Dynamics of pine stands for the 20-th period in the conditions of the educational and experimental forestry of SibSU

Abstract

To solve various economic problems it is very important to know how taxation indicators change with increasing age in stands and different growing conditions, as well as quantitative and qualitative features in general. The research involved the processing of forest inventory materials. As the initial data we used taxation indicators for 1982 and 2002.
The research program included: study of dynamics of the forest inventory materials in 1982 and 2002; study of average indicators (age, bonitet, completeness, etc.); definition of dynamics of taxation indicators for the twenty-year period.
When estimating the distribution of the forest fund by land categories, both in 1982 and in 2002, the area of land covered by forest vegetation prevailed. Concerning the average stock and gain per 1 ha, the highest indicators were characteristic of the pine stand, with the average stock per 1 ha of pine stands growing by 28 m3 * ha–1 and the average gain per 1 ha over the same period by 0.1 m3 * ha–1.
Regarding the dynamics of the taxation indicators of pine stands: the carbon stock for the predominant part of allotments changed from 51.66 tC/ha to 91.30 tC/ha.
When evaluating the data in statics, the lines of average and current growth did not overlap, indicating the heterogeneity of the source material, since both normal and modal stands were used to evaluate the dynamics. However, the data in dynamics made it possible to determine that the age of quantitative ripeness of pine forests of Karaulnoe section forestry is 70 years.