RESULTS OF DENDROECOLOGICAL ASSESSMENT OF SPRUCE FORESTS

• Main Authors: Vernodubenko, V.S., Druzhinin, N.A., Druzhinin, F.N.
• Format: Conference Object
• Language: English
• Published: Инфинити 2020
• Subjects: spruce forests; annual rings; dendrochronology; temperature; pre- cipitation; taiga
• Online Access: https://dx.doi.org/10.34660/inf.2020.10.62.028; http://naukarus.ru/public_html/wp-content/uploads/2020/Scientific research of the SCO countries - English Reports - October 28 - Part 3.pdf=191

For forestry in Russia in each type of forest growing conditions, the features of the formation of tree rings are important. The size of tree rings is one of the indicators of the productivity of coniferous stands. Pine and spruce plantations grow on a significant area of the Vologda Oblast, which is geographically located in the northwestern part of the Russian Federation. Spruce is in the greatest de- mand among the population among these coniferous trees. This fact served as the choice of the research topic. In the course of its implementation, it was found the average radial growth of spruce is 1.29 mm, and the size of the annual rings varies significantly from year to year, since the standard deviation is 0.98 mm. The years of maximum and minimum growth often coincide, only sometimes in different spruce trees in the dynamics of growth along the radius there is a devia- tion of several years. The study did not reveal significant relationships between tree growth rates and long-term temperature variability, this is due to the fact that there are no sharp changes in its long-term course in the taiga zone, and trees have long adapted to climatic conditions. The width of the annual rings of the studied spruce forests also practically does not depend on the long-term variabil- ity of precipitation, this is due to the well-drained soil-ground conditions formed in this type of forest. The soil and hydrological conditions of this type of forest facilitate the removal of excess moisture from the soil surface.