Research Branch

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Site index conversion equations for mixed species stands

Author(s) or contact(s): G.D. Nigh
Source: Research Branch
Subject: Growth and Yield
Series: Research Report
Other details:  Published 1995. Hardcopy is available.


Models are developed to predict the site index of one species in a mixed stand from the site index of a cohort. These models are applicable to site quality evaluation, growth and yield modelling, and timber management planning. A single-equation compatible site index conversion system is developed using the geometric mean regression (GMR) line for the following species mixes: coastal Douglas-fir/western hemlock; interior Douglas-fir/lodgepole pine, Douglas-fir/white spruce, Douglas-fir/western hemlock, Douglas-fir/western larch, white spruce/lodgepole pine, white spruce/subalpine fir, lodgepole pine/subalpine fir, and lodgepole pine/western larch.

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Updated October 24, 2008