Ecological features of the CIRCUMPOLAR AREA disturbed lands restoration when using plant communities in the Tyumen region

This paper provided research on the restoration of disturbed lands in the circumpolar area using plant communities in the Tyumen Region. The opening up and development of the circumpolar and polar zones of the Tyumen Region has been carried out for 60 years. Construction is underway and dozens of cities, hundreds of villages, many industrial facilities have been built, thousands of kilometers of pipelines have been laid. As a result of these constructions, the vegetation of the tundra and forest-tundra was destroyed over vast areas, and the bottom of the ancient ocean was opened. Work to restore the soil and vegetation cover of the lands of the Far North, carrying out biological reclamation, is a new and rather complex matter. The goal of our research was to develop a technology for biological land reclamation using perennial grasses, peat and fertilizers for given conditions. Work to restore disturbed lands was carried out in the permafrost zone of the subpolar and polar zones of the Tyumen Region. The natural and climatic conditions of the territory are characterized by a long eight-month winter with little snow and a short summer with cold winds, mainly from the north. Experimental tests on biological land reclamation were carried out near the city of Novy Urengoy, subpolar zone, in a quarry adjacent to gas processing complex № 6. According to observation data over three years of research, at a peat application rate of 1.0 thousand m3/ha, the yield in the control variant was 17.1 c/ha. With a minimum dose of flour of 2 t/ha, the dry matter yield reached 22.9 c/ha. When the dose of dolomite flour was increased to 4–8 t/ha, the yield of dry mass of perennial grasses was 23.4–23.7 c/ha. These experiments need to be continued.