Characterization of diameter distribution of some tree species from Gilgit-baltistan using weibull distribution
Paper Details
Characterization of diameter distribution of some tree species from Gilgit-baltistan using weibull distribution
Abstract
Forty stands were sampled to investigate the overall diameter size classes of four dominant tree species of some forests from Gilgit-Baltsitan. On the basis of overall density of individuals of a species the size class structure was derived. Pinus wallichiana A.B.Jacks .occupied 128±21.1 mean stems ha-1, Picea smithiana (Wall.)Boiss. attained 121±5 mean stems ha-1 ,Betula utilis D.Don had a density of 61±18.8 mean stems ha-1 while Juniperus excelsa M.Bieb. had 38±14.3 mean stems ha-1.The DBH distribution of each species was characterized by a three parameter Weibull probability distribution. This distribution was selected as a model since it is flexible and has been demonstrated to provide a good-fit to the size-class structure. Using the maximum likelihood method of parameter estimation, Weibull parameters , a, b and c were estimated and the cumulative distribution was fitted to DBH of evergreen and broad-leaf tree species in which DBH served as an independent variable of the diameter distribution of the natural unevenaged forests. The model showed usually excellent fit to the distribution as indicated by high R2 values. These models can prove to be very handy for an effective management of forest resources.
Ahmed M. 1988b. Population studies of some planted tree species of Quetta. Journal of Pure and Applied. Science 7, 25-29.
Ahmed M, Ashfaq M, Amjad, Saeed M. 1991.Vegetation structure an dynamics of Pinus gerardiana forests in Balouchistan Journal of Vegetation Science 2, 119-124.
Ahmed M, Hussain T, Sheikh AH, Hussain SS, Siddiqui MF. 2006. Phytosociology and structure of Himalayan forests from different climatic zones of Pakistan. Pakistan Journal of Botany 38, 361-383.
Ahmed M, Khan N, Wahab M, Salma H, Siddiqui F, Nazim K, Khan U. 2009. Description and Structure of Olea ferruginea (Royle) forests of Dir lower District of Pakistan. Pakistan Journal of Botany 41, 2683-2695.
Ahmed M, Shaukat SS, Buzadar AH. 1990. Population structure and dynamics of Juniperus excelsa in Balouchistan Journal of Vegetation. Science 1, 271-276
Ahmed M. 1984. Ecology and Dendrochronological studies of Aganthis australis Salisb, Kauri.Ph.D thesis, University of Auckland, New Zealand.
Ahmed M, Shaukat SS. 2012. A Text Book of Vegetation Ecology. Abrar Sons new Urdu Bazar, Karachi, Pakistan.
Akbar M, Ahmed M, Hussain A, Zafar MU, Khan M. 2011. Quantitative forests description from Skardu,Gilgit and Astore Districts of Gilgit-Baltistan, Pakistan. FUUAST Journal of Biology. 1, 149-160.
Akbar M, Ahmed M, Zafar MU, Hussain A, Farooq MA. 2010. Phytosociology and structure of some forests of Skardu district of Karakoram range of Pakistan. American-Eurasian Journal of Agriculture & Environmental Science. 9, 576-583.
Bailey RL, Dell TR. 1973. Quantifying diameter distributions with the Weibull function. Forest Science 19, 97-104.
Baker PJ, Bunyavejchewin S, Chadwick D, Oliver, Peter S, Ashton. 2005. Disturbance history and historical stand dynamics of a seasonal tropical forest in western Thailand. _ Ecology Monogr. 75, 317_343.
Coomes DA, Allen RB. 2007. Mortality and tree-size distributions in natural mixed-age forests. Journal of Ecology 95, 27-40.
Cottam G, Curtis JT. 1956. The use of distance measures in phytosociological sampling. Ecology 37, 451-460.
Denslow JS. 1995. Disturbance and diversity in tropical rain forests: the density effect. Ecological Applications 5, 962-968.
Emborg J, Christensen M, Hilmann-Clausen J. 2000.The structural dynamics of Suseruo Skov,A near-natural temperate deciduous forests in Denmark. Forest Ecology and Management 126, 173-189.
Feeley KJ. 2007. Do current stem size distributions predict future population changes? An empirical test of intraspecific patterns in tropical trees at two spatial scales. Journal of Tropical Ecolog 23, 191-198.
Goff FG, West D. 1975. Canopy_understory interaction effects on forest population structure. Forests Science 21, 98-108.
Hett JM, Loucks OL. 1976. Age structure models of balsam fir and eastern hemlock. Journal of Ecology 64, 1029-1044.
Hitimana J, Kiyiapi JL, Njunge JT. 2004. Forest structure characteristics in disturbed and undisturbed sites of Mt. Elgon moist lower montane forest, western Kenya. Forest Ecology and Management 194, 269_291.
Hough AF. 1932. Some diameter distributions in forest stand of northwestern Pennsylvania. Journal of Forestry 30, 933-943.
Hussain A, Farooq MA, Ahmed M, Zafar MU, Akbar M. 2010. Phytosociology and structure of Central Karakoram National Park CKNP of Northern areas of Pakistan. World applied sciences Journal 9, 1443-1449.
Hussain A, Ahmed,M, Akbar M, Zafar MU, Nazim K, Khan M. 2011.Quantitative community description from Central Karakoram National Park Gilgit-Baltistan, Pakistan. FUUAST,Journal of Biology. 1,135-143
Hyink DM, Moser JW. 1983. A generalized framework for projecting forest yield and stand structure using diameter distributions. Forest Science, 29, 85–95.
Khan N, Ahmed M, Wahab M, Ajaib M. 2010 b. Phytosociology, structure and Physiochemical analysis of soil in Quercus baloot Griff, District Chitral Pakistan. Pakistan Journal of Botany 42, 2429-2441.
