IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Transition from a warm and dry to a cold and wet climate in NE China across the Holocene
Zheng, Yanhong1,2; Pancost, Richard D.3,4; Naafs, B. David A.3,4; Li, Qiyuan1; Liu, Zhao5; Yang, Huan6
AbstractNortheast (NE) China lies in the northernmost part of the East Asian Summer monsoon (EASM) region. Although a series of Holocene climatic records have been obtained from lakes and peats in this region, the Holocene hydrological history and its controls remain unclear. More specifically, it is currently debated whether NE China experienced a dry or wet climate during the early Holocene. Here we reconstruct changes in mean annual air temperature and peat soil moisture across the last similar to 13,000 year BP using samples from the Gushantun and Hani peat, located in NE China. Our approach is based on the distribution of bacterial branched glycerol dialkyl glycerol tetraethers (brGDGTs) and the abundance of the archaeal isoprenoidal (iso)GDGT crenarchaeol. Using the recently developed peat-specific MAAT(p)(eat) temperature calibration we find that NE China experienced a relatively warm early Holocene (similar to 5-7 degrees C warmer than today), followed by a cooling trend towards modern-day values during the mid- and late Holocene. Moreover, crenarchaeol concentrations, brGDGT-based pH values, and the distribution of 6-methyl brGDGTs, all indicate an increase in soil moisture content from the early to late Holocene in both peats, which is largely consistent with other data from NE China. This trend towards increasing soil moisture/wetter conditions across the Holocene in NE China records contrasts with the trends observed in other parts of the EASM region, which exhibit an early and/or mid-Holocene moisture/precipitation maximum. However, the Holocene soil moisture variations and temperature-moisture relationships (warm-dry and cold-wet) observed in NE China are similar to those observed in the core area of arid central Asia which is dominated by the westerlies. We therefore propose that an increase in the intensity of the westerlies across the Holocene, driven by increasing winter insolation, expanding Arctic sea ice extent and the enhanced Okhotsk High, caused an increase in moisture during the late Holocene in NE China. (C) 2018 Elsevier B.V. All rights reserved.
KeywordPeatland Gdgts Holocene Hydrological Evolution Air Temperature Ne China
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000433643200004
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Cited Times:20[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Affiliation1.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Xian 710069, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Shaanxi, Peoples R China
3.Univ Bristol, Sch Chem, Organ Geochem Unit, Bristol BS8 1TS, Avon, England
4.Univ Bristol, Cabot Inst, Bristol BS8 1TS, Avon, England
5.Xian Polytech Univ, Sch Environm & Chem Engn, Xian 710048, Shaanxi, Peoples R China
6.China Univ Geosci, Sch Earth Sci, State Key Lab Biogeol & Environm Geol, Wuhan 430074, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Zheng, Yanhong,Pancost, Richard D.,Naafs, B. David A.,et al. Transition from a warm and dry to a cold and wet climate in NE China across the Holocene[J]. EARTH AND PLANETARY SCIENCE LETTERS,2018,493(7):36-46.
APA Zheng, Yanhong,Pancost, Richard D.,Naafs, B. David A.,Li, Qiyuan,Liu, Zhao,&Yang, Huan.(2018).Transition from a warm and dry to a cold and wet climate in NE China across the Holocene.EARTH AND PLANETARY SCIENCE LETTERS,493(7),36-46.
MLA Zheng, Yanhong,et al."Transition from a warm and dry to a cold and wet climate in NE China across the Holocene".EARTH AND PLANETARY SCIENCE LETTERS 493.7(2018):36-46.
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