The roundwood harvesting in Finland fluctuated a lot due to the changes in international forest-product market situation over past few decades (Statistics Finland 2012). This is because the mineral soils have been a sink, but the organic soils have been a source due to drainage of peatland. Organic soils have released more CO2 than what mineral soils removed in most years between 1990 and 2010. It is projected that forest soils will become, and the forest biomass will remain a sink with increasing rates of removal for 2013-2020.