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Methods for determining the accuracy and comparing the agreement between ground measures and advanced forest inventory techniques

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Two critical questions often arise in forest management pertaining to the accuracy and suitability of any new forest inventory technique at the tree or stand level: how can we judge whether a new... More ≫

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Two critical questions often arise in forest management pertaining to the accuracy and suitability of any new forest inventory technique at the tree or stand level: how can we judge whether a new inventory technique is valid or of acceptable accuracy; and how can we compare if a new inventory technique agrees with or is better than an existing one. This technical document describes the procedures and the statistical methods that collectively provide the tools to address and answer these questions.

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Growth intercept models for assessing the site potential of young lodgepole pine stands in Alberta

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Forest management practices related to tree harvesting and regeneration in Alberta have historically attempted to replicate the effects of natural disturbance patterns. In order to maintain a... More ≫

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Forest management practices related to tree harvesting and regeneration in Alberta have historically attempted to replicate the effects of natural disturbance patterns. In order to maintain a sustained yield, and an ecosystem based sustainable forest management practice that aims at duplicating or potentially exceeding natural forest yields, and that emphasizes the maintenance of diversity among forest types, an assessment of the regeneration performance on the harvested areas is required. This assessment includes the quantification of regenerated site potentials, as commonly measured by site index. Growth intercept models were developed in this study to estimate site index based on a few years of juvenile height growth above a conveniently selected base height. In addition to being able to be used to predict site index in juvenile stands, these growth intercept models can also be used as the basis for projecting regenerated yields, evaluating silvicultural alternatives, and...

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