Site Index Evaluations in a 100-Year-Old Eastern White Pine Plantation at the Biltmore Estate, NC
The precision of these equations for estimating site index and the effects of four topographic variables on total height were evaluated in a 1.6-acre planted stand of 100-year-old eastern white pines (Pinus strobus L.) on the Biltmore Estate near Asheville, NC. A polymorphic site index equation developed for the Southern Appalachian Mountains was only slightly more precise than a polymorphic equation developed for New Hampshire and an anamorphic equation developed for Wisconsin. A regression model that induded age alone explained 72 percent of variation assodated with stand total height. The inclusion of four significant topographic variables increased the explained variation to 91 percent.