Collaborative Research: Linking belowground phenology and ecosystem function in a warming Arctic

合作研究：将变暖的北极的地下物候与生态系统功能联系起来

• 批准号: 1108425
• 负责人: Patrick Sullivan
• 金额: $ 49.69万
• 依托单位: University of Alaska Anchorage Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2016-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1108425&HistoricalAwards=false
• 关键词: Collaborative; Research; Linking; belowground; phenology

Linking Belowground Phenology and Ecosystem Function in a Warming Arctic ? Non-technical abstract (E. Post, PI)This project comprises a four-year, passive warming experiment of low-Arctic tundra vegetation at a long-term study site in Greenland, with the primary aim of measuring the response of plant roots to warming, and the role of this response in ecosystem carbon exchange. Phenology, the annual timing and progression of events such as aboveground plant growth, is a well-studied an important component of the ecology of climate change, but remains under-studied belowground. This study will estimate and compare above- and belowground responses of plant phenology to warming and their respective contributions to ecosystem function, specifically the exchange of carbon between the atmosphere and tundra. It will furthermore determine which plant types, e.g., shrubs or grasses, show the greater belowground response to warming and contribution to ecosystem carbon exchange. Novel insights into the expected response of the Arctic to climate change will emerge from this experiment, which will also expand the infrastructure for field-based experimental and observational research in the Arctic. This research will promote the involvement of under-represented groups by recruitment of students through Penn State?s Minority Undergraduate Research Experience program, and promote education and dissemination of its results through a summer field ecology module at the study site and in courses at Penn State and the University of Alaska-Anchorage. Results will also be published in peer-reviewed journals and presented at international conferences by participating students and the Principal Investigators.

将变暖的北极地下物候与生态系统功能联系起来？非技术摘要（E. Post，PI）该项目包括在格陵兰岛的一个长期研究地点对低北极苔原植被进行为期四年的被动变暖实验，其主要目的是测量植物根系对变暖，以及这种反应在生态系统碳交换中的作用。 物候学，即地上植物生长等事件的年度时间和进展，是气候变化生态学的一个经过充分研究的重要组成部分，但对地下的研究仍然不足。 这项研究将估计和比较植物物候对变暖的地上和地下响应及其各自对生态系统功能的贡献，特别是大气和苔原之间的碳交换。 此外，它将进一步确定哪些植物类型（例如灌木或草）对变暖表现出更大的地下响应以及对生态系统碳交换的贡献。 这项实验将产生关于北极对气候变化的预期反应的新见解，这也将扩大北极实地实验和观测研究的基础设施。 这项研究将通过宾夕法尼亚州立大学的少数族裔本科生研究体验计划招募学生，促进代表性不足群体的参与，并通过研究地点和宾夕法尼亚州立大学课程的夏季实地生态学模块促进其结果的教育和传播和阿拉斯加大学安克雷奇分校。 结果还将发表在同行评审的期刊上，并由参与的学生和首席研究员在国际会议上展示。