Caracteristici biometrice ale coroanelor arborilor de molid din arborete echiene de productivitate superioară [Biometrical characteristics of the Norway spruce crowns from even aged stands of high productivity]

Abstract

The paper presents the research results concerning the values of some parameters from Bucovina Forestierã XIII, 1-2 Articole de cercetare 12 Norway spruce stands from the Northern part of Eastern Carpathians (Suceava County). Were analyzed sample plots and sample trees from even aged stands of high productivity resulted from plantations, of 30, 50, 70 and 90 years. The main parameters presented were: percent of the trees, crown form and dimensions, green crown length, crown volume, crown weight and specific weight, green crown density, weight of the main crown components (needles, branches with needles, and branches without needles) in relation with stand age, Kraft classes and crown portion (upper, middle, lower). Information about the relative position of the crown weight center (as % from height) is provided too. For some of these characteristics, linear models (regressions with DBH and height) are presented

Keywords

• Norway spruce
• Kraft classification
• crown class
• crown volume
• crown density