СУЧАСНИЙ ФІТОСАНІТАРНИЙ СТАН СОСНОВИХ ЛІСІВ ЗАХІДНОГО ПОЛІССЯ ТА ЇХНЄ МАСОВЕ ВСИХАННЯ: АНАЛІТИЧНА ДОВІДКА

Анотація

THE MODERN PHYTOSANITARY CONDITION OF PINEWOOD
FORESTS IN WEST POLISSYA AND THEIR LARGE-SCALE WITHERING:
ANALYTICAL REFERENCE
V. Borodavka, O. Borodavka, A. Getmanchuk, T. Bortnik,
O. Kychylyuk
Abstract. The article presents the results of three-year research of
withering pine stands in Polissya. Typical trends of the distribution of current
sharp withering are described, depending on the taxation characteristics of
forests. It was discovered that the pine trees large-scale withering up to the 

medieval woodlands, with one species in composition, high classes of quality
of locality, with low density, growing in the optimal and most common for this
wood species types of forest conditions – fresh and moist subor. Attention is
accented, that in 2017, the displacement of the range of damage was recorded
in the direction of other age groups, high-density forest stands, etc.
It diagnosing in the pine forests the distribution of aggressive
xylophages associations and ophiostamoid fungi causing rapid large-scale
withering of stands. It is noted that the main agent of the defeat – apical bark
beetle (Ips acuminatus Gyll.). Has changed the way of attack on the
concentrated, which leads to the defeat of the most liveliest trees and the
formation of the immediately burial and large-sized sources of reproduction of
beetles.
Conclusion is made on the further development of the withering of
xylophago-ophiostamoid origin. It is expected that during the year the area of
affected forests will increase by 2.5-3 times. In the long run, the cardinal
change in the age structure of the Polissya pine forest and their species
transformation is projected.
Keywords: apical bark beetle (Ips acuminatus Gyll.), withering of
stands, xylophages, ophiostamoid fungi, pathological processes of forest,
common pine (Scots).