气候变化领域集成服务门户(CCPortal): A 400-year tree-ring delta O-18 chronology for the southeastern Tibetan Plateau: Implications for inferring variations of the regional hydroclimate

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DOI	10.1016/j.gloplacha.2013.02.005
	A 400-year tree-ring delta O-18 chronology for the southeastern Tibetan Plateau: Implications for inferring variations of the regional hydroclimate
	Liu, Xiaohong; Zeng, Xiaomin; Leavitt, Steven W.; Wang, Wenzhi; An, Wenling; Xu, Guobao; Sun, Weizhen; Wang, Yu; Qin, Dahe; Ren, Jiawen
发表日期	2013
ISSN	0921-8181
起始页码	23
结束页码	33
卷号	104
英文摘要	We developed a new tree-ring cellulose delta O-18 chronology for the southeastern Tibetan Plateau from Balfour spruce (Picea likiangensis var. balfouriana [Rehd. et Wils.]) that covered the period from 1600 to 2008, and compared the results with a previous study to explore climatic variations in the Nyingchi-Bomi area. Our tree-ring delta O-18 chronology correlated significantly with the previous study (Shi et al., 2012; Climate of the Past 8, 205-213) during the common period from 1781 to 2005, and provided new insights into long-term regional hydroclimatic variations. Besides the significant positive correlations between tree-ring delta O-18 and the temperature and sunshine duration during the growing season, tree-ring delta O-18 was strongly negatively correlated with regional cloud cover, relative humidity, and precipitation in July and August. The correlations with cloud cover data were stronger than in previous research, but the correlations with precipitation and relative humidity in July and August were weaker. When Indian summer monsoon conditions prevail, regional hydroclimate variations (and especially cloud cover) have the dominant influence on tree-ring delta O-18 in the study area. Based on the regional data, delta O-18 in tree rings can be an effective proxy to infer the temporal variations in regional hydroclimatic conditions and the strength of the Indian Summer Monsoon. Our results reveal that the Indian Summer Monsoon weakened from 1600 to 1650, followed by continuous strengthening until 1740 and a slight weakening from 1740 to present. The temporal variations in the cellulose delta O-18 chronology generally corresponded well to the delta O-18 and glacier snow accumulation records found in ice cores from the middle Himalaya. (C) 2013 Elsevier B.V. All rights reserved.
英文关键词	Tree-ring delta O-18; Regional hydroclimate; Tibetan Plateau; Indian Summer Monsoon
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/158614
作者单位	Liu, XH (corresponding author), Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Donggang West Rd 320, Lanzhou 730000, Peoples R China.
推荐引用方式 GB/T 7714	Liu, Xiaohong,Zeng, Xiaomin,Leavitt, Steven W.,et al. A 400-year tree-ring delta O-18 chronology for the southeastern Tibetan Plateau: Implications for inferring variations of the regional hydroclimate[J],2013,104.
APA	Liu, Xiaohong.,Zeng, Xiaomin.,Leavitt, Steven W..,Wang, Wenzhi.,An, Wenling.,...&Ren, Jiawen.(2013).A 400-year tree-ring delta O-18 chronology for the southeastern Tibetan Plateau: Implications for inferring variations of the regional hydroclimate.GLOBAL AND PLANETARY CHANGE,104.
MLA	Liu, Xiaohong,et al."A 400-year tree-ring delta O-18 chronology for the southeastern Tibetan Plateau: Implications for inferring variations of the regional hydroclimate".GLOBAL AND PLANETARY CHANGE 104(2013).