新疆艾比湖沉积物全新世地球化学特征和孢粉组合变化数据集（全新世以来）

对新疆艾比湖盆地区进行调查，运用孢粉，元素地球化学，碳酸盐含量以及测年分析，对其沉积物进行研究，重建了湖区全新世古气候的演化序列。结果表明：10.2~8.9kaBP，气候温良偏干，8.0~3.5ka BP ，气候以温湿为主，其中7.3~6.4kaBP，为相对稳定暖湿期，3.5ka BP至今，以温干为主，气候与现代相似，随着湖面波动，艾比湖保存有全新世3个不同时期高湖面痕迹，并应用水热平衡模型，对各个高湖面的古降水量进行计算，全新世暖湿期的降水量比现今高出1/4以上，超过300mm/a，这时期湖面扩大了近3倍。

A survey was conducted in the Ebinur Lake Basin, Xinjiang, where sediment samples were analyzed using palynology, elemental geochemistry, carbonate content measurement and dating analysis to reconstruct the Holocene paleoclimate evolutionary sequence of the lake region. The results show that: from 10.2 to 8.9 ka BP, the climate was temperate and slightly dry; from 8.0 to 3.5 ka BP, the climate was dominated by warm and humid conditions, with the 7.3 to 6.4 ka BP interval being a relatively stable warm and humid period; from 3.5 ka BP to the present, the climate was dominated by temperate and arid conditions, similar to the modern climate. Against the backdrop of lake level fluctuations, Ebinur Lake preserves traces of high lake levels during three distinct Holocene periods. The hydrothermal balance model was applied to calculate the paleoprecipitation corresponding to each high lake level event, revealing that the precipitation during the Holocene warm and humid period was more than 1/4 higher than the current level, exceeding 300 mm/a, and the lake surface expanded nearly threefold during this period.

搜集汇总

背景与挑战

背景概述

该数据集聚焦新疆艾比湖地区，通过沉积物的孢粉、地球化学和测年分析，重建了全新世以来的古气候演化序列，揭示了从温良偏干到温湿再到温干的气候阶段变化，并量化了古降水量和湖面波动。数据来源于文献数字化处理，适用于古地理学和环境演变研究。