Polygons in tundra wetlands: state and dynamics under climate variability in Polar Regions (POLYGON)

苔原湿地中的多边形：极地地区气候变化下的状态和动态（POLYGON）

• 批准号: 164232461
• 负责人: Professorin Dr. Ulrike Herzschuh
• 金额: --
• 依托单位: Forschungsstelle Potsdam
• 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 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/164232461?language=en
• 关键词: Polygons; tundra; wetlands; state; dynamics

Permafrost regions are strongly affected by ongoing global warming. The widely distributed Arctic patterned ground of polygonal wetlands underlain by permafrost is considered to be sensitive to environmental and climate changes. In a combined ecological and palaeo-ecological approach, modern, sub-recent and fossil ice-wedge polygons will be studied at three representative sites along a geographical gradient in the northeast Siberian lowlands in order to understand the temporal and spatial variations of polygon dynamics and their relation to climate change. In the proposed study design limnological, (palaeo-)ecological, pedological and cryological methods are tightly interconnected to assess modern and palaeo-environmental conditions and their main forcing parameters thoroughly. Terrestrial and aquatic species communities will be studied and cryogenic processes affecting polygonal landscape will be observed and evaluated. Results from the proposed project will allow predicting future environmental dynamics in permafrost regions. Extensive preparatory work including methodological tests, site visits and cooperation arrangements was performed by the applicants to ensure the feasibility of the project. The project will bring together German and Russian expertise in Arctic ecology and permafrost science complemented by international partners.

永久冻土区受到持续的全球变暖的强烈影响。广泛分布的北极多面体湿地被认为对环境和气候变化非常敏感。本文将采用生态学和古生态学相结合的方法，在东北西伯利亚低地沿地理梯度的三个代表性地点研究现代、亚近代和化石冰楔多边形，以了解多边形动力学的时空变化及其与气候变化的关系。在本研究设计中，湖沼学、（古）生态学、土壤学和冰学方法紧密联系，以全面评估现代和古环境条件及其主要强迫参数。研究陆生和水生物种群落，观察和评价影响多边形景观的低温过程。拟议项目的结果将有助于预测永久冻土区未来的环境动态。申请人进行了广泛的准备工作，包括方法测试、实地考察和合作安排，以确保项目的可行性。该项目将汇集德国和俄罗斯在北极生态和永久冻土科学方面的专业知识，并得到国际合作伙伴的补充。

项目成果

Carbon accumulation in a permafrost polygon peatland: steady long‐term rates in spite of shifts between dry and wet conditions

永久冻土多边形泥炭地的碳积累：尽管干燥和潮湿条件之间存在变化，但长期速率保持稳定

• DOI: 10.1111/gcb.12742
• 发表时间: 2015
• 期刊: Global Change Biology
• 影响因子: 11.6
• 作者: Couwenberg J

Ice Complex formation in arctic East Siberia during the MIS3 Interstadial

• DOI: 10.1016/j.quascirev.2013.11.009
• 发表时间: 2014-01
• 期刊: Quaternary Science Reviews
• 影响因子: 4
• 作者: S. Wetterich;V. Tumskoy;N. Rudaya;A. Andreev;T. Opel;H. Meyer;Lutz Schirrmeister;Matthias Hüls

Last Glacial Maximum records in permafrost of the East Siberian Arctic

• DOI: 10.1016/j.quascirev.2011.07.020
• 发表时间: 2011-10
• 期刊: Quaternary Science Reviews
• 影响因子: 4
• 作者: S. Wetterich;N. Rudaya;V. Tumskoy;Andrei A. Andreev;T. Opel;Lutz Schirrmeister;H. Meyer

Short-term dynamics of a low-centred ice-wedge polygon near Chokurdakh (NE Yakutia, NE Siberia) and climate change during the last ca 1250 years

乔库达赫（雅库特东北部、西伯利亚东北部）附近低中心冰楔多边形的短期动态和过去约 1250 年的气候变化

• DOI: 10.1016/j.quascirev.2011.06.016
• 发表时间: 2011
• 期刊: Quaternary Science Reviews
• 影响因子: 4
• 作者: de Klerk P;Donner N;Karpov NS;Minke M;Joosten H
• 通讯作者: Joosten H

River flooding as a driver of polygon dynamics: modern vegetation data and a millennial peat record from the Anabar River lowlands (Arctic Siberia)

河流洪水作为多边形动态的驱动因素：现代植被数据和来自阿纳巴尔河低地（北极西伯利亚）的千年泥炭记录

• DOI: 10.5194/bg-10-5703-2013
• 发表时间: 2013
• 期刊: Biogeosciences
• 影响因子: 4.9
• 作者: Zibulski R;Herzschuh U;Pestryakova LA;Wolter J;Müller S;Schilling N;Schirrmeister L;Wetterich S;Tian F
• 通讯作者: Tian F