Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài:"Micronutrients in biomass fractions of holm oak, beech and fir forests of the Montseny massif (Catalonia, NE Spain). | Ann Sci For 1990 47 345-352 Elsevier INRA 345 Original article Micronutrients in biomass fractions of holm oak beech and fir forests of the Montseny massif Catalonia NE Spain A Caritat J Terradas CREAF Facultat de Ciồncies Universitat Autònoma de Barcelona 08193 Bellaterra Barcelona Spain Received 24 July 1989 accepted 28 February 1990 Summary - This study is part of a larger research programme on different forest ecosystems in the Montseny massif Barcelona NE Spain . The contents of 4 micronutrients Mn Fe Zn and Cu are given for some biomass fractions in individual monospecific stands of holm oak Quercus ilex L beech Fagus sylvatica L and fir Abies alba . The behaviour of different micronutrients is related to relative mobility. Mn Fe and Zn concentrations increase with leaf age. Nutrient levels of the Montseny stands are compared with those found in other forests of the same species. We have observed relatively high Mn concentrations in different biomass fractions of the holm oak forest studied. This can be related to the low soil pH values. Our 3 forests show different micronutrient allocational patterns. Total quantities of the micronutrients In the biomass are only calculated for Q Hex forest. Values found are kg Mn ha kg Fe ha kg Zn ha and kg Cu ha. biomass fraction micronutrient Quercus ilex I Fagus sylvatica Abies alba Résumé - Elements traces dans la biomasse de la chênaie de la hêtraie et de la sapinière du massif de Montseny. Ce travail fait partie d une étude sur les differents écosystèmes forestiers du massif de Montseny Barcelone NE Espagne . La composition en Mn Fe Zn et Cu de diffdrents compartiments de la biomasse est analysée pour des parcelles monospéciỉiques de chêne vert Quercus ilex de hêtre Fag US sylvatica et de sapin Abies alba . Les concentrations en Mn Fe et Zn augmentent au cours du vieillissement de la feuille. Les niveaux de ces concentrations ont été comparés pour les espèces correspondant à celles d autres torêts.
