TAILIEUCHUNG - Báo cáo khoa học: "Influence of browsing cessation on Picea sitchensis radial growth"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Influence of browsing cessation on Picea sitchensis radial growth. | Ann. For. Sci. 58 2001 853-859 INRA EDP Sciences 2001 853 Original article Influence of browsing cessation on Picea sitchensis radial growth Bruno Vila Thierry Keller and Frédéric Guibal Institut Méditerranéen d Écologie et de Paléoécologie - CNRS UMR 6116 Case 451 Faculté des Sciences et Techniques de Saint-Jerome 13397 Marseille Cedex 20 Received 15 September 2000 accepted 18 January 2001 Abstract - Picea sitchensis is an ecological and economical component of North America north temperate rain forest. In Haida Gwaii which is one of the most productive forest land of British Columbia archipelago Canada it is an important and a valuable commercial species. The present study aims at precising deer browsing consequences on growth regeneration ofPicea sitchensis. Using ring-width series an empirical model is built which describes browsing impacton radial growth and removal of these pressure. Taking into account deer pressure and browsing upper limit when building predictive height growth models proves valuable for comparing growth pattern of different species under browsing pressure and deducing changes in forest dynamics. Picea sitchensis radial growth browsing modeling black-tailed deer Résumé - Influence de l arret de l abroutissement sur la croissance radiale de Picea sitchensis. Picea sitchensis est un composant majeurtant au niveau ecologique qu au niveau economique des forêts pluviales et tempérées de l Amerique du Nord. Sur l archipel Haida Gwaii qui est recouvert par une forêt des plus productive de Colombie Britannique Canada c est une essence à forte valeur com-merciale. La presente etude vise à préciser les consequences de l abroutissement par le cerf à queue noire sur la croissance des individus au cours de la regeneration. Sur la base de series d epaisseurs de cernes un modèle empirique de croissance radiale est construit. Il decrit l effet de l abroutissement et de la suppression de celui-ci lorsque les individus parviennent à depasser la limite .

• Báo cáo khoa học
• Báo cáo lâm nghiệp hay
• cách trình bày báo cáo
• báo cáo lâm nghiệp
• công trình nghiên cứu lâm nghiệp
• tài liệu về lâm nghiệp