Stephan Glatzel, Franziska Koebsch, Juliane Hahn, Sascha Beetz, Gerald Jurasinski
Proceedings of the 14th International Peat Congress
coastal-peatland, greenhouse-gas-mitigation, methane-release, peatland-restoration, rewetting
Theme X. Peatland carbon budgets and greenhouse gas (GHG) fluxes
In the NE German state of Mecklenburg-Vorpommern, various measures as withholding fertilization on agricultural peatlands, raising the groundwater table and flooding are taken to reduce greenhouse gas emissions on a variety of peatland types. Additionally, flooding the area between dikes has been suggested to contribute to greenhouse gas (GHG) mitigation.
We present data from projects where we monitored the GHG exchange of peatlands that have been subject to the mentioned measures. We employ laboratory, closed chamber and eddy covariance techniques. Results show that flooding with fresh water leads to a temporary, plant specific, strong increase of methane (CH4) release of ca. 1 t ha-1 yr-1. To the contrary, flooding with brackish water reduces CH4 release from coastal peatlands.