Doğal ve Plantasyonda Yetişen Kızılağaç (Alnus glutinosa L. Gaertner) Odunlarının Yıllık Halka Genişliği ve Lif Boyutlarının Radyal Değişimi
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Date
2016
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Düzce Üniversitesi
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info:eu-repo/semantics/openAccess
Abstract
Devam eden orman endüstri gelişiminin, yapısal odunun tüketiminin ve talebin artması nedeni ile hızlı büyüyen ağaçların plantasyonları endüstriyel odun hammaddesinin sürdürülebilirliği için önemli hale gelmektedir. Bu çalışmada, plantasyonda ve doğal yetişen kızılağaçlarda radyal yönde ki yıllık halka genişliği ve lif boyutlarındaki değişimi belirlemek amaçlanmıştır. Trabzon’dan Meryemana-Yeniköy bölgesinden üç adet plantasyon ağaçları, Maçka-Yüzüncüyıl bölgesinden üç adet doğal ağaçlar kesilmiştir. Göğüs yüksekliğinden bir adet disk çıkarılarak güney ve kuzey yönleri belirlenmiştir. Lif boyutları için odun blokları radyal yönde üç kısımdan (öze yakın, orta ve kabuğa yakın) alınmıştır. İstatistiksel değerlendirme % 5 güven aralığında ANOVA ile değerlendirilmiştir. Plantasyonda yetişen kızılağaçlarda ortalama yıllık halka genişliği 4.08 mm, doğal yetişenlerde. 1. 86 mm’dir. Plantasyonda ve doğal yetişen kızılağaçların yıllık halka genişlikleri arasında istatistikî olarak anlamlı fark görülmüştür. Lif boyutları açısından iç, orta ve dış kısımlar arasında anlamlı farklılık vardır. Doğal ve plantasyonda yetişen kızılağaç odunu için ortalama lif uzunluğu sırası ile; 1115.1 and 1119.43 µm; lif çapı 27.27 and 26.46 µm; lümen genişliği 18.68 and 17.32 µm ve çift çeper kalınlığı ise 8.59 and 9.14 µm’dir. Lif uzunluğu, lif çapı ve çift çeper kalınlığı doğal ve plantasyonda yetişen kızılağaç odunu için yaş ile birlikte artmış, bununla birlikte doğal yetişen kızılağaçlarda lif lümen çapı yaş ile birlikte düşmüştür. Bu çalışma sonucu plantasyonda ve doğal yetişen kızılağaçların yıllık halka genişlikleri ve lif özellikleri arasındaki farkı anlamayı sağlamış ve diğer odun özelliklerinin belirlenmesi teşvik edilmiştir.
Due to the increasing demand and consumption of structural wood and the continuous development of forest industries, plantations of fast-growing trees became important for sustainability of industrial wood raw material. Black alder tree (Alnus glutinosa L. Gaertner) is naturally fast grown tree in North of Turkey. The aim of this research was to determine radial variation of annual ring width and fiber diamensions in planted and natural stands of black alder. The observations were made in young (28 years of age) and in mature trees (38-88 years of age). Three of planted trees were cut from Meryemana-Yeniköy, three of natural alder trees were cut from Maçka-Yüzüncüyıl in Trabzon. From the breast height a disc was taken and determined the South and North side of them. For fiber dimensions wood blocks were taken along the radial direction at three positions (near the pith, middle and periphery). The statistical analyses on the mean differences of the measured variables performed by ANOVA (analysis of variance) at %5 probability. The mean annual ring width was 4.08 mm for planted alder, 1.86 mm for nature alder. There was a significant difference between planted and mature alder wood annual ring width. The mean values of fiber length were 1115.1 and 1119.43 µm; fiber diameter were 27.27 and 26.46 µm; fiber lumen width were 18.68 and 17.32 µm while the mean values for fiber double cell wall thickness were 8.59 and 9.14 µm for natural and planted black alder wood respectively. There was significant difference between section of disc (inner, middle, outer) for fiber dimensions. Fiber length, fiber diameter and double cell wall thickness of fiber increased with age for natural and planted black alder wood; however fiber lumen diameter decreased with age for natural trees.The results of this study provide for understanding the differences between planted and natural tree annual ring and fiber properties and encourage to determine the other wood properties.
Due to the increasing demand and consumption of structural wood and the continuous development of forest industries, plantations of fast-growing trees became important for sustainability of industrial wood raw material. Black alder tree (Alnus glutinosa L. Gaertner) is naturally fast grown tree in North of Turkey. The aim of this research was to determine radial variation of annual ring width and fiber diamensions in planted and natural stands of black alder. The observations were made in young (28 years of age) and in mature trees (38-88 years of age). Three of planted trees were cut from Meryemana-Yeniköy, three of natural alder trees were cut from Maçka-Yüzüncüyıl in Trabzon. From the breast height a disc was taken and determined the South and North side of them. For fiber dimensions wood blocks were taken along the radial direction at three positions (near the pith, middle and periphery). The statistical analyses on the mean differences of the measured variables performed by ANOVA (analysis of variance) at %5 probability. The mean annual ring width was 4.08 mm for planted alder, 1.86 mm for nature alder. There was a significant difference between planted and mature alder wood annual ring width. The mean values of fiber length were 1115.1 and 1119.43 µm; fiber diameter were 27.27 and 26.46 µm; fiber lumen width were 18.68 and 17.32 µm while the mean values for fiber double cell wall thickness were 8.59 and 9.14 µm for natural and planted black alder wood respectively. There was significant difference between section of disc (inner, middle, outer) for fiber dimensions. Fiber length, fiber diameter and double cell wall thickness of fiber increased with age for natural and planted black alder wood; however fiber lumen diameter decreased with age for natural trees.The results of this study provide for understanding the differences between planted and natural tree annual ring and fiber properties and encourage to determine the other wood properties.
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Keywords
Doğal yetişen kızılağaç, Plantasyonda yetişen kızılağaç, Lif, Radyal değişim, Natural grown black alder, Planted black alder wood, Fiber, Radial variation
Journal or Series
Düzce Üniversitesi Orman Fakültesi Ormancılık Dergisi
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Volume
12
Issue
2
