Restoration of raised bogs : biogeochemical processes involved in the re-establishment of Sphagnum-dominated vegetation

摘要: Restoration of bog remnants by hydrological measures generally leads to inundation and rapid development Sphagnum vegetation when poorly humified peat is still present. The either swells up or becomes buoyant, creating a favourable substratum for Sphagnum. In many cases, however, only strongly remaining redevelopment usually not observed. Waterlogging therefore preferred in this case. Bulk density, structure methane production all play an important role the buoyancy floating newly formed carpets. Methane appears provide buoyancy. Peat characteristics such as C/P lignin/P ratios, pH, determine decomposition rates hence carbon dioxide production. On locations where present, raft formation can be stimulated introduction with suitable characteristics. acidic substrates enhanced mixing small amounts lime. Substrate derived both appear serve source High concentrations acrotelm stimulate hummock magellanicum. Typical species are, very slow colonisers. Introduction these carpets dominated cuspidatum fallax, on bare peat, promising. results show that biogeochemical ecophysiological knowledge vital choice sound restoration strategies.