Abstract
An indicator of site productivity and quality was provided for mixed, uneven-aged natural stands of southern Appalachian red spruce ( Picea rubens Sarg.). A set of anamorphic site index curves was developed and validated using the Meyer (1940) nonlinear function using diameter at breast height as a predicting variable. The coefficient of determination for the base curve was good ( R 2 = 0.626) and no consistent bias was detected. Average site quality index decreased with increasing elevation. Site index was highest in pure spruce stands but decreased with increasing elevation and/or increasing Fraser fir ( Abies fraseri (Pursh) Poir.) or yellow birch ( Betula lutea Michaux f.) component.
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