To question of accelerated formation in the Western Siberia of target designs of the cedar pine forests on the zonal-typological basis

Zone-typological features of cedar forests were studied based on the materials of the forest management of theKhanty-Mansi and Yamal-Nenets Autonomous Districts. The analysis of the data showed that in the taiga zone ofWestern Siberia, more than 30 types of forest are included in the 6 groups. The most widespread and significantin economic terms is the plantation of cedar, which belong to the green mosses group of forest types. On trial plotsof the Khanty-Mansiysk Autonomous Okrug and Tomsk Oblast, the growth of crops and undergrowth as well as thenut productivity of pine cedar were determined. Experiments on removal of birch and aspen by arboricides werecarried out in the Tyumen region and the Khanty-Mansiysk Autonomous Okrug. Optimal conditions for the growthof cedar are added under full illumination. Accelerated formation of nut-bearing stone pine forests is promising inherbage, grass-floodplain, green-moss groups of forest types in the southern and middle taiga, reducing by 5-10times the period of oppressed cedar growth under the canopy of deciduous plantations. The cutting of the mater-nal stand is more actively responded to by adolescents 1–3 m in height. Thin young growth, more than 5 m in height,is prone to damage by wind. It is established that for clarification of cultures and natural growth of cedar, birch andaspen shoots are effectively sprayed in August with glyphosate derivatives (doses 6,0–8,0 l/ha) or dried by injec-tion into barrels of arboricides. Radical acceleration of the onset of seed formation in cedar is achieved by graftingcuttings into crones of cedar youngstocks from positive seed-bearing trees. This made it possible to obtain pinenuts from the age of 20–25 years old and to reduce to a minimum the years with poor harvest. Low-productive darkconiferous plantations of forest-tundra and northern taiga, lichen and sphagnum stone pine forests of the moresouthern subzones are recommended to be used for protection of water objects and environmental protection pur-poses.