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An integrated system for the estimation of tree taper and volume Demaerschalk, Julien Pierre
Abstract
A new taper equation is presented, log d = b₀ + b₁ log D + b₂ log 1 + b₃ log H where d is the diameter inside bark in inches at any given 1 in feet,D is the diameter breast height outside bark in inches, 1 is the distance from the tip of the tree in feet,H is the total height of the tree in feet and b₀,b₁,b₂ and b₃ are the regression coefficients. Two methods of deriving a compatible system of tree taper and volume equations are discussed.One method involves conversion of the logarithmic taper equation into a logarithmic volume equation.The other involves the derivation of the logarithmic taper equation from an existing logarithmic volume equation to provide compatabllity in volume estimation and at the same time ensure as a good fit as possible for the estimation of upper bole diameters (taper). Tests for precision and bias of volume estimates, carried out on the British Columbia Forest Service taper curves and logarithmic volume equations,indicate that the latter approach is preferable to the former.
Item Metadata
Title |
An integrated system for the estimation of tree taper and volume
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1971
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Description |
A new taper equation is presented,
log d = b₀ + b₁ log D + b₂ log 1 + b₃ log H where d is the diameter inside bark in inches at any given 1 in feet,D is the diameter breast height outside bark in inches, 1 is the distance from the tip of the tree in feet,H is the total height of the tree in feet and b₀,b₁,b₂ and b₃ are the regression coefficients.
Two methods of deriving a compatible system of tree taper and volume equations are discussed.One method involves
conversion of the logarithmic taper equation into a logarithmic volume equation.The other involves the derivation
of the logarithmic taper equation from an existing logarithmic volume equation to provide compatabllity in volume estimation and at the same time ensure as a good fit as possible for the estimation of upper bole diameters (taper).
Tests for precision and bias of volume estimates, carried out on the British Columbia Forest Service taper curves and logarithmic volume equations,indicate that the latter approach is preferable to the former.
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Genre | |
Type | |
Language |
eng
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Date Available |
2011-04-27
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0075435
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.