Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Aluminium toxicity in declining forests: general overview with a seasonal assessment silver fir forest in the Vosges mountains (France). | Ann Sci For 1994 51 27-51 Elsevier INRA 27 Review article Aluminium toxicity in declining forests a general overview with a seasonal assessment in a silver fir forest in the Vosges mountains France JP Boudot T Becquer D Merlet J Rouiller CNRS Centre de Pédologie Biologique UPR 6831 associated with the University of Nancy I 17 rue Notre-Dame-des-Pauvres BP 5 54501 Vandceuvre-lès-Nancy France Received 22 June 1993 accepted 4 September 1993 Summary A general overview on Al toxicity to plants is given including the following aspects symptoms mechanisms mitigating environmental factors and diagnostic possibilities. An Al toxicity index is proposed to replace the classical but poorly performant Ca AI ratio and is used in a declining fir stand in the Vosges mountains eastern France . A potential Al toxicity phase was observed in winter only namely during the vegetation rest phase. As nutrient uptake is expected to be potentially low during this season this finding suggests that Al toxicity is probably not strongly involved in the local forest decline. However a low influence may occur with respect to the winter growth of mycor-rhized fine roots. aluminium toxicity aluminium speciation I acid rain forest decline Resume La toxicité de I aluminium dans les forets dépérissantes. Connaissances generates et application au cas d une sapintere vosgienne. Les auteurs passent en revue les princi-pales connaissances portant sur la toxicité de I aluminium vis-à-vis des végétaux. Un index de toxlci-té aluminique est propose en remplacement de I habituel rapport Ca Al très insuffisant. Son application au cas d une saplnière dépérissante des Vosges permet de mettre en evidence I exis-tence d une phase de toxicité aluminique potentielle en hiver. Les besoins en nutriments étant très faibles durant cette saison cette phase n a probablement qu une influence mineure sur 1 état dépé-rissant du peuplement. Un faible impact pourralt néanmoins être envisage dans 1 éventualité OÙ les essences .
