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

与阿拉斯加内陆最近的气候变暖有关，一些湿地地区的水体正在干涸，而其他地区正在变得更加潮湿。 该项目的目标是创建一个复制的实地实验，量化气候控制对阿拉斯加湿地二氧化碳和甲烷通量的影响。 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，将使用重复的开顶室来局部提高土壤温度。将定期测量这些地块上的二氧化碳和甲烷通量。 模型将被用作工具，以了解高纬度湿地温室气体反应的动力学和机制。 全球变暖正在影响北方森林地区的大部分地区，该地区含有世界上1/3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轻未来气候变暖的能力。阿拉斯加泥炭地实验将继续为北方生态系统实地研究的研究生和本科生培训提供一个宝贵的场所。 一个互动网站（http：www.apex.msu.edu）将为教师、研究人员和儿童提供一个可利用的资源，并在研究人员和公众之间交流数据。

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.