Volume equations for Scots pine trees in Kastamonu region

Fadime Sağlam

Makale detayları

Volume equations for Scots pine trees in Kastamonu region

Yazarlar:

Fadime Sağlam

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Orman Biyometrisi

Dergi:

Turkish Journal of Forestry Vol.25 Issue 4, pp.430-436

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001336548

pISSN:

2149-3898

Anahtar kelimeler:

Özet:

 The objective of this study is to develop tree volume equations for Scots pine trees in the Kastamonu region and to compare the prediction capability of these equations with existing tree volume equations. For this purpose, stump diameter, diameter at breast height, diameters in each meter up to the top of the tree, and tree height measurements were measured on 127 sample trees from the Kastamonu Forest Enterprise in the Kastamonu Regional Directorate of Forestry. Subsequently, tree volumes were calculated based on these measurements and using the sectional method. This method entailed volumizing the trees in three sections: the stump section, the top section and the one-meter sections between the stump and the top sections. To develop single- and double-entry tree volume equations, the parameters of eight volume equations were estimated. Four statistical criteria were employed to identify the best predictive models. The coefficients of determination for the best predictive single- and double-entry models were found to be 0.972 and 0.975, respectively. Additionally, the results of these models were compared with the volume predictions derived from four models presented in the literature. The results of this study will enhance the accuracy of tree volume estimation for Scots pine stands in the Kastamonu region.

 The objective of this study is to develop tree volume equations for Scots pine trees in the Kastamonu region and to compare the prediction capability of these equations with existing tree volume equations. For this purpose, stump diameter, diameter at breast height, diameters in each meter up to the top of the tree, and tree height measurements were measured on 127 sample trees from the Kastamonu Forest Enterprise in the Kastamonu Regional Directorate of Forestry. Subsequently, tree volumes were calculated based on these measurements and using the sectional method. This method entailed volumizing the trees in three sections: the stump section, the top section and the one-meter sections between the stump and the top sections. To develop single- and double-entry tree volume equations, the parameters of eight volume equations were estimated. Four statistical criteria were employed to identify the best predictive models. The coefficients of determination for the best predictive single- and double-entry models were found to be 0.972 and 0.975, respectively. Additionally, the results of these models were compared with the volume predictions derived from four models presented in the literature. The results of this study will enhance the accuracy of tree volume estimation for Scots pine stands in the Kastamonu region.

 The objective of this study is to develop tree volume equations for Scots pine trees in the Kastamonu region and to compare the prediction capability of these equations with existing tree volume equations. For this purpose, stump diameter, diameter at breast height, diameters in each meter up to the top of the tree, and tree height measurements were measured on 127 sample trees from the Kastamonu Forest Enterprise in the Kastamonu Regional Directorate of Forestry. Subsequently, tree volumes were calculated based on these measurements and using the sectional method. This method entailed volumizing the trees in three sections: the stump section, the top section and the one-meter sections between the stump and the top sections. To develop single- and double-entry tree volume equations, the parameters of eight volume equations were estimated. Four statistical criteria were employed to identify the best predictive models. The coefficients of determination for the best predictive single- and double-entry models were found to be 0.972 and 0.975, respectively. Additionally, the results of these models were compared with the volume predictions derived from four models presented in the literature. The results of this study will enhance the accuracy of tree volume estimation for Scots pine stands in the Kastamonu region.

 Bu çalışmanın amacı, Kastamonu bölgesindeki sarıçam ağaçları için ağaç hacim denklemleri geliştirmek ve bu denklem tahminlerini mevcut ağaç hacim denklemleri ile karşılaştırmaktır. Bu amaçla Kastamonu Orman Bölge Müdürlüğüne bağlı Kastamonu Orman İşletme Müdürlüğünden alınan 127 örnek ağaç üzerinde dip kütük çapı, göğüs yüksekliği çapı, göğüs çapından itibaren ağacın tepesine kadar 1er metre aralıklarla gövde çapları ve ağaç boyu ölçümleri yapılmıştır. Daha sonra bu ölçümler kullanılarak ağaç hacim değerleri hesaplanmıştır. Tek ve çift girişli ağaç hacim denklemlerinin geliştirilmesi amacıyla sekiz adet 4er adet tek ve çift girişli denkleme ilişkin parametreler tahmin edilmiştir. En başarılı olan denklemlerin seçilmesinde dört adet istatistiksel ölçüt kullanılmıştır. En başarılı tek ve çift girişli denklemlere ilişkin belirtme katsayıları sırasıyla 0,972 ve 0,975tir. Aynı zamanda model sonuçları literatürde yer alan dört adet denkleme ilişkin hacim tahminleri ile de karşılaştırılmıştır. Bu çalışmanın bulguları, Kastamonu yöresi sarıçam meşcerelerinde ağaç hacimlerinin güvenilir bir şekilde tahmin edilmesine katkı sağlayacaktır.

Makale detayları

Volume equations for Scots pine trees in Kastamonu region

Yazarlar:

Fadime Sağlam

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Orman Biyometrisi

Dergi:

Turkish Journal of Forestry Vol.25 Issue 4, pp.430-436

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001336548

pISSN:

2149-3898

Pinus sylvestris L.

Tree volume tables

KastamonuPinus sylvestris L.

Ağaç hacim tabloları

Kastamonu

Sayı

Makale detayları

Volume equations for Scots pine trees in Kastamonu region

Yazarlar: Fadime Sağlam

Yayıncı: Isparta University of Applied Sciences

Ana Başlıklar: Orman Biyometrisi

Dergi: Turkish Journal of Forestry Vol.25 Issue 4, pp.430-436

Belge Tipi: Makale

Yayın Tarihi: 12/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001336548

pISSN: 2149-3898

Pinus sylvestris L.

Tree volume tables

KastamonuPinus sylvestris L.

Ağaç hacim tabloları

Kastamonu

Sayı

Yazarlar:

Fadime Sağlam

Yayıncı:

Isparta University of Applied Sciences

Ana Başlıklar:

Orman Biyometrisi

Dergi:

Turkish Journal of Forestry Vol.25 Issue 4, pp.430-436

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001336548

pISSN:

2149-3898