The Dimensions and Distribution of Wood Rays in Oak Wood (Quercus petraea Liebl.) in Relation to Biosociological Class of the Trees

1990

S. 97-111

6 Abb., 4 Tab., 31 Lit. Ang.

Unselbständiges Werk

200048851

The variability of dimensions and spacing of narrow and broad oak tree rays depending on the ray and height of trees in different biosocial classes were investigated. The variability of height of both narrow and broad rays is great. The variability of width of the tree rays is considerably smaller. There is a linear relation between the height of narrow rays and the number of constituting cells. The number of the narrow rays decreases with the distance from core along exponential curve. The number of the broad rays along the ray remains practically unchanged. With lowering of biosocial class of trees there is a tendency to, among others, decrease, the height and the number of the narrow rays and to increase the height of the broad ones.