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Determination of beech (Fagus orientalis Lipsky) seeding cycle in Ziarat Forest | ||
| تحقیقات جنگل و صنوبر ایران | ||
| Article 2, Volume 13, Issue 1 - Serial Number 19, March 2005, Pages 16-1 PDF (307.98 K) | ||
| Document Type: Research article | ||
| Authors | ||
| Ahmad Rahmani1; Mostafa Khoshnevis* 2 | ||
| 1Member of scientific board, Research Institute of Forests and Rangelands, Iran. | ||
| 2Member of Scientific Board, Research Institute of Forests and Rangelands, Tehran, I.R. Iran | ||
| Abstract | ||
| The trail was conducted at ZiaratForest (Longitude: 54º 25´ East, Latitude: 36º 43´ North, altitude: 650-2350. asl) of Caspian region of Iran in order to identify the seedling cycle of F. orientalis. Twenty seven dominant beech trees were selected for quantitative and qualitative measurment. After soil and ground cover sampling and tree measurment, the trees were cut down and a disc sample was taken from each tree's stump. The discs were analyzed to study the annual rings. The results showed that: 1-Fagus orientalis has two seeding types, heavy and light. 2- The minimum age of seeding is about 49 year when is often associated with light seeding. 3- The heavy seeding begin at age of 57 year. 4- At a same site, different seeding cycles were observed during the living period. 5- The light and the heavy seeding repeat at 2-6 and 3-27 year period, respectively. 6- Natural regeneration depends on the light seeding cycles due to their frequent occurance. 7- There was a relationship between the averag decerese of annual ring growth rate and seeding types as follows: a. If decrease of annual ring growth rate is more than 1mm, there will be a heavy seeding cycle. b. If decrease of annual ring growth rate is between 1mm and 0.31mm, then there will be alight seeding cycle. C. If decrease of annual ring growth rate is less than 0.31mm, there will not be a seeding cycle. | ||
| Keywords | ||
| Forest; beech; Fagus orientalis; seeding cycle; Growth; Age | ||
| References | ||
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1- حبیبی کاسب، ح.، 1371. مبانی خاکشناسی جنگل. انتشارات دانشگاه تهران. 424 صفحه. 2- زرین کفش، م.، 1380. خاکشناسی جنگل، اثرات متقابل خاک و گیاه در ارتباط با عوامل زیست محیطی اکوسیستمهای جنگلی. مؤسسه تحقیقات جنگلها و مراتع. شمارة انتشار 292، 361 صفحه.
3- Bonneau, M. 1995. Fertilisation des foret dans les pays temperes. ENGREF. Nancy. 367p. 4- Champs, J De. 1976. Recherches sur la culture de resineux en pepiniere. Nangis, AFOCEL- 235 p. 5- Chang,S. X. 2003. Seedling sweetgum (Liquidambar styraciflua L.) half-sib family response to N and P fertilization: growth, leaf area, net photosynthesis and nutrient uptake. Forest Ecology and Management 173: 281-291. 6- Devisser, P.H.B. and Eeltjens W.G. 1993. Growth and nutrient uptake of Douglas-fir seedlings at different rate of ammonium suply, with or without additional nitrat and other nutrients. Netherlands. J. Agr. Sci,41:327-341. 7- Duryea, M.L. and Landis, T.D. 1984. Forest nursery Manual: Production of Bareroot Seedlings.Martinus Nijhoff/Dr W. Junk Publishers. The Hague. 385 pp. 8- Radwan,M.A., Shumway J.S., Debell. D.S. and Krait. J. M. 1991.Variance in response of pole-size trees and seedlings of Douglas-fir and Western hemlock to nitrogen and phosphoruces fertilizers. Can. J. For. Res. Vol 21: 1431-1438. 9- Teng, Y. and Timmer. V.R.1996. Modelling nitrogen and phosphorus interactions in intensively managed nursery soil-plant systems. Can. J. Soil Sci. 76: 523-530. 10- Walker,R.F. 2001. Growth and nutritional responses of containerized Sugar and Jeffrey Pine seedlings to controlled release fertilization and induced mycorrhization. Forest Ecology and Management. 149: 163-179. 11- Wightman,K.E., Shear, T., Goldfarb, B. and Haggar. J. 2001. Nursery and field establishment techniques to improve seedling growth of three Costa Rican hardwoods. New Forests 22: 75-96. | ||
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