Abstract
Measurements of open-grown balsam fir and white spruce disclosed a high degree of correlation between width and d.b.h. for a given species. From this relation, Crown Competition Factor (CCF) values were applied to even-aged balsam fir stands of various ages and site indices, and related to other measures of stand density. These preliminary trials indicate that the CCF is a good measure to express the density of even-aged balsam fir stands, but its value will be further stressed if it can be successfully correlated with growth and yield.
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