Modeling of the assortment structure of spruce tree trunks in the Kostroma region, European Russia

Abstract

The issue of using the equations of the stem taper to develop new standards for the assortment of the forest stands is relevant and is widely presented in local and foreign industry sources. The values of trunk diameters for assortment assessment were determined using the O. Garcia stem taper equation. A method for modeling the assortment structure of spruce tree trunks using the stem taper model is proposed. A comparison of the obtained data with current forest inventory standards showed that the use of the stem taper model made it possible to increase the accuracy of accounting for large commercial timber of the highest height quality class by up to 27%. Adjusting the yield values of large, medium, small wood commodity, volume of firewood and waste will help to rationalize the use of trunks and increase the profitability of forestry in the region. The application of the proposed methodology will help to simplify the procedure for sorting forest resources and reduce the costs of its implementation.