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1 December 2005 Some Geometric Constraints on Ring-Width Trend
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Abstract

Simulations of tree rings from trees of undisturbed forest sites are used to describe natural, long-term width trends. Ring-width trends of canopy-sized white oak are simulated from regressions of BAI (ring area) data of real trees. Examples are given of a tree from a typical re-growth forest in Illinois and of a more slowly growing tree from an old-growth forest in Kentucky. The long-term width trend was simulated as being toward constant ring width regardless of growth rate of the tree. Conditions by which either increasing or decreasing ring-width trends could be simulated from the same linear BAI trend are examined. I conclude that curvilinear width trends, either increasing or decreasing, represent width adjustments to changes in growth rate (BAI trend) after which the width trend stabilizes to a near-constant value. Interpretation of ring-width trends of trees from undisturbed stands may be useful in assessing stand disturbance history.

Richard L. Phipps "Some Geometric Constraints on Ring-Width Trend," Tree-Ring Research 61(2), (1 December 2005). https://doi.org/10.3959/1536-1098-61.2.73
Received: 10 February 2004; Accepted: 1 July 2005; Published: 1 December 2005
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