TAILIEUCHUNG - Báo cáo lâm nghiệp: "Experimental research in ageing holm oak (Quercus ilex L.) coppices: preliminary results"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Experimental research in ageing holm oak (Quercus ilex L.) coppices: preliminary results. | Ann. Sci. For. 55 1998 46 W76 Inra Elsevier Paris 461 Original article Experimental research in ageing holm oak Quercus ilex L. coppices preliminary results Orazio la Marca Pasquale A. Marziliano Nicola Moretti Istituto di Assestamento e Tecnologia forestale IATF Università di Firenze Via s. Bonaventura n 13 -1-50145 Florence Italy Received 23 September 1996 revised 9 January 1997 accepted 17 September 1997 Abstract - The initial data of a long-term research programme aimed at determining the silvicultural choices for management of ageing holm oak coppices are reported. The various treatments being tested are the following treatments A and B respectively with 50 and 250 reserve trees per hectare all of the same age treatment c with 140 reserve trees per hectare with three different ages treatment D conversion into high forest and treatment E natural evolution the control . A total of 15 permanent plots were established five treatments X three replicates and the experimental design used is that of randomized blocks. The results presented regard the structural development of the coppice during the first 2 years after coppicing. Regeneration from seed showed a significant correlation with treatment. Data relative to the characteristics of the stands existing before the various interventions also are given. Such preliminary results need further periodical observations. Inra Elsevier Paris. Quercus ilex L. coppice regeneration cutting method snow breakage Resume - Experimentation concernant les taillis vieillis de chêne vert Quercus ilex L premiers résultats. Les résultats obtenus et ici présentés font partie d un projet de recherche dont I intention est d individualiser des possibles options de culture pour les taillis de chêne vert vieillis. On a confronte les cinq theses suivantes avec trois repetitions les theses A et B avec respect vement 50 et 250 reserves par hectare ayant toutes le même âge la these c avec 140 reserves par hectare ayant trois ages differents la

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