Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: Simulation and comparison of silvicultural alternatives for even-aged Pinus pinaster Ait stands in Galicia (Northwestern Spain). | 747 Ann. For. Sci. 57 2000 747-754 INRA EDP Sciences Original article Simulation and comparison of silvicultural alternatives for even-aged Pinus pinaster Ait stands in Galicia Northwestern Spain Roque Rodríguez Soalleiroa Juan Gabriel Alvarez Gonzaleza and Jorg Schroderb a Escuela Politécnica Superior de Lugo Universidad de Santiago de Compostela Campus Universitario S N 27002 Lugo Spain b Georg-August-Universitat Gottingen Institut fur Forsteinrichtung und Ertragskunde Busgenweg 5 37077 Gottingen Germany Received 30 November 1999 accepted 19 April 2000 Abstract - Three silvicultural alternatives for pure even-aged stands of maritime pine Pinus pinaster Ait grown in Galicia Northwestern Spain are simulated and compared. First each silvicultural alternative is described by a specific combination of initial stand-density pre-commercial treatment thinning pattern and rotation age. The development of each silvicultural alternative is simulated using a regional growth and yield projection system based on a dynamic stand growth simulator and a size class model for representative trees. Different timber grades associated with each alternative are predicted and estimates of costs and selling prices are used to predict a cash flow pattern for each of the simulated alternatives. Finally the alternatives are ranked using the criteria net present value of an infinite series of like rotations and internal rate of return. For the present market conditions the most intensive silvicultural alternative is the most desirable one if profit maximization is the objective of forest management. Pinus pinaster Ait silviculture Galicia growth and yield modelling Résumé - Simulation et comparaison de regimes sylvicoles pour des forêts régulières de Pinus pinaster Ait. en Galicie Nord-Ouest de l Espagne . Trois alternatives de sylviculture pour peuplements purs et réguliers de pin maritime Pinus pinaster Ait en Galicie NO de l Espagne sont simulées et comparées. Chaque alternative est .