Khan N. 2011. Vegetation Ecology and Dendrochronology of Chitral. Ph.D thesis Federal Urdu university of Arts, Sciences and Technology. Karachi. Pakistan.
Kilkki P, Maltamom, Mykkanen R, Paivinen R.1989. Use of the Weibull function in estimating the basal area dbh-distribution. Silva Fennica, 23, 311–318.
Kohyama T. 1986. Tree size structure of stands and each species in primary warm-temperate rain forests of southern Japan. Botanical. Magazine Tokyo 99, 267_279.
Little SN. 1983. Weibull diameter distributions for mixed stands of western conifers. Canadian Journal of Forest Research, 13, 85-88.
Liu CM, Zhang SY, Lei Y, Zhang LJ. 2004. Comparison of three methods for predicting diameter distributionsof black spruce (Picea mariana) plantations in eastern Canada. Canadian Journal of Forest Research, 34, 2424–2432.
Liu C, Zang L, Davis CJ, Solomaon DS, Grove JH. 2002. A finite mixture model for characterization the Diameter distribution of mixed –species forests stands. Forest Science 48, 653-661.
Mabvurira D, Maltamo M, Kangas A. 2002. Predicting and calibrating diameter distributions of Eucalyptus grandis (Hill) Maiden plantations in Zimbabwe. New Forests 23, 207- 223.
Maltano MJ, Punmalainen, Paivenen R.1995. Comparison of beta and Weibull function for modeling basal areas diameter distribution in stands of Pinus sylvestris and Piea abies. Scand. Journal of Forest Research 10, 284-295.
Maltano M, Kangas A, Uuttera J, Torniainen T, Sarmaki J. 2000. Comparison of Percentile based prediction method and the Weibull distribution in Describing the diameter distribution of heterogeneous Scots Pine stands. Forest Management 133, 263-274.
Mueller-Dombois D, Ellenburg H. 1974. Aims and Methods of vegetation Ecology. Wiley, New York. 547pp.
Newton PF, Lei Y, Zhang SY. 2004. A parameter recovery model for estimating black spruce diameter distribution within the context of a stand density management diagram. The Forestry Chronicle 3, 349–358.
Newton PF, Lei Y, Zhang SY. 2005. Stand-level distance-independent diameter distribution model for black spruce plantations. Forest Ecology Management, 209, 181–192.
Niklas KJ. et al. 2003. Tree size frequency distributions, plant density, age and community disturbance. Ecol. Lett. 6: 405-411.ecology and Management, 209:
Podlaski R. 2005. Inventory of the degree of the tree defoliation in small areas. Forest Ecology Management 215, 361-377.
Podlaski R. 2008. Characterization of diameter distribution data in near-natural forests using Birnbaun-Saunders distribution .Canadian Journal of Forest Research 38, 518-527.
Poorter L, Bongers F, Rompaey VR, Klerk M.1996. Regeneration of canopy tree species at five sites in West African moist forest. Forest Ecology Management 84, 61-69.
Rennolls K, Geary DN, Rollinson TJD. 1985. Characterizing diameter distributions by the use of the Weibull distribution. Forestry 58, 57-66.
Robertson PA, Weaver GT, Cavanalgh JA. 1978. Vegetation and tree species patterns near the northern terminus of the southern floodplain forest. Ecology Monograph 48, 249_267.
Ryniker KA, Bush JK, Van AOW. 2006. Structure of Qurecus gambelii communities in the Lancoln National foret,Wew Mexico USA. Forest Ecology and management 69-77.
Schreuder HT, Hafley WL, Bennett FA. 1979. Yield prediction for unthinned natural slash pine stands. Forest Science 25, 25–30.
Schreuder HT, Swank WT. 1974. Coniferous stands characterized with the Weibull distribution. Canadian Journal of Forest Research, 4, 518–523.
Shaheen H, Qureshi RA, Shinwari ZK. 2011. Structural diversity, vegetation dynamics and anthropogenic impact on lesser Himalayan subtropical forests of Bagh district Kashmir. Pakistan Journal of Botany 43, 1861-1866.
Siddiqui MF, Ahmed M, Wahab M, Khan N. 2009. Phytosociology of Pinus roxburghii Sargent (Chir Pine) in lesser Himalayan and Hindu Kush range of Pakistan. Pakistan Journal of Botany 41, 2357-2369.
Siddiqui MF. 2011. Community structure and dynamics of conifer forests of moist temperate area of Himalayan range of Pakistan. Ph.D. thesis Federal Urdu university of Arts, Sciences and Technology Karachi. Pakistan
Wahab M, Ahmed M, Khan N. 2008. Phytosociology and dynamics of some pine forests of Afghanistan. Pakistan Journal of Botany 40, 1071-1079.
Wahab M. 2011. Pupulation Dynamics and Dendrochronological Potential of Pine Tree species From Districts DIR. Ph.D thesis Federal Urdu university of Arts, Sciences and Technology Karachi, Pakistan.
Webster, P. J, Holland GJ, Curry JA, Change HR. 2005. Changes in tropical cyclone number, duration, and intensity in a warming environment. Science 309, 1844-1846.
Zenner EK. 2005. Development of tree size distributions in Douglas-fir forests under differing disturbance regimes. Ecological Applications 15, 701-714.
Muhammad Akbar, S. Shahid Shaukat, Moinuddin Ahmed, Alamdar Hussain, Sujjad Hyder, Shaukat Ali, Faisal Hussain, ghulam Raza, Syed Arif Hussain, Haibat Ali, Muhammad Raza,Salar Ali, Karamat Ali (2014), Characterization of diameter distribution of some tree species from Gilgit-baltistan using weibull distribution; JBES, V5, N4, October, P437-444
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