Arctic tundra ecosystems and their effects in a changing climate

北极苔原生态系统及其对气候变化的影响

• 批准号: RGPIN-2017-04093
• 负责人: Lafleur, Peter
• 金额: $ 1.97万
• 依托单位: Trent University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=634138
• 关键词: Arctic; tundra; ecosystems; their; effects

The Canadian Arctic contains about one-third of all circumpolar tundra and this land has particular cultural, biophysical and economic significance for all Canadians, especially its northern residents. However, global warming in the Arctic is occurring at an unprecedented rate and is driving significant changes in terrestrial and oceanic systems, such that feedbacks amplifying the warming are inevitable. On the Arctic tundra the alteration of vegetation communities and consequently their interactions with the atmosphere will play a significant role in future warming. Hence, we need to improve our understanding of these ecosystems and their role in the climate system.

加拿大北极地区约占所有极地冻土带的三分之一，这片土地对所有加拿大人，特别是其北方居民具有特殊的文化、生物物理和经济意义。然而，北极的全球变暖正以前所未有的速度发生，并正在推动陆地和海洋系统的重大变化，因此放大变暖的反馈是不可避免的。在北极苔原上，植被群落的改变及其与大气的相互作用将在未来变暖中发挥重要作用。因此，我们需要更好地了解这些生态系统及其在气候系统中的作用。