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Economic Analysis of a Tree Improvent Program for Westerm Larch Item Info

An individual-tree simulation model called Prognosis and an economic subroutine called CHEAPO were used to determine financial rotation ages (in this analysis defined as the age at which net present value is maximized) for stands grown with genetically improved and unimproved western larch (Larix occidentalis) in north Idaho. Three hypothetical but reasonable growth functions were tested on two site classes. Sensitivity analyses showed that the tree improvement investment was likely to be profitable at 4 and 5 percent discount rates on excellent sites and at 4 percent on good sites. The analysis was most sensitive to changes in discount rate, site quality, and cone production rate. It was moderately sensitive to variation in time to seed production, number of productive orchard years, and differences among the assumed biological functions. As the hypothetical growth functions were designed to be conservative, economic gains are likely to be larger than those indicated in the analysis.

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Title:
Economic Analysis of a Tree Improvent Program for Westerm Larch
Creator:
Fins, L.; Moore, J.A.
Date Created (ISO Standard):
1984-11-01
Description:
An individual-tree simulation model called Prognosis and an economic subroutine called CHEAPO were used to determine financial rotation ages (in this analysis defined as the age at which net present value is maximized) for stands grown with genetically improved and unimproved western larch (Larix occidentalis) in north Idaho. Three hypothetical but reasonable growth functions were tested on two site classes. Sensitivity analyses showed that the tree improvement investment was likely to be profitable at 4 and 5 percent discount rates on excellent sites and at 4 percent on good sites. The analysis was most sensitive to changes in discount rate, site quality, and cone production rate. It was moderately sensitive to variation in time to seed production, number of productive orchard years, and differences among the assumed biological functions. As the hypothetical growth functions were designed to be conservative, economic gains are likely to be larger than those indicated in the analysis.
Subjects:
research (document genres)
Location:
North and Central Idaho; Eastern Washington; Western Montana; Northeastern Oregon
Publisher:
Journal of Forestry
Source:
Fins, L. and J.A. Moore. 1984. Economic Analysis of A Tree Improvement Program for Western Larch. vol 82 no. 11 pp 675 - 679.
Source Identifier:
Economic_Analysis_of_An_Improvement_Progam_for_Western_Larch_JOF_082_011_1984
Type:
text
Format:
application/pdf

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Source
Preferred Citation:
"Economic Analysis of a Tree Improvent Program for Westerm Larch", Idaho Forestry Research Collection, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/forestryresearch/items/forestryresearch866.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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