Single and double entry tree volume table construction for Crimean pine (Pinus nigra Arnold) afforestation in Şehit Ali İhsan Kalmaz Forest

Abstract

In this study, the local single- and double-entry tree volume table was aimed to develop for Crimean pine (Pinus nigra Arnold) afforestations in Şehit Ali İhsan Kalmaz Forest. In this study, the data used were obtained from 97 sample trees. The available data for Crimean pine tree was split into two sets: the majority (%80) was used to estimate model parameters, and the remaining data (%20) were reserved to validate the models. Sample trees were measured at diameter breast height, height and stem volume of trees in stand. Single and double-entry tree volume table construction and methods based on statistical approaches, several regression models were tested. A total of 12 tree volume models were tested for single-entry (6) and double-entry (6) tables. The performance of the models was compared and evaluated with seven model performance criteria. According to performance criteria, the best results were obtained with Dissescu-Meyer and Spurr models, respectively. As a result, regional a single and double entry volume table was created for Crimean pine.

Keywords

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• karaçam
• pinus nigra
• tek ve çift girişli ağaç hacim tablosu