Collaborative Research: Soil Climate and its Control on Wetland Carbon Balance in Interior Boreal Alaska: Experimental Manipulation of Thermal and Moisture Regimes

合作研究：阿拉斯加内陆北方土壤气候及其对湿地碳平衡的控制：热和湿度状况的实验控制

• 批准号: 0830997
• 负责人: Merritt Turetsky
• 金额: $ 52.92万
• 依托单位: University of Alaska Fairbanks Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-03-01 至 2014-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0830997&HistoricalAwards=false
• 关键词: Collaborative; Research; Soil; Climate; its

In association with recent climatic warming in interior Alaska, water bodies in some wetland regions are drying, while other regions are becoming wetter. The goal of this project is to create a replicated field experiment that quantifies climate controls on carbon dioxide and methane fluxes in Alaskan wetlands. In multiple sites, plots will be established that include control, drainage and flooded water table treatments. Within these treatments, replicate open top chambers will be used to locally increase soil temperatures. Fluxes of carbon dioxide and methane will be measured regularly on these plots. Models will be used as tools to understand the dynamics and mechanisms underlying greenhouse gas responses from high latitude wetlands. Global warming is affecting much of the boreal forest region, a region which contains 1/3 of the world's soil carbon, much of it stored in wetlands. This study will improve the ability to quantify how responses of greenhouse gases in Alaskan wetlands may enhance or mitigate future climate warming. The Alaska Peatland Experiment will continue to provide a valuable venue for graduate and undergraduate training in field research in northern ecosystems. An interactive website (http:///www.apex.msu.edu) will provide an accessible resource for teachers, researchers and children as well as data exchange among researchers and the general public.

随着最近阿拉斯加内陆气候变暖，一些湿地地区的水体正在干涸，而其他地区的水体正在变得更加潮湿。该项目的目标是创建一个重复的野外实验，量化气候对阿拉斯加湿地二氧化碳和甲烷通量的控制。在多个地点，将建立包括控制、排水和淹没地下水位处理的地块。在这些处理中，将使用重复的开顶式气室来局部提高土壤温度。将在这些地块上定期测量二氧化碳和甲烷的通量。模型将被用作了解高纬度湿地温室气体反应的动力学和机制的工具。全球变暖正在影响北方森林地区的大部分地区，该地区拥有世界三分之一的土壤碳，其中大部分储存在湿地中。这项研究将提高量化阿拉斯加湿地温室气体反应如何增强或减缓未来气候变暖的能力。阿拉斯加泥炭地实验将继续为北部生态系统领域的研究生和本科生提供有价值的培训场所。一个互动网站(http:///www.apex.msu.edu))将为教师、研究人员和儿童提供可访问的资源，并在研究人员和普通公众之间交换数据。