Current issue: 56(2)
Under compilation: 56(3)
The Moscow Peace Treaty created a need to calculate values of large forest areas in Finland, such as the value of the private and state forests lost in the Second World War, or value of the remaining forests and the value of forests to be assigned to the evacuees. The article describes principles of evaluation of large forest areas. It concludes that use of felling value of the trees is the right method only if felling of the whole tree stand and sale of the wood is actually possible. If these prequisites cannot be fulfilled, the right method to evaluate the forest area is yield in terms of value. When calculating the yield in terms of value, also other incomes and costs related to fellings should be included.
The article includes an abstract in German.
In this investigation was studied 1) Volume growth and yield of timber in managed Norway spruce (Picea abies (L.) Karst.) forests under different rotations. 2) Value growth, net forest income and soil expectation value of managed forests under different rotations, and 3) The rotations of spruce forests managed on different rotation principles. The data was collected from Oxalis-Myrtillus type forests in South-West Finland.
Two developmental series of stands were constructed for the research, one of which were of better sites than the other. Sample plots were pure, even-aged spruce stands in well-managed forests. The stands had been thinned from below. The age varied from 25-30 years to the age of final cutting.
According to the study, in the artificially regenerated spruce stands the highest mean annual volume growth, 9.7 m3/ha, and also the highest net annual income of 14,50 Finnish marks/ha (calculated from average stumpages) was reached in rotation of 70 years. In the other managed spruce forests a mean annual volume growth of 6.6-8.8 m3/ha and the net annual income of 10,500-14,500 Finnish marks/ha were reached in the rotation of 70-100 years. The rotation for the maximum mean annual volume growth varied in the different series between 67-92 years. The maximum mean annual forest rent was only achieved in series B in a rotation of about 100 years, and in a naturally normal stand in a rotation of about 120 years. The intensity of thinnings and silviculture had a greater effect on value growth and on net income than on volume growth.
The PDF includes a summary in English.
The article discusses use of felling value in determining the value of growing stock. It has been argued that use of felling value to calculate value for a forest holding usually leads to too high values. Consequently, when setting a price for growing stock, felling value should be applied only for such parts of the property that can be sold immediately at a current price.
The article describes in detail assessment of the felling value, first using timber assortments of the stand, and second, by conducting the felling value using parameters affecting the value, such as volume and tree species of the stand. An assessment method was developed to calculate the value by using structure of a cubic metre of timber in a stand. The structure was determined using data of the national forest inventory in Finland. Finally, the article discusses application of the method.
The PDF includes a summary in German.