Substantial Mitigation Potential for Greenhouse Gases Under High Water Levels in a Cultivated Peatland in the Arctic.

ABSTRACT: Drained cultivated peatlands are recognized as substantial global carbon emission sources, prompting the exploration of water level elevation as a mitigation strategy. However, the efficacy of raised water table level (WTL) in Arctic/subarctic regions, characterized by continuous summer daylight, low temperatures and short growing seasons, remains poorly understood. This study presents a two-year field experiment conducted at a northernmost cultivated peatland site in Norway. We used sub-daily CO₂, CH₄, and N₂O fluxes measured by automatic chambers to assess the impact of WTL, fertilization, and biomass harvesting on greenhouse gas (GHG) budgets and carbon balance. Well-drained plots acted as GHG sources as substantial as those in temperate regions. Maintai

SUBMITTER: Zhao J 

PROVIDER: S-EPMC12598909 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature