Efficiency of intraspecific forms of aspen in connection with defeat by their heart-shaped decay

Rticle contains the ratio analysis on color of various intraspecific forms of an aspen growing in aspens forest stands of the Ulyanovsk region. Extent of defeat of forest stands of different clones of an aspen by heart-shaped decay depending on forest vegetation conditions and age of forest stands is defined. Influence of heart-shaped decay on an exit of business wood of an aspen depending on conditions of growth of forest stands was studied.