Quantitative reconstructions of late Quaternary vegetation, temperature and atmospheric precipitation variability in eastern Siberia: Evaluation of ecosystem stability/instability during episodes of rapid climate change

东西伯利亚晚第四纪植被、温度和大气降水变化的定量重建：气候快速变化期间生态系统稳定性/不稳定性的评估

• 批准号: 182070089
• 负责人: Dr. Stefanie Müller
• 金额: --
• 依托单位: Fachrichtung Paläontologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/182070089?language=en
• 关键词: Quantitative; reconstructions; late; Quaternary; vegetation

The scientific aim of this project is a chronologically well-constrained high-resolution reconstruction of the late Quaternary vegetation and climate fluctuations of eastern Siberia, as basis for the development of future environmental scenarios for this sensitive and economically important region of Eurasia with extreme continental climate and boreal forest vegetation. The vegetation development should be approached on the basis of pollen analysis in combination with phytolith, stomata and testate amoebae analysis, alkanes and preferably ancient plant DNA (aDNA) from lake sediments and peat profiles. The main focus is laid on central Yakutia, with the Lake Billyakh core sediments from the western Verkhoyansk Mountains serving as key palaeoenvironmental archives. The analytical and reconstruction results will valuably contribute to a better understanding of environmental dynamics and ecosystem stability/instability in the study region and will become an important segment in the regional reconstructions of late Quaternary vegetation and climate in northern and central Asia, including north-eastern Siberia and the Lake Baikal region as well as in the climate and vegetation model experiments. Preliminary works (pollen analysis, chronological classification with 14C-dates) in sediment records within the scope of the previous and prevailing projects have clearly proven that the research objectives can be achieved.

该项目的科学目标是对西伯利亚东部晚第四纪植被和气候波动进行年代学上严格限制的高分辨率重建，作为发展欧亚大陆这一敏感和经济上重要的地区未来环境情景的基础，该地区具有极端的大陆气候和北方森林植被。植被发育应在花粉分析、植物岩分析、气孔和遗存变形虫分析、烷烃分析以及湖泊沉积物和泥炭剖面的古植物DNA （aDNA）的基础上进行研究。主要的焦点放在雅库特中部，来自西部维尔霍扬斯克山脉的比利亚湖核心沉积物作为关键的古环境档案。分析和重建的结果将有助于更好地了解研究区域的环境动力学和生态系统的稳定性/不稳定性，并将成为东北亚和中亚地区（包括西伯利亚东北部和贝加尔湖地区）晚第四纪植被和气候的区域重建以及气候和植被模式实验的重要组成部分。前期和主导项目范围内沉积物记录的初步工作（花粉分析、14c年代分类）清楚地证明了研究目标是可以实现的。

项目成果

The climate and vegetation of Marine Isotope Stage 11 - Model results and proxy-based reconstructions at global and regional scale

• DOI: 10.1016/j.quaint.2013.12.028
• 发表时间: 2014-05
• 期刊: Quaternary International
• 影响因子: 2.2
• 作者: T. Kleinen;Steffi Hildebrandt;M. Prange;R. Rachmayani;S. Müller;E. Bezrukova;V. Brovkin;P. Tarasov

Vegetation dynamics around Lake Baikal since the middle Holocene reconstructed from the pollen and botanical composition analyses of peat sediments: Implications for paleoclimatic and archeological research

• DOI: 10.1016/j.quaint.2012.10.043
• 发表时间: 2013-03
• 期刊: Quaternary International
• 影响因子: 2.2
• 作者: E. Bezrukova;Stef;Hildebrandt;P. Letunova;E. V. Ivanov;Lyubov A. Orlova;S. Müller;P. Tarasov

Last glacial vegetation reconstructions in the extreme-continental eastern Asia: Potentials of pollen and n-alkane biomarker analyses

• DOI: 10.1016/j.quaint.2012.04.007
• 发表时间: 2013-03
• 期刊: Quaternary International
• 影响因子: 2.2
• 作者: P. Tarasov;S. Müller;M. Zech;D. Andreeva;B. Diekmann;C. Leipe

Stable vegetation and environmental conditions during the Last Glacial Maximum: New results from Lake Kotokel (Lake Baikal region, southern Siberia, Russia)

• DOI: 10.1016/j.quaint.2013.12.012
• 发表时间: 2014-10-20
• 期刊: QUATERNARY INTERNATIONAL
• 影响因子: 2.2
• 作者: Mueller, Stefanie;Tarasov, Pavel E.;Krivonogov, Sergey K.
• 通讯作者: Krivonogov, Sergey K.

Last interglacial vegetation in northern Asia: Model simulations and comparison with pollen-based reconstructions

亚洲北部最后一次间冰期植被：模型模拟以及与基于花粉的重建的比较

• DOI: 10.1016/j.quaint.2013.10.041
• 发表时间: 2014
• 期刊: Quaternary International
• 影响因子: 2.2
• 作者: M. Bergemann;S. Müller
• 通讯作者: S. Müller