| Summary: | Based on the analysis of forest management materials electronic database, the main indicators of Kracnovishersky forestry coniferous stands, the most typical for the middle Ural forest region, has been analyzed. It was found that spruce forests are represented mainly by plantations of the seventh age class (48,38 %), the share of young stands of the first age class being 5,57 %. This indicates the accumulation of overmature spruce stands with reduced resistance against unfavorable natural and anthropogenic factors. The significant potential of spruce forests is evidenced by the fact that 53,49 % of spruce stands belong to the second and 33,83 % to the third bonitet class. At the same time 66,23 % spruce stands of the forestry groups on the most fertile soils – type of the forest growing conditions C3. At the same time, among spruce forests the share of low density stands (0.3–0.5) is 46,47 %. The latter allows to consider an increase in the relative completeness of the stand as one of the important direction for increasing the productivity of spruce forests. Artificial spruce stands of 60 years of age in the conditions of greenish moss berry stande allows to obtain 260 m3/ha with an average diameter 15,1 sm. The age of felling established for commercial spruce forests in plantations of III and higher bonitet classes of 81–100 years cannot be considered justified for artificial spruce plantations. Reducing the cutting age to 61–80 years will not only increase the productivity of forests, but also provide spruce balances for AO Solikamskbumprom. На основе анализа электронных баз данных лесоустроительных материалов проанализированы основные показатели хвойных насаждений «ключевого» (наиболее типичного) для Средне-Уральского таежного лесного района Красновишерского лесничества. Установлено, что ельники представлены преимущественно насаждениями 7 класса возраста (48,38 %) при доле молодняков первого класса возраста 5,57 %. Указанное свидетельствует о накоплении перестойных еловых насаждений с пониженной ...
|
|---|