Assessing the Accuracy of a Product-form Tree Volume Equation | Zendy

Peter Roebbelen | Zendy; V. G. Smith | Zendy

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Assessing the Accuracy of a Product-form Tree Volume Equation

Author(s) -

Peter Roebbelen,

V. G. Smith

Publication year - 1981

Publication title -

the forestry chronicle

Language(s) - English

Resource type - Journals

eISSN - 1499-9315

pISSN - 0015-7546

DOI - 10.5558/tfc57119-3

Subject(s) - volume (thermodynamics) , tree (set theory) , mathematics , product (mathematics) , statistics , variable (mathematics) , set (abstract data type) , data set , regression analysis , regression , dominion , mathematical analysis , computer science , geography , geometry , physics , thermodynamics , archaeology , programming language

In a continuing investigation of product-form as a predicting variable in volume estimation, this study compares a product-form tree volume equation with two standard volume equations and the Dominion Forestry Service form-class 70 and 75 volume tables in their ability to estimate individual tree red pine volumes. Using weighted regression and measurements from 3607 individual trees, coefficients for the three equations were developed. Freese's test of accuracy was used as the criterion of choice in deciding which method proved most accurate in estimating the volumes of a set of test data.The product-form volume equation gave the most accurate estimates.

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