Türkiye’nin bazı önemli ağaç türleri için yöresel gövde çapı modellerinin geliştirilmesi: Bucak örneği

Abstract

Bucak yöresi kızılçam (Pinus brutia Ten.), Toros sediri (Cedrus libani A. Rich.) ve Toros göknarı (Abies cilicica Carr.) meşcereleri için uyumlu gövde çapı ve gövde hacim denklemleri geliştirilmiştir. Test edilen model, tüm ağaç türleri için gövde çapı ve hacim tahminlerinde başarılı sonuçlar vermiştir. Kullanılan gövde çapı ve hacim modelinin, çap ve hacim tahminlerindeki doğruluğu ve hassasiyeti, 10 nisbi boy değeri için de test edilmiştir. Diğer yandan, Bucak yöresindeki üç ağaç türü için geliştirilen gövde çapı modellerinin kendi aralarında ve Mut ve Elmalı yörelerindeki aynı türler için geliştirilen gövde çapı modellerinden farklılık gösterip göstermediği doğrusal olmayan ekstra kareler yöntemi kullanılarak araştırılmıştır. Doğrusal olmayan ekstra kareler yöntemi sonuçlarına göre, güvenilir gövde çapı, ticari veya toplam hacim tahminleri için yörelere ve türlere özgü geliştirilen gövde çapı ve gövde hacmi denklemlerinin kullanılması ya da parametre tahminlerinin yapılması gerektiği anlaşılmıştır.

Keywords

• Toros sediri,Toros göknarı,Gövde çapı denklemleri,Kızılçam,F-test

Development of regional stem taper models for some important tree species of Turkey: Case study of Bucak

Abstract

Compatible stem taper and volume models were developed for Brutian pine (Pinus brutia Ten.), Cedar of Lebanon (Cedrus libani A. Rich.), and Cilicica fir (Abies cilicica Carr.) in Bucak forest region of Southern Turkey. The proposed models generally performed better for the whole tree for all tree species. Diameter and volume predictions at 10 points along the stem were made to verify the accuracy and precision of these models for the three species. More specifically, differences among different tree species in one region and regional differences of the taper equation were examined using the nonlinear extra sum of squares method. The results of the non-liner extra sum of squares method indicated that species-specific taper equations for estimating diameters along the stem and predicting merchantable or total volume for each region are required.

Keywords

• Brutian pine,Cedar of Lebanon,Cilicica fir,Stem taper equations,F-test

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