Comparison of tree volume equations for brutian pine stands in Eğirdir district
In this study, tree volume equations have been developed for Brutian pine (Pinus brutia Ten.). The data was obtained from the natural brutian pine stands in Eğirdir region. Totally of 405 trees are sampled and randomly separated into the two groups. Since there is no real independent dataset, two-fo...
Main Authors: | , |
---|---|
Format: | Article |
Language: | English |
Published: |
Isparta University of Applied Sciences Faculty of Forestry
2019-09-01
|
Series: | Turkish Journal of Forestry |
Subjects: | |
Online Access: | https://dergipark.org.tr/tr/pub/tjf/issue/49158/566019?publisher=iubu |
id |
doaj-0b7cde2b41614349b8599357f28d2854 |
---|---|
record_format |
Article |
spelling |
doaj-0b7cde2b41614349b8599357f28d28542020-11-25T02:39:50ZengIsparta University of Applied Sciences Faculty of ForestryTurkish Journal of Forestry2149-38982019-09-0120314915610.18182/tjf.5660191656Comparison of tree volume equations for brutian pine stands in Eğirdir districtRamazan ÖZÇELİK0Hakkı ALTINKAYAIsparta Uygulamalı Bilimler Üniversitesi Orman fakültesiIn this study, tree volume equations have been developed for Brutian pine (Pinus brutia Ten.). The data was obtained from the natural brutian pine stands in Eğirdir region. Totally of 405 trees are sampled and randomly separated into the two groups. Since there is no real independent dataset, two-fold evaluation scheme was applied and the prediction performance of 18 models was evaluated. For this purpose, four different criteria values were used: mean error (MD), mean absolute error (MAD), coefficient of determination (R2) and root mean square error (RMSE). The prediction performances of the models were evaluated on the basis of relative ranking. As a result of the evaluations, the most successful results were obtained with Model 4, while the most unsuccessful results were obtained with model 6. The obtained results suggested that Model 4 should be used to more reliable volume predictions for natural brutian pine stands in Eğirdir Regionhttps://dergipark.org.tr/tr/pub/tjf/issue/49158/566019?publisher=iububrutian pinevolume predictionnonlinear modelsdiameterrelative rankkızılçamhacim tahmininonlinear modelsçapnisbi sıra |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Ramazan ÖZÇELİK Hakkı ALTINKAYA |
spellingShingle |
Ramazan ÖZÇELİK Hakkı ALTINKAYA Comparison of tree volume equations for brutian pine stands in Eğirdir district Turkish Journal of Forestry brutian pine volume prediction nonlinear models diameter relative rank kızılçam hacim tahmini nonlinear models çap nisbi sıra |
author_facet |
Ramazan ÖZÇELİK Hakkı ALTINKAYA |
author_sort |
Ramazan ÖZÇELİK |
title |
Comparison of tree volume equations for brutian pine stands in Eğirdir district |
title_short |
Comparison of tree volume equations for brutian pine stands in Eğirdir district |
title_full |
Comparison of tree volume equations for brutian pine stands in Eğirdir district |
title_fullStr |
Comparison of tree volume equations for brutian pine stands in Eğirdir district |
title_full_unstemmed |
Comparison of tree volume equations for brutian pine stands in Eğirdir district |
title_sort |
comparison of tree volume equations for brutian pine stands in eğirdir district |
publisher |
Isparta University of Applied Sciences Faculty of Forestry |
series |
Turkish Journal of Forestry |
issn |
2149-3898 |
publishDate |
2019-09-01 |
description |
In this study, tree volume equations have been developed for Brutian pine (Pinus brutia Ten.). The data was obtained from the natural brutian pine stands in Eğirdir region. Totally of 405 trees are sampled and randomly separated into the two groups. Since there is no real independent dataset, two-fold evaluation scheme was applied and the prediction performance of 18 models was evaluated. For this purpose, four different criteria values were used: mean error (MD), mean absolute error (MAD), coefficient of determination (R2) and root mean square error (RMSE). The prediction performances of the models were evaluated on the basis of relative ranking. As a result of the evaluations, the most successful results were obtained with Model 4, while the most unsuccessful results were obtained with model 6. The obtained results suggested that Model 4 should be used to more reliable volume predictions for natural brutian pine stands in Eğirdir Region |
topic |
brutian pine volume prediction nonlinear models diameter relative rank kızılçam hacim tahmini nonlinear models çap nisbi sıra |
url |
https://dergipark.org.tr/tr/pub/tjf/issue/49158/566019?publisher=iubu |
work_keys_str_mv |
AT ramazanozcelik comparisonoftreevolumeequationsforbrutianpinestandsinegirdirdistrict AT hakkıaltinkaya comparisonoftreevolumeequationsforbrutianpinestandsinegirdirdistrict |
_version_ |
1724784566665740288 |