出版社：Výzkumný Ústav Lesního Hospodárství a Myslivosti
摘要：Accumulation of aboveground biomass of ca 20 years old blue spruce (BS) substitute tree stand was studied in the Jizerské hory Mts., Czech Republic. Dry matter of the average BS tree was almost half of its fresh weight; maximal relative content of the nutrients was accumulated in annual needles and minimal in stem wood. Similarly, annual needles contained maximum nutrients of the forest stand, less elements was in mass branches in bark, stem bark and minimum in stem wood. Limit nutrient of the extremely poor site was phosphorus. Thinning with whole tree logging would bring substantial site deprivation, acceptable compromise could be logging of timber to the top of 7 cm o. b. only.
