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Peatlands hold enormous stores of carbon, and the rates of carbon decomposition depend on water table fluctuations that contribute to aerobic or anaerobic conditions. Climate change can potentially increase carbon emissions due to its influence on hydrological processes across the watershed. We are investigating the hydrological processes that govern water flow through various landscape units within the peatland watershed, from upland forests to bog, lagg, and stream. We are focused particularly during the critical winter-spring transition season when high flow rates are sustained by snowmelt and regulated by soil frost. We do so through a combination of physical models and field measurements at the Marcell Experimental Forest in northern Minnesota.
Project Sponsor: Department of Energy (DE-SC0019036), National Science Foundation, Division of Earth Sciences (EAR-2153802).
Team: Xue Feng (PI), Salli Dymond (co-PI), Stephen Sebestyen (collaborator), Sean Swenson (collaborator), Mariel Jones (Ph.D. student), Sara Mohandes Samani (MS student), Judy Radick (Ph.D. student), and others
Selected Publications
Selected Publications
Feng, X. et al. (2020). Climate sensitivity of peatland methane emissions mediated by seasonal hydrologic dynamics. Geophysical Research Letters, p.e2020GL088875.
Jones et al. (2022). Soil frost controls streamflow generation processes in headwater catchments. Journal of Hydrology, 617, 128801.
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