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A disaggregation function, relative size-growth (RSG) function, is proposed and developed to distribute stand volume growth to a list of individual trees. The relative size-growth (RSG) function is formulated as a quadratic equation relating relative tree growth to relative tree size in a stand. The shape of the RSG function is linear, convex, or concave depending on initial stand conditions and structure. A recursive system of equations is developed to predict the three coefficients of the RSG function using initial stand density, mean tree size and coefficient of variation of tree size distribution as predictor variables. This disaggregation function determines within-stand growth of individual trees and simulates stand development and dynamics. The RSG function provides a biologically based link between whole-stand and individual tree resolution models.

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Title:
Disaggregating Stand Volume Growth To Individual Trees
Creator:
Zhang, L.; Moore, J.A.; Newberry, J.D.
Date Created (ISO Standard):
1992-03-01
Description:
A disaggregation function, relative size-growth (RSG) function, is proposed and developed to distribute stand volume growth to a list of individual trees. The relative size-growth (RSG) function is formulated as a quadratic equation relating relative tree growth to relative tree size in a stand. The shape of the RSG function is linear, convex, or concave depending on initial stand conditions and structure. A recursive system of equations is developed to predict the three coefficients of the RSG function using initial stand density, mean tree size and coefficient of variation of tree size distribution as predictor variables. This disaggregation function determines within-stand growth of individual trees and simulates stand development and dynamics. The RSG function provides a biologically based link between whole-stand and individual tree resolution models.
Subjects:
research (document genres) statistics
Location:
North and Central Idaho; Eastern Washington; Western Montana; Northeastern Oregon
Publisher:
Intermountain Forest Tree Nutrition Cooperative, University of Idaho, College of Forest, Wildlife and Range Sciences, Moscow
Source:
Intermountain Forest Tree Nutrition Cooperative. 1992. Supp. Report No. 5; Disaggregating Stand Volume Growth To Individual Trees. FWR, Univ. of Idaho, Moscow.
Source Identifier:
Disaggregating_Stand_Volume_Growth_to_Individual_Trees_IFTNC_1992
Type:
text
Format:
application/pdf

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Preferred Citation:
"Disaggregating Stand Volume Growth To Individual Trees", Idaho Forestry Research Collection, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/forestryresearch/items/forestryresearch874.html
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Educational use includes non-commercial use of text and images in materials for teaching and research purposes. Digital reproduction rights granted by University of Idaho Library. For other uses beyond educational use, please contact University of Idaho Library Special Collections and Archives Department at libspec@uidaho.edu.
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