Volume equations for natural Taurus cedar stands in West Mediterranean Region

Abstract

Taurus cedar (Cedrus libani A. Rich.) is one of the most important tree species in Turkey. Therefore, the information is necessary about growth and yield of the species for developing future management and planning strategies. The one of the essential building blocks in forest growth and yield prediction models is the equations for estimating individual tree volume. In this study, tree volume equations were developed for Taurus cedar stands in West Mediterranean Region. The tested models were compared using six performance criteria (Fit index, average bias, average absolute residuals, absolute maximum bias, and Akaike Information criteria) for model development and validation dataset. According to relative ranks of models, the best volume equations are Takata (1958) and Schumacher-Hall (1933) for Taurus cedar. As a result, tree volume can be estimated with high precision using Schumacher-Hall (1933)’s equation for natural cedar stands in this region.

Keywords

• taurus cedar
• volume equation
• diameter
• height
• relative rank
• sedir
• hacim denklemi
• göğüs çapı
• boy
• nisbi sıra