Yıl: 2015 Cilt: 65 Sayı: 2 Sayfa Aralığı: 38 - 45 Metin Dili: Türkçe

How stem defects affect the capability of optimum bucking method ?

Öz:
Orman ürünlerinin üretiminde kullanılan bilgisayar destekli optimum boylama metodu üretilen ağaçlarınekonomik değerini arttırmaktadır. Boylama kararı, gövde kusurları ve gövde formu gibi yüzey karakteristiklerine göredeğişen tomruk kalite sınıflarına bağlıdır. Bu çalışmada, gövde kusurlarının optimum boylama metodu üzerindekietkisini incelemek için iki farklı Kızılçam (Pinus brutia Ten) meçceresinde üretim çalışmaları sırasında yürütülenboylama uygulamaları karşılaştırılmıştır. Uygulamalarda, birinci meçceredeki gövdeler ikinci meşceredekilere oranladaha fazla gövde kusuru içermektedir. Birinci ve ikinci meşcerelerde, örnek ağaçlarda her bir tomruk için ortalamakusur sayısı sırasıyla 3,64 ve 2,70 olarak kaydedilmiştir. Sonuçlar optimum boylama metodunun bu meşcerelerdeüretilen ağaçların ortalama ekonomik değerini sırasıyla %15,45 ve %8,26 oranında arttırdığını göstermiştir. Buna göre,bilgisayar destekli optimum boylama metodu fazla sayıda gövde kusuru içeren ağaçlarda potansiyel olarak gelenekselboylama yö ntemine göre daha iyi sonuçlar sağlamaktadır.
Anahtar Kelime:

Konular:
Fen > Mühendislik > Orman Mühendisliği

Gövde kusurları optimum boylama metodunun başarısını nasıl etkiler?

Öz:
Abstract: In forest harvesting activities, computer-assisted optimum bucking method increases the economic value ofharvested trees. The bucking decision highly depends on the log quality grades which mainly vary with the surfacecharacteristics such as stem defects and form of the stems. In this study, the effects of stem defects on optimum buckingmethod was investigated by comparing bucking applications which were conducted during the logging operations intwo different Brutian Pine (Pinus brutia Ten) stands. In the applications, the first stand contained the stems withrelatively more stem defects than that of the stems in the second stand. The average number of defects per log forsample trees in the first and the second stand was recorded as 3.64 and 2.70, respectively. The results indicated thatoptimum bucking method increased the average economic value of harvested trees by 15.45% and 8.26 % in the stands,respectively. Therefore, the computer-assisted optimum bucking method potentially provides better results than that oftraditional bucking method especially for the harvested trees with more stem defects.
Anahtar Kelime:

