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Abstract Detail

Ecological Section


Modelling the diameter distribution of three coniferous tree species from Central Karakorum National Park, Gilgit-Baltistan, Pakistan using Weibull function.

This investigation focuses on modeling the tree diameter distribution of three conifer species, i.e. Piceasmithina, Pinus wallichiana and Juniperus excelsa dominating the forests of Central Karakoram National Park, Gilgit-Baltistan. Various workers have attempted to model the population structure of trees in their respective study areas. A number of probability distributions have been employed to find a good fit to the observed distributions. A number of recent studies have indicated the three parameter Weibull distribution as a possible model for describing the size class structure of trees. Thus, the Weibull model was selected to describe the diameter distribution of the three conifer tree species under study. The parameters for each tree distribution were estimated by a program CumFreq that employs the maximum likelihood method. The cumulative distributions of eachtree species were tested against the fitted distribution. In all cases the Weibull distribution gave excellent fit to the observed data as indicated by high efficiency coefficient R. The possible implications of these models in the management of the respective forests are discussed.

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1 - Federal Urdu University of Arts science and Technolgy, Botany, Fuuast Gulshan Campus, Karachi, Sindh, 75300, Pakistan

Diameter distribution

Presentation Type: Poster:Posters for Sections
Session: P
Location: Grand Salon A - D/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 5:30 PM
Number: PEC003
Abstract ID:87
Candidate for Awards:None

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