%0 Journal Article %T To the problem of increasing stability of plantations of Voronezh upland oak forests %A Furmenkova, E.S. %A Kochergina, M.V. %A Tregubov, O.V. %K forest pathology condition, class of biological stability, forest health, resistance of stands, degradation of forest environment, pathological signs. %J Forestry Engineering Journal %D 2015 %N 5 %P 12 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov