THE STATE OF SPRUCE STANDS IN THE UDMURT REPUBLIC

Abstract

The article presents materials on the dynamics of spruce stands in the zone of coniferous-deciduous forests and in the south taiga zone of the European part of the Russian Federation, on the territory of the Udmurt Republic. In the process of the research, the information from the state forest register for the Udmurt Republic from 2009 to 2015 was analyzed. In order to assess the state of spruce forests, trial areas were laid in various forestry zones. It is shown that the largest reduction in the area of spruce stands is observed in the southern part of the Republic, in comparison with the Northern part, which is located in a different landscape zone. According to the data of the enumeration estimation, a high content of dry wood was noted, that exceeds the volume of raw-growing forest. As a result of research on trial areas, spruce individuals that have a good life condition along with dead trees were identified, which indicates the individual characteristics of the surviving plants. Thus, in the zone of active distribution of xylophages the surviving individuals have an increased content of tannins in the wood. The research was carried out with the financial support of RFBR No. 19-04-00353 A.