THE STATE OF NATURAL REFORESTATION AFTER CLEAR CUTTING IN FOREST DIVISION “KUNGURSKOE” OF THE PERM REGION
On the territory of the forest fund of the forest division “Kungurskoe” in Perm Territory, studies were conducted to study the state of natural regeneration in the areas where clear-cutting was carried out in 2007 - 2010. On the clear cuts of past years, eight runways (temporary trial plots) were laid in sorrel pine forests and spruce forests of green-moss forest types. It was revealed that only the pine and birch were in the composition of the undergrowth of the preliminary generation in acidic pine trees, and after spruce cutting, spruce appeared. In green-spruce spruce forests before felling, the proportion of spruce in the undergrowth was 10 units, and after felling in the undergrowth there appeared birch and aspen of overgrown origin. There is a uniform distribution of undergrowth on all runways, with TTP-7. The density of viable undergrowth in terms of large economically valuable species, pine and spruce, in sorrel saplings varies from 1110 to 4150 pcs / ha, and in green spruce forests (economically valuable species - spruce) - from 1065 to 1338 pcs. / ha, which indicates insufficiently successful natural reforestation. In the studied types of forest growing conditions, it is recommended to conduct a combined method of reforestation of clear-cutting, which consists in creating forest crops in places where there is no undergrowth. In this case, planting should be carried out by seedlings of trees of valuable species: pine and spruce. In order to prevent an undesirable change of root stands in these types of forests, broad-leaved clear cuttings should be abandoned, replacing them with selective ones.