GROWTH OF LARCH CROPS ON CRYOLOTHOZONE YAKUTIA
L. P. Gabysheva, A. P. Isaev
The Yakut Scientific Centre of the Siberian Branch of the Russian Academy of Sciences, Institute for Biological Problems of Cryolithozone, Russian Academy of Sciences, Siberian Branch, Yakutsk, Russian Federation
Keywords: artificial reforestation, Larix cajanderi, seedlings, permafrost, Central Yakutia
Abstract
The article deals with the issues of artificial reforestation on the burnt areas in the permafrost zone of East Siberia (Yakutia). Scientifically substantiated work on forest plantations in Yakutia has not been carried out before this work. The results of long-term observations of larch crops, which were carried out on the territory of the Megino-Kangalassky forestry of the Republic of Sakha (Yakutia), are summed up. Artificial reforestation was carried out with of Kayander larch ( Larix cajanderi Mayr) seedlings. The article also presents and analyzes all the experiences of creating forest plantations recorded in various sources, carried out in the republic in different years. An analysis of the growth and development of larch plantation is given, an estimate of survival rate for 8 years is given. In the first years after planting, seedlings adapt to new environmental conditions, starting from the third or fourth year after planting, there is an increasing growth of seedlings, and from 15-20 years, the growth of larch crops is intensified. The characteristics of the vegetation in the area of artificial reforestation and in the control are given. For twenty years, significant changes in the vegetation cover have been traced: from meadow-forb to forest vegetation. The materials of the article can be the basis for the development of the most promising technologies for reforestation in the permafrost zone and will make it possible to achieve high-quality reforestation during artificial and combined reforestation in the light of recent changes in forest legislation.
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