".Climate Dynamics 53.2020-01-02(2019).