Authors:
Jyrki Jauhiainen , Hanna Silvennoinen, Mari Könönen, Suwido Limin and Harri Vasande
Book:
Proceedings of the 15th International Peat Congress
Venue:
Kuching
Keywords:
anoxia, decomposition-resistance, labile-carbon, land-use
Documentfile:
ipc16p127-131a044jauhiainensilvennoinen.etal_.pdf
Summary:
Extensive draining at tropical ombrotrophic peatlands in Southeast Asia has made them global ‗hot spots‘ for greenhouse gas emissions. Here, we present the first data on how management practises affect carbon (C) mineralization processes at these soils. We compared the peat carbon mineralization potentials of pristine forest to those of drained fire affected soils, with and without additional labile substrates (glucose, glutamate and NO3- N) and in oxic and anoxic conditions by dedicated ex situ experiments. Carbon mineralization (CO2 and CH4 production) rates were higher in the forest peat, which contains more labile C due to higher input via vegetation. Production…