PL
W pracy oceniono tendencję przyrostową badanych drzewostanów. Określono wpływ wybranych cech morfologicznych korony, żywotności, jakości pnia oraz masy systemu korzeniowego na wielkość 10-letniego przyrostu pola powierzchni przekroju pierśnicowego świerka i modrzewia.
EN
Increment tendencies of the investigated spruce and larch stands were estimated in the work. The effect of selected morphological traits of the crown, vitality, trunk quality, and weight of the root system on increases in the radius at diameter breast high of spruce and larch was determined. In spruce stands 15 permenent sample plots were established and dependences occuring in these stands were analysed in older age class IV and higher ones and younger (age class III) objects. In larch stands 7 study areas were located. The obtained results show that in younger spruce stands the increment is charakterized by a decreasing tendency. Older spruce trees efficiently resist the tendency to increment decreases he I o w the tabular values.