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Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years
Li, Jianyong1; Dodson, John1,2; Yan, Hong1; Cheng, Bo3; Zhang, Xiaojian4; Xu, Qinghai5; Ni, Jian6; Lu, Fengyan1
2017-05-27
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
卷号122期号:10页码:5132-5143
文章类型Article
摘要Quantitative information regarding the long-term variability of precipitation and vegetation during the period covering both the Late Glacial and the Holocene on the Qinghai-Tibetan Plateau (QTP) is scarce. Herein, we provide new and numerical reconstructions for annual mean precipitation (PANN) and vegetation history over the last 18,000 years using high-resolution pollen data from Lakes Dalianhai and Qinghai on the northeastern QTP. Hitherto, five calibration techniques including weighted averaging, weighted average-partial least squares regression, modern analogue technique, locally weighted weighted averaging regression, and maximum likelihood were first employed to construct robust inference models and to produce reliable PANN estimates on the QTP. The biomization method was applied for reconstructing the vegetation dynamics. The study area was dominated by steppe and characterized with a highly variable, relatively dry climate at similar to 18,000-11,000 cal years B.P. PANN increased since the early Holocene, obtained a maximum at similar to 8000-3000 cal years B.P. with coniferous-temperate mixed forest as the dominant biome, and thereafter declined to present. The PANN reconstructions are broadly consistent with other proxy-based paleoclimatic records from the northeastern QTP and the northern region of monsoonal China. The possible mechanisms behind the precipitation changes may be tentatively attributed to the internal feedback processes of higher latitude (e.g., North Atlantic) and lower latitude (e.g., subtropical monsoon) competing climatic regimes, which are primarily modulated by solar energy output as the external driving force. These findings may provide important insights into understanding the future Asian precipitation dynamics under the projected global warming.
WOS标题词Science & Technology ; Physical Sciences
DOI10.1002/2016JD026333
关键词[WOS]ASIAN SUMMER MONSOON ; CHINESE LOESS PLATEAU ; HOLOCENE MOISTURE EVOLUTION ; CLIMATE CALIBRATION SET ; GLACIAL-MAXIMUM ; POLLEN RECORD ; HIGH-RESOLUTION ; NORTHERN CHINA ; LAKE-SEDIMENTS ; INNER-MONGOLIA
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:000404131500006
引用统计
被引频次:5[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/361006/5458
专题古环境研究室
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China
2.Univ New South Wales, Sch Biol Earth & Environm Sci, Sydney, NSW, Australia
3.Cent China Normal Univ, Coll Urban & Environm Sci, Wuhan, Peoples R China
4.Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing, Jiangsu, Peoples R China
5.Hebei Normal Univ, Inst Nihewan Archaeol, Shijiazhuang, Peoples R China
6.Zhejiang Normal Univ, Coll Chem & Life Sci, Jinhua, Peoples R China
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Li, Jianyong,Dodson, John,Yan, Hong,et al. Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(10):5132-5143.
APA Li, Jianyong.,Dodson, John.,Yan, Hong.,Cheng, Bo.,Zhang, Xiaojian.,...&Lu, Fengyan.(2017).Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(10),5132-5143.
MLA Li, Jianyong,et al."Quantitative precipitation estimates for the northeastern Qinghai-Tibetan Plateau over the last 18,000 years".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.10(2017):5132-5143.
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