Evaluation of Anatomical and Physical Properties of Juvenile/Mature Wood of Populus alba and Populus × euramericana | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| Article 17, Volume 24, Issue 1 - Serial Number 30, September 2009, Pages 134-147 PDF (183.63 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijwpr.2009.117363 | ||
| Authors | ||
| Davood Efhami* 1; Ahmad reza Saraeyan2 | ||
| 1Natural Resources Faculty of Tehran University | ||
| 2Assis. Prof., Natural Resources and Agricultural Science University of Gorgan | ||
| Abstract | ||
| In this study Populus alba native clone and Populus euramericana 476 clone trees from Gorgan University educative forest were used. Some applied anatomical and physical properties of these species were determined. Results showed that the juvenility age for both species is approximately 10 years .In both species with increase of annual rings upto tenth ring the fiber length increase intensively. After tenth ring in P. alba this trend keep on slowly but in P. euramericana the average length of fiber decreased as increase of annual rings. With regard to the annual growth the juvenile wood percentage in the P. alba and euramericana species were 46.8% and 73.8%, respectively. Basic density of breast height in P. alba and P. euramericana species were 0.329 and 0.318 g/cm3 respectively, that increases from pith to bark. Furthermore there is significant difference between density of juvenile wood and mature wood in both species. The pattern of shrinkage in studied species had decreasing procedure from pith to bark. | ||
| Keywords | ||
| Populus alba; Populus euramericana X; Juvenile wood; Mature wood; FIBER LENGTH; Basic density and Shrinkage | ||
| References | ||
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- حسینی، ض.، 1379. مورفولوژی الیاف در چوب و خمیر کاغذ، انتشارات دانشگاه علوم کشاورزی و منابع طبیعی گرگان. - حسینی، ض.، نقدی، ر.، 1383. بررسی جوانچوب و تغییرات طول الیاف در افرا پلت. مجله علوم کشاورزی و منابع طبیعی (گرگان) ، شماره دوم. 14- 7. - کرد، ب.، 1385. بررسی تغییرات خواص فیزیکی چوب گونه صنوبر دلتوئیدیس در محورهای طولی و شعاعی درخت، فصلنامه تخصصی علوم و فنون منابع طبیعی دانشگاه آزاد اسلامی واحد نوشهر و چالوس، پیش شماره اول، صفحه 78- 65. - ثابتی، ح.، چاپ سوم 1382. جنگلها، درختان و درختچههای ایران. دانشگاه یزد. 806 صفحه. - مهدوی، س.،رسالتی، ح.، 1382. تاثیر اثر سن و رویشگاه بر خواص چوب صنوبر دلتوئیدیس کلن 51/77، همایش ملی فرآوری و کاربرد مواد سلولزی. دانشکده فنی دانشگاه تهران. - مهرابی، س.،1370. بررسی مقایسهای استفاده از سه کلن صنوبر کبوده بومی، دلتوئیدیس و اورامریکن جهت تهیه خمیر کاغذ و کاغذ. پایان نامه کارشناسی ارشد ، دانشگاه تهران. - نظرنژاد، ن.، 1376. بررسی خصوصیات خمیر کاغذ با راندمان بالا CMP از دو گونه صنوبر دلتوئیدیس و اورامریکن. پایان نامه کارشناسی ارشد ، دانشگاه تهران. -DeBell S. Dean., Singleton. Ryan., A. Harrington. Constance., Gartner L.Barbara. 2002. Wood density and fiber length in young Populus stems: relation to clone, age, growth rate, and pruning. Wood and Fiber Science, 34(4), 2002, pp. 529-539 -Karki,T. 2001. Variation of wood density and shrinkage in European aspen, Holz (59) 2001. 13-25. - Kocurek, M.J., Steven, K., 1983. Pulp and paper manufacture. Volume 1. Joint Text book Committee of the Paper Industry. Canada. 20-50 -Kollman, F.F.P., And Cote. W.A,.1968. Principles of wood science and technology, Volume 1. Solid wood, Springer-Verlag, New York -Kozolowski, T.T. 1971. Growth and development of trees. Academic press, New York, Berlin. 94-116 -Kuhn, G. A., AND J. Nuss. 2000. Watershed management using hybrid poplar. Agro forestry Notes, National Agro forestry Center, AF Note-17. USDA For. Serv. and USDA Nat. Res. Conserv. Serv., Lincoln, NE. -Matyas, C., And Peszlen, I., 1997. Effect of Age on Selected Wood Quality Traits of Poplar Clones. Silvae Genetica 46(2–3). 64-72 -M.Rowell, R., A.Young, R., K.Rowell, J., 1989. Paper and composites from agro based resources .New York .10-15. -M.Rowell, R., Maeglin, P. Juvenile Wood, Tension Wood and growth stress effects on processing hardwoods. 1987. USDA Forest Service Journal(29)1989. 36-47. -Myers, C. Gary. Thermomechanical pulping of loblolly pine juvenile wood. 2002. wood and fiber science, 34(1), pp. 108-115. -Panshin,A.J. And C,Dezeeuw.1980. Text book of wood technology, 4th edition, Mc Graw Hill, New York. 240-281. -Robert. B. Hanna., Francis, R.C., And Shin. Grad., 2005., Characterization of Hardwood Pulps from Fast-Grown Hybrid Poplar., FOREST PRODUCTS SOCIETY 58TH ANNUAL MEETING (2004). -Tsoumis, G. 1969. Wood As Raw Martial. Pergamon press. New York, London. 123-138. -Zobel,B.J., And J. R. Spargue. 1998. Juvenile wood in forest trees. Springer-Verlag, New York. 300 pp. -Zobel,B.J. And Buijtenen,P. 1989. Wood variation, Its causes and control, Spring-Verlag, New York, Berlin. 72-132. | ||
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