Tavastia Proper is a strong Carbon husbandry region in Finland

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Solid cubic meters of forest trees and their annual growth in Finland since 1921

Kuva
At national level the most remarkable above ground Carbon stock in Finland is in the forests. The most common basic measurement for the forests, is the amount of above ground solid cubic meters in the trees. It is normally measured for the stems only. The data correlates strongly with the total dry biomass in the trees (stems, branches, foliage, stumps and roots). Further, the solid cubic meters data correlates strongly with the amount of elementary Carbon in the trees (stems, branches, foliage, stumps and roots). Photo 1. Boreal forests are a remarkable Carbon stock in Finland. The changes in the amount of solid cubic meters in the trees indicate the changes in the Carbon stock. Positive change tells about the Carbon sink flux into the forests. Negative change tells about the Carbon source flux (or Carbon emissions flux) from the forests.  The regular inventory of forest trees, for their solid cubic meters, has been done in Finland since 1921 (Figure 1). The latest National Fore...
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Development of the land area of Sink Forests in Finland since 1921

Kuva
The definition of Forestry land in Finland is based on the volume growth of existing, living trees in the selected area - or on the potential volume growth in same area if there has been for instance a temporary forest clear cut in the area. In the standard silviculture the area is waiting for replanting or for natural recovery, in a few (less than 10) years. The Forestry land has been divided into four categories (Figure 1). First, when the average volume growth (stems only) is more than one solid cubic meter per hectare per annum, the land area is called Forest land. Second, when the average volume growth is between 0.1 - 1.0 m3/ha/a the land area is called Poorly productive forest land. Third, when the average growth is less than 0.1 m3/ha/a the land area is still included in the main category of forestry land but it has been nominated as Unproductive (forest) land. Fourth, under the main Forestry category there is still a minimal forestry land class called Forest roads and depots....
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Total Carbon stock, and trees Carbon source or sink flux in Finnish forests since 1921

Kuva
The content of elementary Carbon in the dry biomass is quite constant of 50 per cent, of the dry weight. In simplified calculations this percentage can be used for the dry biomass of trees, for the dry biomass of grasses and cereals as well as the for the young humus in the soil. The coefficient for trees, Carbon multiplier (CM) for calculations of Carbon from solid cubic meters, can be calculated in a similar manner as the  calculation of dry biomass multiplier . Picture 1. Abundant Carbon stock in the Scots pine forest, Kuusamo Also in the total forest growing Carbon stock, it is logical to sum the stems, the branches including the foliage, and the roots. Mathematically the solid cubic meters in the stems (s, cubic meters) can be converted into total Carbon stock (c, tons C) with a coefficient or carbon multiplier (CM). (1)     c = CM * s Calculated as average from the Finnish forest inventories VMI 11 and VMI 12 the Carbon Multiplier is (2)    ...
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