THE ESTIMATE OF CEDAR FORESTS OF THE WEST SIBERIAN PLAIN

Никита Михайлович ДЕБКОВ

Abstract


Introduction.  In the year of Ecology the Ministry of Nature and Ecology of the Russian Federation issued a new regulatory and legal act, regulating the harvesting of timber. The decision to cut down Cedar forests with a share of Pinus sibirica in the composition of stands 25-44% was one of the most significant innovations. However, this decision was canceled under public pressure. The aim of the research was to evaluate the species, age and typological structures of the plain cedar forests of the southern and middle taiga of Western Siberia. Objects and methods. The studies were conducted in Pervomayskiy and Verkhneketskiy forestries of the Tomsk region. The method of work consisted in sampling the characteristics of stands with the participation of Pinus sibirica from materials of Russian forest inventory. 4,680 stands were analyzed on a total area of more than 83,000 hectares. Results. Cedar forests of the southern and middle taiga of the West Siberian Plain are 64% and 51% respectively represented by mixed stands with a share of Pinus sibirica 3-4 units. In the middle taiga, mossy cedar forests are absolutely dominant, especially in the stands with a predominance of Pinus sibirica (from 5 units). At the same time, in the southern taiga such stands are half-sphagnum cedar forests, which are classified to minus stands in accordance with the selection estimate. Conclusion. Cedar  forests of the West Siberian Plain have specific zonal features, and require a differentiated approach to conducting economic activities. In any case, the cutting of Pinus sibirica in the southern taiga is unacceptable.


Keywords


cedar forests; southern taiga; middle taiga; Western Siberia; forest types; age structure; species composition

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