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A Graphical Comparison of Loblolly Pine Growth-and-Yield Models

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Foresters have come to rely on growth-and-yield simulators when making management decisions extending decades into the future. The importance of obtaining reliable estimates of growth-and-yield projections is apparent, hence evaluating and selecting an appropriate simulator can be challenging. One way to evaluate growth-and-yield models for prospective applications is by examining how model predictions adhere to basic expectations of biological growth. We compared five computer growth-and-yield simulators for loblolly pine (Pinus taeda L.) using relationships depicted in Leary's 1997 lower triangular matrix of stand property interdependence. The graphical comparison of common loblolly pine growth-and-yield simulators indicates how model predictions adhere to current conventional wisdom concerning biological growth in forest stands. The basic principles of property interdependence are generally evident in the computer growth-and-yield simulators with, however, notable differences because some model results deviate from the expected “biological behavior.”

Keywords: forest growth models; growth-and-yield simulators; stand property interdependence

Document Type: Research Article


Publication date: 2013-08-01

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  • Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
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