Modelling wood properties in forest ecosystems

One of the leading places on the volume of the gross domestic product and exports in the structure of the economy of the North-West of Russia is the production of timber. An important part of their competitiveness - high quality. Depending on the quality of wood raw materials roundwood harvested 1, 2 and 3rd grades. The grade is determined by the size of the timber, the presence and severity of defects. Defining the classes of standing timber is an urgent task.