Late Holocene vegetation and climate change on the southeastern Tibetan Plateau: Implications for the Indian Summer Monsoon and links to the Indian Ocean Dipole
Late Holocene vegetation and climate change on the southeastern Tibetan Plateau: Implications for the Indian Summer Monsoon and links to the Indian Ocean Dipole
复制标题
青藏高原东南部全新世晚期植被和气候变化：对印度夏季风的影响及其与印度洋偶极子的联系
DOI：
10.1016/j.quascirev.2017.10.020
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发表时间：
2017-12
影响因子：
4
通讯作者：
Xiao Xiayun
中科院分区：
文献类型：
--
作者：
Li Kai;Liu Xingqi;Wang Yongbo;Herzschuh Ulrike;Ni Jian;Liao Mengna;Xiao Xiayun
印度夏季风（ISM）是最重要的气候系统之一，其变率和驱动机制是学术界和社会各界广泛关注的问题。在这里，我们提出了一个良好的日期高分辨率的花粉分析，从一个4.82米长的沉积物芯取自巴松措，在青藏高原东南部（TP），描绘了区域气候变化的过去一千年。我们的研究结果表明，亚高山针叶林占主导地位的Basomtso从约。750 cal. yr BP，表明气候温暖半湿润。在研究区的林线显着下降，从约。750至约。100 cal. yr BP，和寒冷的气候，对应的小冰期（LIA）占上风。自100 cal.yr BP以来，随着温度和湿度的上升，植被类型转变为森林草甸。排序分析表明，植被迁移主要受区域温度的影响，其次是水分。巴松措花粉记录和区域温度重建之间的进一步比较强调了从TP东南部的巴松措记录区域和全球气候的相关性。我们的花粉为基础的水分重建证明了强大的多世纪尺度的联系，ISM的变化，在过去的四个世纪季风强度的增加提供了坚实的证据。光谱分析表明太阳强迫的潜在影响。然而，更密切的关系已被观察到之间的多百年ISM变化和印度洋海表温度异常（SST），这表明在东南TP季风降水的变化可能是由印度洋偶极子的多百年尺度驱动。
The Indian Summer Monsoon (ISM) is one of the most important climate systems, whose variability and driving mechanisms are of broad interest for academic and societal communities. Here, we present a well-dated high-resolution pollen analysis from a 4.82-m long sediment core taken from Basomtso, in the southeastern Tibetan Plateau (TP), which depicts the regional climate changes of the past millennium. Our results show that subalpine coniferous forest was dominant around Basomtso fromca.867 toca. 750 cal. yr BP, indicating a warm and semi-humid climate. The timberline in the study area significantly decreased fromca.750 toca.100 cal. yr BP, and a cold climate, corresponding to the Little Ice Age (LIA) prevailed. Sinceca.100 cal. yr BP, the vegetation type changed to forest-meadow with rising temperatures and moisture. Ordination analysis reveals that the migration of vegetation was dominated by regional temperatures and then by moisture. Further comparisons between the Basomtso pollen record and the regional temperature reconstructions underscore the relevance of the Basomtso record from the southeastern TP for regional and global climatologies. Our pollen based moisture reconstruction demonstrates the strong multicentennial-scale link to ISM variability, providing solid evidence for the increase of monsoonal strengths over the past four centuries. Spectral analysis indicates the potential influence of solar forcing. However, a closer relationship has been observed between multicentennial ISM variations and Indian Ocean sea surface temperature anomalies (SSTs), suggesting that the variations in monsoonal precipitation over the southeastern TP are probably driven by the Indian Ocean Dipole on the multicentennial scale.
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影响因子：
4.6
作者：
Liu X;Yu Z;Dong H;Chen HF
通讯作者：
Chen HF
DOI：
--
发表时间：
2002
期刊：
--
影响因子：
--
作者：
T. Braak;F. Cateten;P. Šmilauer
通讯作者：
T. Braak;F. Cateten;P. Šmilauer
影响因子：
64.8
作者：
Oppo, Delia W.;Rosenthal, Yair;Linsley, Braddock K.
通讯作者：
Linsley, Braddock K.
中国东阁洞近1200年来亚洲夏季风的高分辨率记录
影响因子：
4
作者：
R. Lawrence Edwards;Hai Cheng;Dianbing Liu;Xinggong Kong
通讯作者：
Xinggong Kong
影响因子：
4
作者：
S. Chawchai;A. Chabangborn;S. Fritz;M. Väliranta;C. Mörth;M. Blaauw;P. Reimer;P. Krusic;L. Löwema
通讯作者：
S. Chawchai;A. Chabangborn;S. Fritz;M. Väliranta;C. Mörth;M. Blaauw;P. Reimer;P. Krusic;L. Löwema