Tree ring O-18's indication of a shift to a wetter climate since the 1880s in the western Tianshan Mountains of northwestern China
Xu, Guobao1,2; Liu, Xiaohong1; Wu, Guoju1,3; Chen, Tuo1; Wang, Wenzhi1,3; Zhang, Qiong4,5; Zhang, Youfu6; Zeng, Xiaomin1,3; Qin, Dahe1; Sun, Weizhen1; Zhang, Xuanwen1,3
2015-07-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
卷号120期号:13页码:6409-6425
文章类型Article
摘要

Central Asian droughts have drastically and significantly affected agriculture and water resource management in these arid and semiarid areas. Based on tree ring O-18 from native, dominant Schrenk spruce (Picea schrenkiana Fisch. et Mey.), we developed a 300year (1710-2010) standard precipitation-evaporation index (SPEI) reconstruction from January to August for China's western Tianshan Mountains. The regression model explained 37.6% of the variation in the SPEI reconstruction during the calibration period from 1950 to 2010. Comparison with previous drought reconstructions confirmed the robustness of our reconstruction. The 20th century has been a relatively wet period during the past 300years. The SPEI showed quasi 2, 5, and 10year cycles. Several pluvials and droughts with covariability over large areas were revealed clearly in the reconstruction. The two longest pluvials (lasting for 12years), separated by 50years, appeared in the 1900s and the 1960s. The most severe drought occurred from 1739 to 1761 and from 1886 to 1911 was the wettest period since 1710. Compared to previous investigations of hydroclimatic changes in the western Tianshan Mountains, our reconstruction revealed more low-frequency variability and indicated that climate in the western Tianshan Mountains shifted from dry to wet in 1886. This regime shift was generally consistent with other moisture reconstructions for the northeastern Tibetan Plateau and northern Pakistan and may have resulted from a strengthened westerly circulation. The opposite hydrological trends in the western Tianshan Mountains and southeastern Tibetan Plateau reveal a substantial influence of strengthened westerlies and weakening of the Indian summer monsoon.

关键词Tree Ring 18o Spei Drought Pluvials Regime Shift China's Western Tianshan Mountains
WOS标题词Science & Technology ; Physical Sciences
DOI10.1002/2014JD023027
关键词[WOS]Southeastern Tibetan Plateau ; North-atlantic Oscillation ; Drought Severity Index ; Isotope Ratios ; Delta-o-18 Chronology ; Stable-isotopes ; Precipitation ; Variability ; Cellulose ; Oxygen
收录类别SCI
语种英语
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000358695200007
出版者AMER GEOPHYSICAL UNION
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9264
专题黄土与第四纪地质国家重点实验室(2010~)
通讯作者Liu, Xiaohong
作者单位1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Cryospher Sci, Lanzhou, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Stockholm Univ, Dept Phys Geog, S-10691 Stockholm, Sweden
5.Stockholm Univ, Bolin Ctr Climate Res, S-10691 Stockholm, Sweden
6.Henan Univ Sci & Technol, Agr Coll, Luoyang, Peoples R China
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Xu, Guobao,Liu, Xiaohong,Wu, Guoju,et al. Tree ring O-18's indication of a shift to a wetter climate since the 1880s in the western Tianshan Mountains of northwestern China[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2015,120(13):6409-6425.
APA Xu, Guobao.,Liu, Xiaohong.,Wu, Guoju.,Chen, Tuo.,Wang, Wenzhi.,...&Zhang, Xuanwen.(2015).Tree ring O-18's indication of a shift to a wetter climate since the 1880s in the western Tianshan Mountains of northwestern China.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,120(13),6409-6425.
MLA Xu, Guobao,et al."Tree ring O-18's indication of a shift to a wetter climate since the 1880s in the western Tianshan Mountains of northwestern China".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 120.13(2015):6409-6425.
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