Processes of forest products and production costs in Guilan forests, Iran

This research was conducted in the west forest of Guilan, northern Iran. Data from various harvesting methods for 20 years were collected. Results showed that, productivity rate of round wood, pulp wood and fuel wood has had an upward trend, while rate of traditional products (lumber, sawn wood, charcoal, etc.) has had a downward trend. Production cost has been investigated in this research. The results showed that, the main cost is the opportunity cost. Due to the disability of competition between the domestic wood price with the imported wood price, domestic wood industries will face serious investment difficulty in the future.   REFERENCES Andersson, G. and Eliasson, L. (2003) Effects on three harvesting methods on harwarder productivity in final felling. Proceedings 2nd forest engineering conference, Vaxgo, Sweden, 5 p. Baumgras, J.E., Hassler, C.C. and LeDoux, C.B. (1993) Estimating and validating harvesting system production through computer simulation. For. Prod. J. 43, 65-71. Bonyad, A. (1989) Study of harvesting age for Beech (Fagus orientalis) in Asalem forest ( Northern Iran ). MSc. Dissertation, University of Tehran, 96 p. Carter, D.R. & Newman, D.H. (1998) The impact of reserve prices in sealed did federal timber sale auctions. Forest Science, 44, 485-495. FAO. (1999) State of world’s forests. Rome, 41 p. Heshmatolvaezin, M. (2000) Economically harvesting planning for northern Forests of Iran. M.Sc Dissertation, University of Tehran, Tehran, Iran, 211 p. Howard, A.F. (1995) Price trends for stumpage and selected agricultural products in Costa Rica. Forest Ecology and Management. 75, 101-110. Iranian Forests, Pastures and Watershed Organization. 2006. Reports of forest productivity in northern forests of Iran, 115 p. Linden, M. & Uusivuori, J. (2000) Modeling timber price forecasts and stumpage market expectation in Finland 1900- 1995. Journal of Forest Economics, 6, 131-149. Lohmander, P. (1987) Pulse extraction under risk and a numerical forestry application. International Institute for Applied Systems Analysis, IIASA, WP- 84-49, 39 p. Mohammadi Limaei, S. and Lohmander, P. (2007) Stumpage Prices in the Iranian Caspian Forests, Asian Journal of Plant Sciences. 6, 1027-1036. Naghdi R., (2004) Comparative study of tree length and cut to length logging methods for determining suitable forest road network in Neka-Zalemroud region. PhD Dissertation, Faculty of Natural Resources, Tarbiat Modares University, Tehran, Iran, 230 p.

Processes of forest products and production costs in Guilan forests, Iran Keywords:

forest products , productivity rate , traditional products , industrial products , Guilan Province , Iran