Main Article Content
Due to the lack of natural woody vegetation on flat or elevated relief elements, protective afforestation is associated with the introduction of tree species of foreign origin. Uncontrolled process of enrichment of protective forest plantations woody plants in forest-poor regions leads to invasion.
The goal is the development of regulations for the selection of woody plants to safely enhance the biodiversity of protective forest plantations in the steppe and semi-desert.
It was revealed that the cluster dendrological sites of the Federal Scientific Centre of Agroecology, Complex Melioration and Protective Afforestation of Russian Academy of Sciences (FSC of Agroecology RAS) serve as a testing ground with a controlled territory for safe testing of plants. The object of research was 600 taxa, of different geographical origin and age. For defensive forest plantations of degraded ecosystems (Volgograd, Samara Oblast) 168 species of trees and shrubs are recommended.
The results of studies of generic complexes are the basis for the scheme for analyzing the prospects of woody plants and for selecting an economically important range. In dry steppe conditions, economically important groups from families Rosaceae, Caprifoliaceae, Oleaceae, Fabaceae are recommended for increasing biodiversity. The regulation includes the creation of a stock of planting stock. It is based on ecological compatibility, economic suitability, innovative assortment.
Monitoring of experimental populations forming a self-seeding was carried out. In arid conditions, safe methods of reproduction of woody plants have been identified. An algorithm for quantitative and qualitative improvement of the assortment of woody plants has been developed to select the best possible option and the criteria for regulating the sustainable use of the biodiversity of woody plants. They include introduction, selection, seed production and tested at the sites of the study area.
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