CARBON STOCK AND HUMIC MATTER EXPORT FROM PEAT BOGS DUE TO ENVIRONMENTAL AND LAND USAGE CHANGES IN THE ORE MOUNTAINS (GERMANY / CZECH REPUBLIC)

摘要

Since the 1990's, changes in natural organic matter (NOM) of surface waters, were observed in the Ore Mountains. Forested catchments with high shares of peat bogs show the strongest increase of NOM output. It was found that a close connection exists between peat conditions and operation of ditches. Open ditches reduce NOM loads. Closed ditches support water retention in the restored area by the increase of NOM. Furthermore, actual environmental changes (decrease sulphur deposition, enhanced pH value) in Europe, cause changes in the peat as well as control of NOM flux, from demoted peat bogs.