Runoff of the lower part of pine trunks in the conditions of Biryusinsky district forestry

Abstract

The shape of a tree trunk depends on the various biological properties of a given breed and many factors of the external and internal environment, which act in different directions and are not always taken into account. The study of the shape and full-woodiness of trunks in different regions, depending on the taxation characteristics of stands, allows us to solve many problems related to the accuracy of accounting for the growth of trees and their volume.

The aim of the work is to evaluate the shape of trees on the basis of measurements of model trees on the territory of the Biryusinsky district forestry, to determine the average shape coefficient and the run-off of the trunks of scots pine.

During the analysis and determination of taxation indicators, the average shape of trees by height groups was established, the forming parts of the lower parts of model trees were selected, and the coefficients of the shape and runoff of the trunk of scots pine were established. Diagrams showing the relationship between the coefficients of shape and height from the base of the tree are compiled. For the calculated indicators (absolute diameters and shape coefficients), unified tables are compiled without separation by growing conditions.

The study showed slight differences in the average values of the shape coefficients, which confirms the uniformity of plantings growing in the same conditions. All equations were characterized by a high degree of adequacy.

The final table of the run-off of the lower part of the tree trunks of scots pine is compiled. A decrease in fluidity was observed with an increase in the average diameter.

The run-off table shows the volume of one-meter sections, which is necessary when finding the volume and stock of wood. Determining the volume of trees using shape coefficients greatly simplifies the taxation of the stand.