Collaborative Research: RCN: Vulnerability of Permafrost Carbon

合作研究：RCN：永久冻土碳的脆弱性

• 批准号: 0955713
• 负责人: Edward Schuur
• 金额: $ 38.7万
• 依托单位: University of Florida
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-06-01 至 2015-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0955713&HistoricalAwards=false
• 关键词: Collaborative; Research; RCN; Vulnerability; Permafrost

Humans are altering the global cycling of carbon (C) on Earth. The addition of billions of tons of greenhouse gases to the atmosphere is changing its heat-trapping capacity, which in turn is changing the Earth's climate. Large amounts of carbon are stored within the soils of terrestrial ecosystems. Recently, attention has been drawn to the thawing of permafrost (permanently frozen ground) as a mechanism that could move significant quantities of stored C from land to atmosphere in response to a changing climate. Because of the size and nature of the permafrost C pool, decomposition of previously frozen, old organic carbon is one of the most likely positive feedbacks from terrestrial ecosystems to climate change in a warmer world. While ground temperature increases in permafrost regions are well documented with data from permafrost borehole networks, as well as from surface temperature observations, there is a knowledge gap surrounding the response of permafrost carbon to climate change. This Vulnerability of Permafrost Carbon research coordination network (RCN) project will bring together biological and physical carbon cycle researchers. Through a series of meetings, working groups will be established that will address key questions about carbon cycling and vulnerability in permafrost regions and synthesize data and literature. An interactive website will be developed for non-scientists and the media that will synthesize the state of knowledge about permafrost. This RCN will strengthen the interconnection between biological and physical scientists, between early and later career-stage scientists, and will produce new knowledge through synthesis that can be used to quantify the role of permafrost carbon in affecting climate change in the 21st century and beyond.

人类正在改变地球上碳（C）的全球循环。 数十亿吨的温室气体进入大气层，改变了大气层的吸热能力，进而改变了地球的气候。 大量的碳储存在陆地生态系统的土壤中。最近，人们注意到永久冻土（永久冻土）的融化，作为一种机制，可以将大量储存的C从陆地转移到大气中，以应对气候变化。 由于永久冻土碳库的大小和性质，以前冻结的旧有机碳的分解是陆地生态系统对温暖世界中气候变化的最有可能的正反馈之一。 虽然多年冻土区地面温度的上升有多年冻土钻孔网络的数据以及地表温度观测的数据，但围绕多年冻土碳对气候变化的反应存在知识空白。 这个永久冻土碳研究协调网络（RCN）项目的脆弱性将汇集生物和物理碳循环研究人员。 通过一系列会议，将成立工作组，解决有关永久冻土区碳循环和脆弱性的关键问题，并综合数据和文献。 将为非科学家和媒体开发一个互动网站，综合介绍有关永久冻土的知识状况。 该RCN将加强生物和物理科学家之间的相互联系，早期和后期职业生涯阶段的科学家之间的相互联系，并将通过综合产生新的知识，可用于量化永久冻土碳在影响21世纪及以后气候变化中的作用。