气候变化领域集成服务门户(CCPortal): Temperature signals complicate tree-ring precipitation reconstructions on the northeastern Tibetan Plateau

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DOI	10.1016/j.gloplacha.2021.103460
	Temperature signals complicate tree-ring precipitation reconstructions on the northeastern Tibetan Plateau
	Liu, Wenhuo; Gou, Xiaohua; Li, Jinbao; Huo, Yuxia; Yang, Meixue; Zhang, Junzhou; Zhang, Weiguo; Yin, Dingcai
通讯作者	Gou, XH (通讯作者)，Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, MOE, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0921-8181
EISSN	1872-6364
卷号	200
英文摘要	Tree-ring width chronologies are a critically important material to reconstruct past precipitation variability on the northeastern Tibetan Plateau (NTP). However, temperature signals are often encoded in these chronologies, which complicate the precipitation reconstructions and should be carefully assessed. Here, a dataset of 487 Qilian juniper (Juniperus przewalskii Kom.) tree-ring width series from 16 sites on the NTP were collected to investigate the influence of different temperature signals on the precipitation reconstructions. Correlation analysis showed that all tree-ring series recorded similar precipitation information, but had positive (p 0.05, Group1), weak (p 0.05, Group2), and negative (p < 0.05, Group3) correlations with temperature, respectively. In view of this, all tree-ring series were divided into three groups to develop chronologies to reconstruct local precipitation. During the calibration period of 1957?2011 CE, the Group1 reconstruction had the fastest uptrend, which almost overlapped the observed precipitation; the Group2 reconstruction showed a slower uptrend, whereas the Group3 reconstruction lacked an uptrend. As a result, we get different results when the reconstructions were used to assess the current precipitation status over the past millennium. The Group1 (Group2) reconstructions showed that the recent 20 (10) years were the highest precipitation period over the past millennium, whereas the Group3 reconstruction did not capture this phenomenon. Therefore, we caution that the temperature effects should be evaluated carefully before tree-ring width chronologies being employed to study past precipitation variability.
关键词	QILIAN MOUNTAINS DROUGHT RECONSTRUCTION QINGHAI PROVINCE VARIABILITY WIDTHS MILLENNIUM CENTURIES JUNIPER GROWTH CHINA
英文关键词	Tree-ring width; Tempertature signals; Precipitation reconstruction; Low-frequency trends; Climate signal separation
语种	英语
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000640389200003
来源期刊	GLOBAL AND PLANETARY CHANGE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254790
作者单位	[Liu, Wenhuo; Yang, Meixue] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Liu, Wenhuo; Gou, Xiaohua; Huo, Yuxia; Zhang, Junzhou; Zhang, Weiguo; Yin, Dingcai] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab Western Chinas Environm Syst, MOE, Lanzhou 730000, Peoples R China; [Gou, Xiaohua; Zhang, Junzhou] Lanzhou Univ, Gansu Liancheng Forest Ecosyst Field Observat & R, Lanzhou 730333, Peoples R China; [Li, Jinbao] Univ Hong Kong, Dept Geog, Hong Kong, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Liu, Wenhuo,Gou, Xiaohua,Li, Jinbao,et al. Temperature signals complicate tree-ring precipitation reconstructions on the northeastern Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,200.
APA	Liu, Wenhuo.,Gou, Xiaohua.,Li, Jinbao.,Huo, Yuxia.,Yang, Meixue.,...&Yin, Dingcai.(2021).Temperature signals complicate tree-ring precipitation reconstructions on the northeastern Tibetan Plateau.GLOBAL AND PLANETARY CHANGE,200.
MLA	Liu, Wenhuo,et al."Temperature signals complicate tree-ring precipitation reconstructions on the northeastern Tibetan Plateau".GLOBAL AND PLANETARY CHANGE 200(2021).