Konular:
Fen > Mühendislik > Orman Mühendisliği
Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
  • Akay, A.E., Sessions, J., Bettinger, P., Toupin, R., Eklund, A., 2006. Evaluating the salvage value of fire -killed timber by helicopter - Effects of time since fire and yarding distance. Western Journal of Applied Forestry 2 (2):102 -107.
  • Akay, A.E., Tutus, A., 2006. Using image analysis in estimating blue stain defects on fire -killed Brutian Pine (Pinus b rutia ). Wood Research 51(1):41 -50.
  • Akay, A.E., 2009. The effects of forest harvesting techniques on optimum bucking application of Oriental Spruce (Picea orientalis ) s tands in Turkey. Austrian Journal of Forest Science 127(1): 25 -36.
  • Akay, A.E., Sessions, J., Serin, H., Pak, M., Yenilmez, N., 2010. Applying optimum bucking method in producing Taurus Fir (Abies cilicica ) log s in Mediterranean Region of Turkey. Baltic Foresty 16(2):273 -279.
  • Barszcz, A., 1989. Analysis of the frequency of occurrence of wood defects in standing coniferous trees as an extension to evaluations of the quality of the raw material base . Sylwan 133(3): 31 -38.
  • Bishop, J.T., 1998. The Economics of Non -timber Forest Benefits: An Overview , IIED Gatekeeper Series, London, 18 pp.
  • Bozkurt, Y., Goker, Y., 1981. Utilization of Forest Products, Istanbul University, Faculty of Forestry, Publication No: 2840, Istanbul, 297 pp.
  • GDF, 2009. General Directorate of Forestry, Forest Production and Marketing Department, The Evaluation of Production and Marketing Activities in 2009.
  • Güller, B., 2007. Different thinning effects on wood -water relationship in Turkish Red Pine (Pinus brutia Ten.). SDU Faculty of Forestry Journal 11(1): 29 -37.
  • Laroze, A.J., Greber, B.J., 1997. Using tabu search to generate stand -level, rule-based bucking patterns. Forest Science 43(2): 367 -379.
  • Lowell, E.C., Willits, S.A., Krahmer, R.L., 1992. Deterioration of Fire-killed and firedamaged timber in the Western United States, U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station, Portland, OR, General Technical Report 292. 26 pp.
  • Olsen, E., Stringham, B., Pilkerton, S., 1997. Optimal Bucking: Two Trials with Commercial OSU BUCK Software. Oregon State University, College of Forestry, Forest Research Laboratory, Research Contribution 16, 32 p.
  • Rebula, E., 1987. Cutting time and timber manufacturing of coniferous in view o f forest sites . Gozdarski Vestnik 45(8): 381 -388.
  • Serin, H., Akay, A.E., Pak, M., 2010. Estimating the effects of optimum bucking on the economic value of Brutian Pine (Pinus b rutia ) logs extracted in Mediterranean Region of Turkey. African Journal of Agricultural Research 5(9): 916 -921.
  • Sessions, J., 1988. Making better tree bucking decisions in the woods: an introduction to optimal bucking . Journal of Forestry 86(10): 43 -45.
  • Sessions, J., Layton, R., Guangda, L., 1988a. Improving tree bucking decisions: a net-work approach . The Compiler 6(1): 5 -9.
  • Sessions, J., Olsen, E., Garland, J., 1989b. Tree bucking for optimal stand value with log allocation constraints. Forest Science 35(1): 271 –276.
  • Susnjar, M., Krpan, A.P., Pentek, T., Horvat, D., Porsinsky, T., 2006. Influence of knots on classification of timber assortments of silver fir into quality classes . Wood Research 51(1): 51 -58 .
  • Uusitalo J., Isotalo J., 2005. Predicting knottiness of Pinus sylvestris for use in tree bucking procedures . Scandinavian Journal of Forest Research 20: 521 -533 .
APA AKAY A, SERİN H, PAK M (2015). How stem defects affect the capability of optimum bucking method ?. İstanbul Üniversitesi Orman Fakültesi Dergisi, 65(2), 38 - 45.
Chicago AKAY Abdullah E.,SERİN HASAN,PAK MEHMET How stem defects affect the capability of optimum bucking method ?. İstanbul Üniversitesi Orman Fakültesi Dergisi 65, no.2 (2015): 38 - 45.
MLA AKAY Abdullah E.,SERİN HASAN,PAK MEHMET How stem defects affect the capability of optimum bucking method ?. İstanbul Üniversitesi Orman Fakültesi Dergisi, vol.65, no.2, 2015, ss.38 - 45.
AMA AKAY A,SERİN H,PAK M How stem defects affect the capability of optimum bucking method ?. İstanbul Üniversitesi Orman Fakültesi Dergisi. 2015; 65(2): 38 - 45.
Vancouver AKAY A,SERİN H,PAK M How stem defects affect the capability of optimum bucking method ?. İstanbul Üniversitesi Orman Fakültesi Dergisi. 2015; 65(2): 38 - 45.
IEEE AKAY A,SERİN H,PAK M "How stem defects affect the capability of optimum bucking method ?." İstanbul Üniversitesi Orman Fakültesi Dergisi, 65, ss.38 - 45, 2015.