Summer moisture changes in the Lake Qinghai area on the northeastern Tibetan Plateau recorded from a meadow section over the past 8400 yrs
Summer moisture changes in the Lake Qinghai area on the northeastern Tibetan Plateau recorded from a meadow section over the past 8400 yrs
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青藏高原东北部青海湖地区草甸剖面记录8400年来夏季水分变化
DOI：
10.1016/j.gloplacha.2017.11.016
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发表时间：
2018-02
影响因子：
3.9
通讯作者：
Wang Zheng
中科院分区：
文献类型：
--
作者：
Li Xiangzhong;Liu Xiangjun;He Yuxin;Liu Weiguo;Zhou Xin;Wang Zheng
基于沉积岩心的气候记录，青藏高原东北部的全新世气候和环境变化已被广泛讨论。然而，该地区各种研究重建的气候历史仍然存在差异，这可能是由于多种因素的气候代理的影响以及湖泊沉积物年代的不确定性。在这里，我们展示了青藏高原东北部一块已确定年代的草甸区域过去 8400 年来陆地植物 δ13C、土壤颜色和总有机碳含量的记录。陆地植物 δ13C 值是研究地区夏季降水/湿度的良好指标。土壤颜色特性和 TOC 含量也能够解开水分演化历史。所有数据显示，在 8400-7400 卡路里 BP 时气候较为湿润，在 7400-6000 卡路里 BP 时气候干燥，然后在 6000-3200 卡路里 BP 时出现波动的潮湿气候。全新世晚期的水分似乎与距今 6000 至 3200 卡路里的潮湿条件相当。通过进一步将青海湖地区的气候变化与重建的夏季气温和亚洲季风降水的记录进行比较，我们认为青海湖地区的水汽/降水演变模式与青海湖周边地区并不完全一致，这可能是由于东亚夏季风与印度夏季风之间复杂的相互作用所致。
Holocene climatic and environmental changes on the northeastern Tibetan Plateau (TP) have been widely discussed based on the climatic records from sedimentary cores. However, differences in the reconstructed climatic history from various studies in this region still exist, probably due to influence of climatic proxies from multiple factors and the chronological uncertainties in lacustrine sediments. Here we present records of terrestrial plant δ13C, soil color and total organic carbon content over the past 8400 years from a well-dated meadow section on the northeastern TP. The terrestrial plant δ13C value serves as a good summer precipitation/moisture indicator in the studied region. Soil color property and TOC content are also able to disentangle the moisture evolution history. All the data show much wet climates at 8400–7400 cal yr BP, dry climates at 7400–6000 cal yr BP and then wet conditions with fluctuation at 6000–3200 cal yr BP. Late Holocene moisture appears to be comparable with moist conditions from 6000 to 3200 cal yr BP. By further comparing the climatic variations in the Lake Qinghai area with records of the reconstructed summer temperature and the Asian Monsoon precipitation, we believe that the pattern of moisture/precipitation evolution in the Lake Qinghai area was not completely consistent with regions around Lake Qinghai, probably due to complicated interaction between the East Asian Summer Monsoon and the Indian Summer Monsoon.
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DOI：
10.1016/0031-0182(91)90041-o
发表时间：
1991-05-01
影响因子：
3
作者：
LISTER, GS;KELTS, K;NIESSEN, F
通讯作者：
NIESSEN, F
影响因子：
4
作者：
Zhangdong Jin;Z. An;Jimin Yu;Fuchun Li;Fei Zhang
通讯作者：
Zhangdong Jin;Z. An;Jimin Yu;Fuchun Li;Fei Zhang
高山湖泊长链正构烷烃化合物特异性碳氢同位素记录揭示全新世华北地区同位素组成与降水量的异步演化
影响因子：
5.3
作者：
Yunxia Li;Jianhui Chen;Qinghai Xu;Fahu Chen
通讯作者：
Fahu Chen
影响因子：
2.3
作者：
Huanye Wang;Hailiang Dong;Chuanlun Zhang;Hongchen Jiang;Zhonghui Liu;Meixun Zhao;Weiguo Liu
通讯作者：
Huanye Wang;Hailiang Dong;Chuanlun Zhang;Hongchen Jiang;Zhonghui Liu;Meixun Zhao;Weiguo Liu
影响因子：
5.2
作者：
Hou, Juzhi;Huang, Yongsong;An, Zhisheng
通讯作者：
An, Zhisheng