Pliocene Arctic vegetation and its feedbacks with climate: combining Lake El´gygytgyn pollen data and vegetation modelling

上新世北极植被及其对气候的反馈：结合埃尔吉吉特金湖花粉数据和植被建模

• 批准号: 194256127
• 负责人: Professorin Dr. Ulrike Herzschuh
• 金额: --
• 依托单位: Fachrichtung Paläontologie
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2016-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/194256127?language=en
• 关键词: Pliocene; Arctic; vegetation; its; feedbacks

The investigations proposed contribute to the ICDP funded „El'gygytgyn Drilling Project“ in northeastern Siberia. They mainly comprise palynological analysis of the Pliocene and Early Pleistocene part of core D1 from central Lake El´gygytgyn, thus complementing respective investigations in the Middle and Late Pleistocene core part by collaborating palynologists in Russia and the USA. The warm Pliocene epoch is considered to be a close analogue to future global change. We aim (A) to quantify past climate change using inverse vegetation modelling based on fossil pollen data to conclude about potential further warming of the future Arctic; (B) to quantify tree taxa coverages using pollen-based landscape modelling that we will interpret in terms of vegetation-climate feedback mechanisms; (C) to infer past pollen inventory and diversity and its changes with climate cyclicity to understand the origin and source of modern Arctic vegetation. We deliberately intertwined modern and fossil pollen studies as well as proxy-based and modelling approaches in our study design. With our project we will contribute a palaeoclimatic perspective to controversially discussed questions concerning present-day and future Arctic warming and its feedbacks with vegetation.

拟议的调查有助于ICDP在西伯利亚东北部资助的“El‘gytgyn钻井项目”。它们主要包括对El‘gytgyn湖中部D1孔的上新世和早更新世部分进行孢粉学分析，从而补充了俄罗斯和美国孢粉学家在中、晚更新世核心部分的研究。温暖的上新世被认为与未来的全球变化非常相似。我们的目标是：(A)利用基于化石花粉数据的逆向植被模型来量化过去的气候变化，以得出未来北极可能进一步变暖的结论；(B)利用基于花粉的景观模型来量化树木种类的覆盖度，我们将根据植被-气候反馈机制来解释这种模式；(C)推断过去的花粉清单和多样性及其随气候旋回性的变化，以了解现代北极植被的起源和来源。在我们的研究设计中，我们故意将现代和化石花粉研究以及基于代理和建模的方法相互交织在一起。通过我们的项目，我们将从古气候的角度来探讨关于现在和未来北极变暖及其对植被的反馈的有争议的问题。

项目成果

Late Pliocene and Early Pleistocene vegetation history of northeastern Russian Arctic inferred from the Lake El'gygytgyn pollen record

从Elgygytgyn湖花粉记录推断俄罗斯北极东北部的上新世晚期和更新世早期植被历史

• DOI: 10.5194/cp-10-1017-2014
• 发表时间: 2014
• 期刊: Climate of The Past
• 影响因子: 4.3
• 作者: Andreev A.A;Tarasov P.E;Wennrich V;Raschke E;Herzschuh U;Nowaczyk N.R;Brigham- Grette J. ;Melles M.
• 通讯作者: Melles M.

Treeline dynamics in Siberia under changing climates as inferred from an individual-based model for Larix

• DOI: 10.1016/j.ecolmodel.2016.08.003
• 发表时间: 2016-10-24
• 期刊: ECOLOGICAL MODELLING
• 影响因子: 3.1
• 作者: Kruse, Stefan;Wieczorek, Mareike;Herzschuh, Ulrike
• 通讯作者: Herzschuh, Ulrike

Pliocene Warmth, Polar Amplification, and Stepped Pleistocene Cooling Recorded in NE Arctic Russia

• DOI: 10.1126/science.1233137
• 发表时间: 2013-06-21
• 期刊: SCIENCE
• 影响因子: 56.9
• 作者: Brigham-Grette, Julie;Melles, Martin;Herzschuh, Ulrike
• 通讯作者: Herzschuh, Ulrike

Millennial-scale vegetation changes in the north-eastern Russian Arctic during the Pliocene/Pleistocene transition (2.7–2.5 Ma) inferred from the pollen record of Lake El’gygytgyn

• DOI: 10.1016/j.quascirev.2016.03.030
• 发表时间: 2016-09
• 期刊: Quaternary Science Reviews
• 影响因子: 4
• 作者: Andrei A. Andreev;P. Tarasov;V. Wennrich;M. Melles