J.J.H. van den Akker, P.C. Jansen, R.F.A. Hendriks, I. Hoving, M. Pleijter
Proceedings of the 14th International Peat Congress
ghg-emissions, oxidation, peat-soils, submerged-drains, subsidence
Van den Akker et al 2012: Submerged Infiltration to Halve Subsidence and GHG Emissions of Agricultural Peat Soils
Theme III. Agricultural use of peat and peatlands
Biological degradation (oxidation) of peat soils used in dairy farming causes subsidence rates up to 13 mm.y-1 and emissions of CO2 and N2O equal to about 3% of the annual anthropological CO2 emission in the Netherlands. In 2003 experiments started with subsurface irrigation by submerged drains to raise groundwater levels to reduce oxidation and so subsidence and GHG emissions. Subsidence and so CO2 emissions were reduced with 50%; amount of inlet water increased on average up to 30%; trafficability improved. Dairy farmers accept and see advantages of the use of submerged drains, which makes them a promising tool to preserve the valued peat soil landscape.