Pinus Silvestris Root System in the North Taiga Zone

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UDС

674.032.475.4

DOI:

DOI: 10.17238/issn0536-1036.2016.1.55

Abstract

Pine can adapt to the different environmental conditions, developing deep and shallow root system. Data about the structure and development of pine root systems can improve the sil-vicultural, forestry and hydraulic treatment and identify the hazardous trees. Trees stability is related to the distribution of tree skeletal roots and their dimensions. The aim of the re-search was to study the pine root structure in the Arkhangelsk forestry (Arkhangelsk re-gion). The studies of the structure of the pine root system were carried out in the lichen, moss and lichen and bilberry pine forests. The root systems of the undergrowth and pine trees were studied by its partial or complete exemption from the soil. The fully developed taproot is formed in the lichen pine forest. In other types of forests the taproot has the excur-rent form (the form of a “radish”) or does not developed. The mature trees in the bilberry and moss and lichen pine forests do not have a taproot. In the process of the tree growing, it becomes a well-developed horizontal root and takes the horizontal direction. Up to 10 years of age the undergrowth root system develops identically in different types of forests. At old-er ages, the differentiation of structure and parameters of the root system occurs. It depends on the growing conditions. The excess of the vertical roots of a tree of more than 10-years-old indicates the diseases of a root system or a lower trunk. The vigor of the root layer in a bilberry pine forest more, but the depth penetration of the vertical roots and the radius of skeletal roots predominate in a lichen pine forest. Consequently, the tree stability in a lichen pine forest is formed due to the taproots and skeletal roots, in a bilberry pine forest – as a result of significant branching of vertical and horizontal roots. The high probability of the trees fall in a pine forest is associated not only with a shallow root system, but also with the development of its pathology.

Authors

O.N. Tyukavina, Candidate of Agricultural Sciences, Associate Professor V.N. Evdokimov, Candidate of Biological Sciences, Associate Professor

Affiliation

Northern (Arctic) Federal University named after M.V. Lomonosov, Naberezhnaya Severnoy Dviny, 17, Arkhangelsk, 163002, Russian Federation; е-mail: o.tukavina@narfu.ru

Keywords

Scots pine, root system, taproot, skeletal roots.

References

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Received on December 30, 2014