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Browsing by Author "Karhu, K."
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Molecular sieve sampling of CO2 from decomposition of soil organic matter for AMS radiocarbon measurements
Hämäläinen, K.; Fritze, H.; Jungner, H.; Karhu, K.; Oinonen, M.; Sonninen, E.; Spetz, P.; Tuomi, Mikko; Vanhala, P.; Liski, J. (2010-04-01)A molecular sieve based procedure has been established for sampling CO2 of decomposing soil organic matter for AMS radiocarbon measurements. The sampling and desorption lines are capable to produce well measurable (>1 mg) ... -
Temperature sensitivity of organic matter decomposition in two boreal forest soil profiles
Karhu, K.; Fritze, H.; Tuomi, Mikko; Vanhala, P.; Spetz, P.; Kitunen, V.; Liski, J. (2010-01-01)Controversial conclusions from different studies suggest that the decomposition of old soil organic matter (SOM) is either more, less, or equally temperature sensitive compared to the younger SOM. Based on chemical kinetic ...