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Türkiye’nin önemli orman ağaçlarından biri olan Anadolu kestanesi (Castanea sativaMill.) geniş alanlarda saf ve karışık meşcereler kurmaktadır. Kestane biyolojisine aykırı uygulamalar ve çeşitli hastalıklar nedeniyle koru kestane ormanlarının vasfı bozulmuş, birçok yerde baltalık vasıflı işletilmesi silvikültürel seçenek haline gelmiştir. Aralama, ormanların işletilmesinde kullanılan en önemli silvikültürel müdahalelerden biridir. Bu çalışmanın amacı Gölcük (Kocaeli) yöresi 15 yaşındaki kestane baltalıklarında aralama şiddetinin çap, göğüs yüzeyi ve hacim ile bunların artımlarına bir yıllık etkilerini değerlendirmektir. Aralama denemesi rastlantı blokları deneme desenine göre üç tekrarlı kurulmuş ve dört farklı aralama şiddeti uygulanmıştır. Aralama öncesi meşcere ağaç sayısı, orta çapı, göğüs yüzeyi ve hacmi sırasıyla 4936 adet, 8.73 cm, 30.71 m2 ha-1 ve 163.68 m3 ha-1’dı. Aralama ile göğüs yüzeyinin % 0 (kontrol), % 18’si (mutedil), % 34’ü (şiddetli) ve % 49’u (çok şiddetli) meşcereden çıkartılmıştır. Aralamanın bir yıllık sonuçlarına göre aralama şiddeti arttıkça çap artımı artmakta, buna bağlı olarak aralanan parseller kontrol kadar göğüs yüzeyi ve hacim artımı yapmışlardır. Çok şiddetli aralanan meşceredeki çap artımı kontrolün iki katı kadardır. Aralama şiddetine bağlı olarak başlangıç çap sınıfları arttıkça çap artımı da artmıştır. Aralamanın büyümeye etkisi bağlamında daha uzun süreli sonuçlara ihtiyaç duyulmakla birlikte, ulaşılan bir yıllık sonuçlara göre benzer özellikteki kestane baltalıklarında çok kuvvetli aralamalar önerilebilir.
It is one of the main forest trees in Turkey, the Anadolu castanese (Castanea sativaMill.) It creates pure and mixed spots in large areas. As a result of practices that are contrary to castan biology and various diseases, the reservoir of the conservation castan forests has been damaged, in many places the operations qualified as balcony have become a silvicultural option. Aralama is one of the most important silvicultural interventions used in the management of forests. The aim of this study is to evaluate the one-year effects of the diameter, surface and volume of the intermittent intensity in the 15 year old castan bacteria in Gölcük (Kocaeli) area and their increase in volume. According to the test pattern, trial trial blocks have been installed three times and four different trial intensities have been applied. The number of forecast trees, the average diameter, the chest surface and volume were 4936 pieces, 8.73 cm, 30.71 m2 ha-1 and 163.68 m3 ha-1 respectively. With the interval, 0% (control), 18% (muted), 34% (heavy) and 49% (very severe) of the chest surface were removed from the chest. According to the one-year results of the interval; as the interval strength increases, the diameter increases, according to which the scattered parcels have made the surface of the chest and volume increases as much as control. The increase in diameter in the very severe scratch is twice as much as the control. Depending on the intensity of the interval, as the starting diameter classes increase, the diameter increase also increased. While longer-term results are needed in the context of the growth effect of the interval, very strong intervals in the castan valves of similar characteristics may be recommended according to the achieved one-year results.
Anatolian chestnut (Castanea sativa Mill.) is one of the most important hardwood forest tree in Turkey and it has mixed and pure stands in large areas. Due to the practices contrary to the biology of chestnut and various diseases, the chestnut high forests has been degraded and coppice system has become a silvicultural necessity in many places. Thinning is one of the most important silvicultural treatments used in the tending of forests. The aim of this study was to evaluate the effects of thinning intensity on diameter, basal area and volume, and also their increments of chestnut coppices in Gölcük (Kocaeli) district. The thinning experiment was established according to randomized block design with three replications and four different thinning intensities. Before thinning tree number, mean diameter, basal area and volume of the coppice stand were 4936 trees, 8.73 cm, 30.71 m2 ha-1 and 163.68 m3 ha-1, respectively. The thinning intensities were removal of basal area as 0% (control), 18.2% (moderate), 34% (heavy) and 49% (very heavy). According to the one year results; as the thinning intensity increased, the diameter increment increased, and as a result the basal area and volume in the thinned stands increased as much as the control. The diameter increment at the very heavy thinned plots was as twice the control. As the initial diameter classes and thinning intensity increased, the diameter increment also increased. According to the one year results, thinning intensity up to 40% can be suggested in similar chestnut coppices. However, the long term effects of the thinning treatments should be evaluated.
Field : Fen Bilimleri ve Matematik
Journal Type : Ulusal
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