Vulnerability of soil organic matter in anthropogenically disturbed organic soils

Authors:
Annelie Säurich, Bärbel Tiemeyer, Michel Bechtold, Axel Don and Annette Freibauer

Book:
Proceedings of the 15th International Peat Congress

Venue:
Kuching

Keywords:
organic-matter, peatland, soils

Documentfile:
ipc16p136-140a109saeurichtiemeyer.etal_.pdf

Summary:

Drained peatlands are hotspots of carbon dioxide (CO2) emissions from agriculture. However, there is a high variability of the magnitude of CO2 for disturbed peat soils and little is known about the soil properties and drivers causing these differences in CO2 emissions. While the instantaneous driving factors for carbon cycling such as temperature and moisture are well studied for both genuine peat and mineral soil, there is a lack of information concerning the role of soil organic matter quality and in general for soil types at the boundary between organic and mineral soils. Our study aims to identify drivers for the vulnerability of soil organic matter to decomposition in…