Abstract

DOI : 10.26650/forestist.2019.18014 Yol aglari, orman ekosistemleri uzerinde habitatlarin bozulmasi ve parcalanmasi gibi onemli etkilere sahiptir. Ote yandan, yol kenari boyunca isik mevcudiyetinde gorulen artis, bitki turlerinin cesitliligine ve miktarini da yansimaktadir. Bu calismada, yol kenar etkisinin agaclarin buyumesi uzerindeki etkisini arastirmak amaciyla Ihlamur mesceresinde bulunan ornek bir yol agi boyunca agac caplarindaki degisim olculmustur. Calisma, Ihlamurun Turkiye’de en genis yayilis gosterdigi Bursa’nin Karacabey ilcesinde gerceklestirilmistir. Arazi verileri yol kenarindaki 5 metre genisligindeki seritlerden secilen ve yol kenarindan uzakta kontrol bolgesinden secilen ornek agaclardan toplanmistir. Verilerin toplanmasi sirasinda belirlenen bolgelerdeki tum ornek agaclarin gogus yuksekligi capi olculmus ve artim burgusu ile artim kalemleri alinmistir. Daha sonra, yol kenarindaki agaclar ile kontrol bolgesinde yer alan agaclar arasinda cap ve cap artimi degerlerinde bir farklilik olup olmadigini belirlemek icin istatistiksel analiz yapilmistir. Sonuclara gore, yol kenarindan olan mesafenin arttirilmasiyla, ortalama agac caplarinda ve cap artimi degerlerinde azalma gorulmustur. Yol kenarindaki agaclar ve kontrol bolgesinde yer alan agaclar arasinda cap degerleri acisindan istatistiksel olarak anlamli bir fark bulunmustur. Ote yandan, cap artim degerleri arasinda anlamli bir fark tespit edilmemistir. Cite this paper as : Akay, A.E., Tas, I., Gencal, B., 2019. Variation of Tree Diameters along Road Edges: The Case of Karacabey Linden Forest in Bursa, Turkey.

Highlights

  • Road networks located within the forested areas have important functions in terms of sustainable management of forest resources (Gümüş, 2015)

  • The road edge effect on tree growing was investigated by measuring the differentiation of tree diameters along road network located within the Linden stands

  • The results showed that the average diameters at breast height (DBH) of sample trees for the both dimeter classes were higher at the road edge area (Table 1)

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Summary

Introduction

Road networks located within the forested areas have important functions in terms of sustainable management of forest resources (Gümüş, 2015). If they are not planned considering ecological constraints roads potentially cause adverse effects on integrity and stability of natural habitats in forest ecosystems by forming edge effects (Eker and Çoban, 2010; Yilmaz et al, 2010; Gülci et al, 2017). The effects of road edges on growth of trees vary depending on the various factors such as tree age, tree diameter, distance to road, and road width. The distance from the road plays important role on the growth rate of trees. As the distance from road edges increases, the annual growth rate of trees reduces. Road width effects the growth rate since the width of the road affect the amount of light availability along the road edge

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