Abstract
I. L. Bukharina*, A. Konopkova, K. E. Vedernikov, O. A. Svetlakova and A. S. Pashkova
This article presents materials evaluating the dynamics of spruce stands in the zone of coniferous-deciduous forests and the southern taiga zone of the European part of the Russian Federation in the territory of the Udmurt Republic. The analysis of the State Forest Register for the Udmurt Republic showed that the largest reduction in the area of spruce stands was observed in the southern part of the republic. The descriptions of the test areas established in various forestry zones revealed that the spruce stands were characterized by a low density of trees, whereby the absolute completeness of the studied stands varied from 2. 95 to 11. 1 m2/ha. A high content of deadwood was noted, which in volume exceeded the stock of raw-growing forest. The analysis of forest litter on the trial plots showed that most of them were completely decomposed residues or litter, ranging from 44% to 77%; a prevalence of the upper undecomposed layer over the semi-decomposed middle layer was noted.