Growth intercept models relate early average height growth of trees (the growth intercept) to site index (top height at breast-height-age 50). Typically, the growth intercept is the average height-growth during the first five growing seasons after the tree has reached breast height. This report presents a variable-growth intercept model that is based on the average height growth above breast-height for any number of years from 1 to 30. This model is more flexible than growth intercept models that use a fixed-growth period such as five years. The variable-growth intercept model has many advantages and few disadvantages over the traditional fixed growth intercept models.
Nigh, G.D.. 1995. Variable growth intercept models for lodgepole pine in the sub-boreal spruce biogeoclimatic zone, British Columbia. British Columbia Ministry of Forests, Lands, Natural Resource Operations and Rural Development. Research Report (FLNRORD). RR2
Topic: FLNRORD Research Program
Keywords: Growth, Yield
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