Zwiazek biezacego przyrostu miazszosci sosny z wybranymi cechami biometrycznymi

Usefulness of eight biometric characteristics for determining the volume increment of standing trees is evaluated. The study material consisted of the results of complete stem analyses of 164 trees from the upper layer of 56 pine stands of age class V and older. They concerned a 56-year period from 16 th to 80 th year of trees' life divided into thirteen 5-year periods. It was found that the variation of the volume increment of trees is explained in 83.2-94.7% by the variation of the height, basal area, and the basal area increment. These characteristics were used in working out the equations permitting to compute the volume increment.