Finding coefficients for correction of potential value of wood assortments in real on the example of beech from thinning cuts in Serbia

Calculating the value of wood in forests has always been a job full of challenges for the appraiser, especially if in that case the condition is not to cut down trees. As one of the possibilities, the method of "model" cutting can be used, which is practically the only one that allows assessment value without cutting trees. It consists in estimating the volumes of assortment classes only on the basis of tree dimensions (d and h) and valid standards for forest exploitation products, and later, by multiplication with prices, the required value is obtained. As other characteristics of the tree (wood defects) are not taken into account in this procedure, it is obviously an ideal (maximum) value. In order to harmonize it with the real value, which is always lower than the "model" value, a request is imposed for the correction of the "model" value with appropriate coefficients. In this research, an attempt was made to obtain such coefficients for material from thinning in beech high (5,973 trees) and coppice (1,842 trees) forests and to check the degree of accuracy during their application.