Prediction model of tree felling by chainsaw in selection system (Case study: Namkhaneh District, Kheiroud forest)

Document Type : Research article

Authors

1 M.Sc. student of forestry, Faculty of natural resources, Islamic Azad university, Chalous branch

2 Assistant Prof., Faculty of natural resources, Islamic Azad University, Chalous branch

3 Associate Prof., Faculty of forestry and wood and paper technology, Gorgan University of agricultural science and natural resources

4 M.Sc. graduated, Faculty of natural resources, University of Tehran

Abstract

Regarding to special situation of northern forests in Iran, chainsaw is a unique cutoff. Nevertheless, study to evaluat operation efficiency is imperative. Present study was carried out with the aim of time study of cutting operation, estimating the productivity and costs of chainsaw, and developing a regression model. According to the results of this study, the hourly production of cutting by chainsaw with and without delay time were 51.6 m3/h (9.6 trees/h) and 86.2 m3/h (16 trees/h), respectively. Cutting productivity was increased related to DBH as power model and on the other hand the unit cost was decreased. Total cutting cycle time with and without delay time were averaged 6.24 and 3.74 minutes, respectively.

Keywords


- جورغلامی، م. و مجنونیان، ب.، 1389. بررسی کارایی عملیات بینه‌بُری با اره‌موتوری به دو روش گرده‌بینه کوتاه و بلند. مجله جنگل ایران، 1 (2): 12-1.
- ساریخانی، ن.، 1387. بهره‌برداری جنگل. انتشارات دانشگاه تهران، 776 صفحه.
- سبحانی، ه. و رأفت‌نیا، ن.، 1376. دستورالعمل تهیه برنامه بهره‌برداری. 39 صفحه.
- مجنونیان، ب.، 1368. بررسی محل و موقعیت بهره‌برداری در سیستم تولید جنگل، مجله منابع طبیعی ایران،        43: 112-102.
- نیکوی، م.، 1386. بهینه کردن هزینه‌های تولید و کاهش صدمات بهره‌برداری و حمل و نقل به چوب، درخت و جنگل با طراحی بهره‌برداری. رساله دکتری جنگل‌داری، دانشکده منابع طبیعی، دانشگاه تهران، 187 صفحه.
- Anonymous, 1998. Safety and health in forestry work. International Labor Office (ILO) Geneva, Italy, 116 p.
- Bjorheden, R. and Thompson, M.A., 1995. An International Nomenclature for Forest Work Study. Paper presented at the XX IUFRO World Congress, Tampere, 6-12 August 1995, Manuscript, 16 p.
- Heinemann, H.R., 2004. Forest operation under mountainous conditions. In: Burley, J., Evans, J. and Youngquist, J., (Eds.). Encyclopedia of Forest Sciences. Elsevier Academic Press, Amsterdam: 279-285.
- Klepac, J. and Rummer, B., 2000. Productivity and cost comparison of two different-sized skidders.Written for Presentation at the 2000 ASAE Annual International Meeting Sponsored by ASAEMidwestExpressCenter, Milwaukee, Wisconsin, USA, 10 p.
- Li, Y., Wang, J., Miller, G. and McNeel, J., 2006. Production economics of harvesting small-diameter hardwood stands in central Appalachia. Forest Products Journal, 56 (3): 81-86.
- Lortz, D., Kluender, R., McCoy, W., Stokes, B. and Klepac, J., 1997. Manual felling time and productivity in southern forests. Forest Products Journal, 47 (10): 59-63.
- Rummer, R. and Klepac, J., 2002. Mechanized or hand operations: which is less expensive for small timber? In: Baumgartner, D.M., Johnson, L.R. and DePuit, E.J., (Eds.). Small Diameter Timber: Resource Management, Manufacturing, and Markets proceedings from conference held February 25-27, 2002 in Spokane, Washington, 268 p.
- Sessions, J., Boston, K., Murphy, G., Wing, M.G., Kellogg, L., Pilkerton, S., Zweede, J.C. and Heinrich, R., 2007. Harvesting Operation In The Tropics. Springer-Verlag, Berlin, Heidelberg.    170 p.
- Wang, J., Long, C., McNeel J. and Baumgras, J., 2004. Productivity and cost of manual felling and cable skidding in central Appalachain hardwood forests. Forest Products Journal, 54 (12): 45-51.
- Zar, J., 1999. Biostatistical Analysis. Prentice Hall, Newjersy, USA, 890 p.