TAILIEUCHUNG - Báo cáo khoa học: "Site-specific height curves for white spruce (Picea glauca [Moench] Voss) stands based on stem analysis and site classification"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp quốc tế đề tài: "Site-specific height curves for white spruce (Picea glauca [Moench] Voss) stands based on stem analysis and site classification. | 607 Ann Sci For 1995 52 607-618 Elsevier INRA Original article Site-specific height curves for white spruce Picea glauca Moench Voss stands based on stem analysis and site classification GGWang1 KKIinka2 Department of Biology University of Winnipeg 515 Portage Avenue Winnipeg MB Canada R3B 2E9 2 Department of Forest Sciences University of British Columbia Vancouver BC Canada V6T 1Z4 Received 2 January 1994 accepted 15 May 1995 Summary Polymorphic height curves have been widely used to predict dominant stand height from site index or any known pair of height and age. To provide an alternative to this conventional approach height modelling was linked to site classification using stem analysis and site data obtained from 102 naturally established white spruce Picea glauca Moench Voss stands in the Sub-Boreal Spruce zone of British Columbia. The study stands were stratified according to their soil moisture aeration and nutrient regimes and a site-specific height curve was developed for each of the 7 delineated groups without using site index as a predictor. Although less precise the curves developed were comparable to the conventional height curves that use site index as a predictor. Testing against independent data indicated that the site-specific height curves were reliable and applicable over a large area of the sub-boreal forest for predicting dominant heights of white spruce stands. Picea glauca I height curve site-specific height curve I site classification Resume Courbe de croissance en hauteur de I epinette blanche Picea glauca Moench Voss par I utilisation de données d analyse de tige et de typologie des stations. L utllisation de courbes polymorphes de croissance en hauteur est très courante pour prédire la hauteur dominante d un peuplement connaissant un indice de fertilite OU un couple hauteur-âge. Nous proposons une alternative à cette methode en reliant directement un modèle de croissance en hauteur aux conditions de station parrutilisation de données d .

• 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