STATISTICAL INVESTIGATION FOR VOLUME TABLE OF Toona ciliata M. Roem
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Date
2021-10
Authors
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Volume Title
Publisher
UHF,NAUNI
Abstract
ABSTRACT
The present study entitled “Statistical Investigation for Volume Table of Toona
ciliata M. Roem” was carried out in District Kangra, Himachal Pradesh. The investigation
was undertaken to propose the convenient tool for foresters and researchers to obtain the
estimated volume of Toona ciliata at any form without employing devastating procedures.
For the study, primary data for diameter and height of toona trees was obtained from four
distinct sites of District Kangra viz, Nihari, Baslag, Chauli and Kaloha. A total of 100 Toona
ciliata trees were marked, with 25 trees from each site. To test the variability among different
sites, the data was subjected to variability analysis. Thereafter, the homogeneity of variances
in diameter, height, and volume parameters was tested using Bartlett's chi-square test.The
predicted number of trees in each diameter class was calculated using probability
distributions as per the cross section of data, and the significance of these results was tested
using the Kolmogorov-Smirov test statistic. To estimate the number of toona trees in various
diameter classes in this zone, the best fitted distributions were found to be log-normal and
gamma.A two-way volume table was constructed using the best-fit power model for Toona
ciliata. Finally the regression analysis was employed to predict the volume of toona trees and
construction of volume tables.