پیوندهای مفید
آمار
| تعداد نشریات | 31 |
| تعداد شمارهها | 708 |
| تعداد مقالات | 6,652 |
| تعداد مشاهده مقاله | 9,195,349 |
| تعداد دریافت فایل اصل مقاله | 6,307,667 |
Evaluation of non-destructive Meyer method for determination of bark volume of beech (Fagus orientalis Lipsky) in different geographical aspects | ||
| Caspian Journal of Environmental Sciences | ||
| مقاله 11، دوره 10، شماره 1، فروردین 2012، صفحه 67-73 اصل مقاله (233.08 K) | ||
| نویسندگان | ||
| A. E. Bonyad* 1؛ A. Sima2؛ A. Bakhshandeh3؛ Dadras H.4 | ||
| 1S. Mohammadi Limaei*, S. Namdari, A. E. Bonyad, R. Naghdi | ||
| 2A. E. Bonyad1*, , , H. Dadras 3 1- Dept. of Forestry, Faculty of Natural Resources, University of Guilan, Iran. 2- Natural Resources and Watershed Management Organization, Guilan, Iran. 3-Faculty of Geography, Islamic Azad University, Science and Research Campus, Tehran, Iran. * Corresponding author?s E-mail: bonyad@guilan.ac.ir | ||
| 3A. E. Bonyad1*, A. Sima1, , 3 1- Dept. of Forestry, Faculty of Natural Resources, University of Guilan, Iran. 2- Natural Resources and Watershed Management Organization, Guilan, Iran. 3-Faculty of Geography, Islamic Azad University, Science and Research Campus, Tehran, Iran. * Corresponding author?s E-mail: bonyad@guilan.ac.ir | ||
| 4A. E. Bonyad1*, A. Sima1, A. Bakhshandeh2, 1- Dept. of Forestry, Faculty of Natural Resources, University of Guilan, Iran. 2- Natural Resources and Watershed Management Organization, Guilan, Iran. 3-Faculty of Geography, Islamic Azad University, Science and Research Campus, Tehran, Iran. * Corresponding author?s E-mail: bonyad@guilan.ac.ir | ||
| چکیده | ||
| The non-destructive Meyer method was evaluated to determine the bark volume of beech (Fagus orientalis Lipsky) stands in north of Iran. The sample size was 185 standing trees collected from 4 geographical aspects (north, south, west and east) aspects. The constant k values and bark thickness (2e mm) of 185 standing trees were used to calculate the bark volume by the Meyer method. In this study, 40 trees were randomly selected from among the felled trees and analyzed for evolution of non-destructive Meyer method. As a result, 668 diameters and 1236 bark thicknesses were measured out of 40 felled trees. The bark volumes were calculated by non-destructive Meyer and sums of integration methods. The results indicated no significant differences in volume estimates based on two methods (P = 0.816, two-tailed test), There were no significant differences in Levene?s test for equality of variances between the two methods (P=0.576, two-tailed test). The bark volume variations were significantly different in the geographical aspects. Results of this study can be important for silvicultural planning and natural forest management. | ||
| کلیدواژهها | ||
| Bark thickness؛ Beech (Fagus orientalis Lipsky)؛ Meyer method؛ Silvicultual | ||
| مراجع | ||
|
Atha, D. E., Romero, L. and Forrest, T. 2005. Bark volume determination of Bursera simaruba in Belize. Caribbean J. of Science, 41: 843-848.
Amateis, R. L. 2000. Modeling response to thinning Loblolly pine plantations. South. J. Appl. For. 24(1): 17-22.
Bennett,F. 1965. Growth and yield of planted Loblolly pine. A guide to Loblolly and Slash pine plantation management in South Eastern USA.
72Evaluation of non-destructive Meyer method...University of Georgia forest research council, USA. 360 pp.
Bonyad, A. and Rahimnejad, S. 2004. Volume table estimation of Loblolly pine (Pinus taeda) in the north of Iran. J. of Pajouhesh-va-Sazandegi, 66, 43- 47.
Bonyad, A., Poorrastanie R. and Majnonian B. 2003. Study on slop effects on slash of Beech trees using log method. J. of Natural Resources., Vol. 57, No. 1. 91-95.
Farshadfar, E. 2002.Principles and Procedures of Statistics (VOL.2).Taghbostan press,Kermanshah,733p.
Jerrold, H. ZAR., 1999. Biostatistical analysis. Fourth edition.Prentice-Hall international Inc. Englewood Cliffs. New Jersey. 666pp
Jonsson, L. and Nylinder, M. 1990. Bark thickness of Pine in the direction of the stem – functions of cross-cutting. The SwedishUniversity of Agricultural Sciences Department of Forest Products. Report 212: 1–41.
Hengst, G. E. and Dawson, J. O. 1994. Bark properties and fire resistance of selected treespeciesfrom the central hardwood region of North America. Canadian Journal of Forest Research,24: 688-696.
Kleinbaum, D. G., Kupper, L. and Muller, E., 1988. Applied regression analysis and other multivariable methods. Duxbury press. Belmont, California. 718 pp.
Laasasenaho, J., Melkas, T. and Alden, S. 2005. Modeling bark thickness of Picea abies with taper curves. Forest Ecology and Management, 206: 35-47.
Loetsch, F., Zohrer, F. and Haller, K. E, 1973. Forest inventory, vol. II. Munich: BLV Verlagsgesellschaft, Munich. 469 pp.
Mahinpoor, H., 2002. Growth and yield of planted Slash pine (Pinus elliottii) in the north of Iran. Master thesis. Giulan University, Guilan, Iran. 94 pp. Meyer, H. A. 1946. Bark volume determination in trees. J. of Forestry44: 1067-1070.
Namiranian, M. 2006. Tree Measurement and Forest Biometry. Tehran University Press, Tehran,574p.
Ojansuu, R. 1993. Prediction of Scots pine increment using a multivariate variance component model. Acta Forest Fenn. 239: 1-71.
Philip, M. S. 1994. Measuring trees and forest. CAB International, Walling Ford, UK. 310 pp. Roth, I. 1981.
Structural patterns of tropical barks. Berlin- Stuttgart: Gebrüder Borntraeger. Sarikhani, N. 2001. Forest utilization. Tehran University Press, Tehran, 728p.
Shanley, A. R., Pierce, S. A. Laird and Guillén, A. 2002. Tapping the green market, certification and management of non-timber forest products. London: Earthscan Publications.
Sherrill, J. R., Mullin, T. J., Bullock, B. P., McKeand, S. E., and Purnell R.C. 2008. An evaluation of selection for volume growth in Loblolly Pine. Silvae Genetica, 57: 22-28.
Sonmez, T., Keles, S. and Tilki, F. 2007. Effect of aspect, tree age and tree diameter on bark thickness of Picea orientalis. Scandinavian Journal of Forest Research, 22: 193-197.
Valipour, A., Namiranian, M., Etemad, V. and Ghazanfari, H. 2009. Relationships between diameter, height and geographical aspects with bark thickness of Lebanon Oak tree (Quercus libani Olive.) in Armardeh, Baneh (Northern Zagros of Iran). Research J. of Forestry, 3:1. 1-7.
Zobeiry, M. 1995. Forest Inventory (Measurement of Tree and Stand). Tehran University Press, Tehran, 401p. Zobeiry, M. 2003. Forest Biometry. Tehran University Press, Tehran, 411p. | ||
|
آمار تعداد مشاهده مقاله: 2,123 تعداد دریافت فایل اصل مقاله: 1,254 |
||