The Role of Tree Diameter in Mortality Risks During Resin Production in Pinus brutia

Year 2025, Volume: 25 Issue: 1, 118 - 126, 26.03.2025

İnci Çağlayan

https://doi.org/10.17475/kastorman.1660620

Abstract

Aim of study: In this study, the effects of bark streak tapping resin extraction on tree mortality risk and survival rates across diameter classes in Pinus brutia forests are looked into.
Area of study: Research was conducted in the Korudağ Forest Sub-District, Keşan Forestry Department, and Çanakkale Forest Regional Directorate in Türkiye.
Material and method: We monitored 396 trees for 17 months, extracting resin every 15 days. We used Kaplan-Meier survival analysis to assess the mortality risks for three diameter classes: pole stage (8-19.9 cm), small wood (20-35.9 cm), and mature (36-51.9 cm.)
Main results: Smaller-diameter trees (8-19.9 cm) exhibited the highest mortality risk with a survival rate of 71.1%, while medium-diameter trees (20-35.9 cm) had a survival rate of 93.2%, and larger-diameter trees (36-51.9 cm) showed complete survival. Overall, 41 trees (89.6%) died, with significant differences in survival probabilities among diameter classes.
Research highlights: Smaller-diameter trees are more vulnerable to mortality during resin tapping, underscoring the need for sustainable management strategies.

Keywords

Forest Conservation, Kaplan-Meier Survival Analysis, Mortality Risk, Pinus brutia, Resin tapping, Sustainable Forest Management, Diameter Classes, Tree Mortality

Kızılçamda (Pinus brutia) Reçine Üretiminin Ağaç Ölüm Oranına Etkisi

Abstract

Çalışmanın amacı: Bu çalışmada, kızılçam (Pinus brutia) ormanlarında açık yara yöntemiyle yapılan reçine üretiminin ağaçların kuruma riski ve farklı çap sınıflarındaki yaşama oranları üzerindeki etkileri incelenmiştir.
Çalışma alanı: Araştırma, Türkiye’nin Çanakkale Orman Bölge Müdürlüğü, Keşan Orman İşletme Müdürlüğü’ne bağlı Korudağ Orman İşletme Şefliği sınırlarında gerçekleştirilmiştir.
Materyal ve yöntem: 396 ağaç, 15 günde bir reçine üretilerek 17 ay boyunca izlenmiştir. Kuruma risklerini değerlendirmek için Kaplan-Meier yaşama analizi kullanılmış ve ağaçlar üç çap sınıfına ayrılmıştır: sırıklık ve direklik (8-19.9 cm), ince ağaçlık (20-35.9 cm) ve orta ağaçlık (36-51.9 cm)
Temel sonuçlar: Küçük çaplı ağaçlar (8-19.9 cm) %71.1 yaşama oranı ile en yüksek kuruma riskini göstermiştir. Orta çaplı ağaçlarda (20-35.9 cm) yaşama oranı %93.2 iken, büyük çaplı ağaçlar (36-51.9 cm) tamamen hayatta kalmıştır. Genel olarak, çap sınıfları arasında önemli farklılıklarla birlikte toplamda 41 ağaç (%89.6) kurumuştur.
Araştırma vurguları: Küçük çaplı ağaçlar, açık yara yöntemiyle yapılan reçine üretimi sırasında kuruma riskine daha duyarlıdır ve bu durum sürdürülebilir yönetim stratejilerinin gerekliliğini ortaya koymaktadır.

Keywords

Orman Koruma, Kaplan-Meier Yaşama Analizi, Kuruma Riski, Pinus brutia, Reçine Üretimi, Sürdürülebilir Orman Yönetimi, Çap Sınıfları, Ağaç Ölümü

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