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<p>High-resolution, continuous Late Holocene lacustrine records are scarce in the Qaidam Basin, but is of especially important for our understanding the future climate variability in the western China. Here, we use grain size, element content and XRD-identified data from the Lake Hurleg in the eastern Qaidam Basin to present the Late Holocene climate variability, which have been temporally constrained using <sup>210</sup>Pb-, <sup>137</sup>Cs- and AMS <sup>14</sup>C dating. Our records demonstrate that decreased precipitation climate occurred at ∼800–1000 yr and ∼1300–1800 yr intervals, and increased precipitation occurred at ∼354–800 yr, ∼1000–1300 yr and ∼1800 yr to the present. The results show that the Qaidam Basin has undergone a process of warming and humidification since the Industrial Revolution, which is consistent with the meteorological records. The climate in the northeastern Qaidam Basin is dominated by the Asian Monsoon.</p>

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Late Holocene Hydroclimatic Variations at Lake Hurleg, Northeastern Tibet Plateau

  • 期刊论文

  • 发表日期：

    2025年2月5日

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  • Aiying Cheng,
  • Junqing Yu,
  • Yun Li,
  • Haicheng Wei,
  • Chunliang Gao,
  • Lisha Zhang

摘要

High-resolution, continuous Late Holocene lacustrine records are scarce in the Qaidam Basin, but is of especially important for our understanding the future climate variability in the western China. Here, we use grain size, element content and XRD-identified data from the Lake Hurleg in the eastern Qaidam Basin to present the Late Holocene climate variability, which have been temporally constrained using 210Pb-, 137Cs- and AMS 14C dating. Our records demonstrate that decreased precipitation climate occurred at ∼800–1000 yr and ∼1300–1800 yr intervals, and increased precipitation occurred at ∼354–800 yr, ∼1000–1300 yr and ∼1800 yr to the present. The results show that the Qaidam Basin has undergone a process of warming and humidification since the Industrial Revolution, which is consistent with the meteorological records. The climate in the northeastern Qaidam Basin is dominated by the Asian Monsoon.