Open AccessDYNAMICS OF NATURAL SPRUCE AND PINE REGENERATION ON ABANDONED HAYFIELDS
Author(s) -
М. В. Ермакова
Publication year - 2020
Publication title -
lesotehničeskij žurnal
Language(s) - English
Resource type - Journals
ISSN - 2222-7962
DOI - 10.34220/issn.2222-7962/2020.2/4
Subject(s) - picea abies , vegetation (pathology) , regeneration (biology) , deciduous , forestry , natural regeneration , settlement (finance) , woody plant , environmental science , agroforestry , ecology , geography , biology , medicine , pathology , world wide web , computer science , payment , microbiology and biotechnology
The study of regeneration features of forest vegetation that has come out of agricultural land is one of the urgent problems of Russia. This article presents the results of studying the spatial and age structure of the natural renewal of abandoned hayfields under the conditions of spruce and pine forests in comparable forest conditions of the Middle Urals. It has been established that, according to the quantitative indicators of settlement for both all and individual tree species, hayfields in the conditions of the pine forest are resumed much more efficiently than hayfields in the conditions of the grass spruce forest. The density of hayfield population of all tree species under conditions of both grass spruce and berrying pine shows a pronounced tendency to decrease with distance from seed sources. When woody vegetation is populated by hayfields under the conditions of grass spruce, the group type of tree distribution is predominant
characteristic of both the whole and individual tree species - spruce and birch. Regular type of distribution is typical for the conditions of berrying pine forests, and with active renewal of deciduous group type of settlement, both as a whole and separately for tree species. The first stage of overgrowing of spruce hayfields in the conditions of grass spruce occurs gradually. It starts from about 3-4 years after termination of exposure and lasts for a minimum of 20 years. Intensive settlement of pine begins from 2-3 years, reaching maximum values at 4-5th year after the termination of haying.