Kinetics of organic matter release at two temperatures from selected peat materials at different state of secondary transformation

Laboratory experiments were performed to study the influence of time and temperature on the amount of organic matter released from soil.Samples of six different peat materials that represent: weakly, medium, strongly and very strongly secondary transform peats were submitted to release experiments at 20 and 90°C.Beside time and temperature, the state of secondary transformation of peat material has influenced on the amount of released organic matter. Two shapes of kinetic curves were obtained.