THE INFLUENCE OF ENVIRONMENTAL CONDITIONS ON PHENOTYPIC TRAITS OF SPRUCE (Picea abies [L.] Karst)
Abstract
Norway spruce (Picea abies L. Karst.) is one of the most important species among conifers in Europe, which provide valuable raw material for forest industries and also plays an important role in the society and economy. Therefore, the main objective of this study was to monitor the influence of environmental conditions (climatic and soil conditions) upon diverse phenotypic traits of spruce trees (height, diameter, canopy diameter) from four seed preserves situated in different parts of Romania, including the Counties of Bistrița-Năsăud, Maramureș, Harghita and Suceava. For this purpose, the weather conditions were recorded and four different soil profiles were evaluated.The results show that, when temperature and precipitation values together with soil type and profile thickness are in accordance with spruce growth conditions, the phenotypic traits reach their optimum. Therefore, the highest values for tree height (36,63 m), tree diameter (46,53 cm) and average tree volume (2,57 m3) were recorded in Măria Mică on Eutricambosol soil type on 92 cm soil profile thickness, followed by Făina location were Districambosol was determined in depth of 105 cm. preserve.
Copyright (c) 2022 I. Păcurar, Steluța-Maria Sîngeorzan , L. Holonec, A. M. Truță, I. M. Morar, H. D. Vlașin, A. Colișar, O. Borsai, V. Pleșa, C. Negrușier
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