NOM quality and transfer from peat bogs due to environmental changes in the mountains "Erzgebirge" (Germany)
2005
Scheithauer, J.(Dresden Univ. of Technology (Germany). Inst. of Geography)E-mail:[email protected] | Grunewald, K.(Dresden Univ. of Technology (Germany). Inst. of Geography) | Pavlik, D.(Dresden Univ. of Technology (Germany). Inst. of Geography)
Drastic environmental changes have occurred in the mountains "Erzgebirge" during the last decades. Before 1989 large amounts of sulphur were transferred into the mountains. Increased pH values in precipitation have been observed after the political change in 1989. Extreme climatic events such as drought and heavy rainfalls occur more often. At the same time the NOM inputs in water reservoirs have raised to a large extent. Peat bogs are the main source for NOM. Laboratory experiments on peat bogs were conducted in order to investigate the causes. It was found that where sulphur is present, lower pH values reduce the NOM transfer. More NOM is discharged from peat bogs if the pH value increases. Dry periods followed by wet periods intensify the peat bogs' matter output as well.
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