A Merchantable and Total Height Model for Tree Species in Maine

Autor:	James A. Westfall, Kenneth M. Laustsen
Rok vydání:	2006
Předmět:	Tree (data structure) Geography Species groups General Materials Science Forestry Plant Science Predictor variables Site tree Nonlinear mixed effects model Tree species Tree measurement
Zdroj:	Northern Journal of Applied Forestry. 23:241-249
ISSN:	1938-3762 0742-6348
Popis:	A model for predicting merchantable and total tree height for 18 species groups in Maine is presented. Only tree-level predictor variables are used, so stand-level attributes, such as age and site quality, are not required. A mixed-effects modeling approach accounts for the correlated within-tree measurements. Data-collection protocols encompass situations in which merchantability to a specified top diameter is not attained due to tree characteristics. The advantage of using the height prediction model over taper-derived estimates of merchantable height is demonstrated.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e6df37a2c5a8282866c87cab57a387dd https://doi.org/10.1093/njaf/23.4.241 Zobrazit plný text záznamu