home
focus and scope
journal policies
Focus and scope Peer review process Openness and transparency Publication frequency Archiving Article processing charges Criteria for authorship and contributors Conflicts of interest Allegations of misconduct Complaints process Sponsors Journal History
author instructions
General Metadata Article Categories Openness and transparency Submission of manuscripts Manuscript text Citation standards Tables and figures Acknowledgements, funding and availability of research materials and data Supplementary files Procedures for revised and accepted manuscripts
special issues
editors
open access
other journals
Metsätieteen aikakauskirja Dissertationes Forestales Suo - Mires and Peat
contact
financial information
Full text of this article is only available in PDF format.

Pekka Kilkki (email), Martti Varmola

A nonlinear simultaneous equation model to determine taper curve.

Kilkki P., Varmola M. (1979). A nonlinear simultaneous equation model to determine taper curve. Silva Fennica vol. 13 no. 4 article id 5047. https://doi.org/10.14214/sf.a14904

Abstract

In the original set of equations derived by regression analysis, relative-height diameters (endogenous variables) are presented as nonlinear functions of the other relative-height diameters and of the height of the tree (an exogenous variable). Any of the original equations can be replaced by an interpolation formula which links a measured diameter to the four closest relative-height diameters. The solution of the simultaneous equation model yields 10 relative-height diameters. Intermediate values are obtained to avoid biases due to the nonlinearity of the simultaneous model equations.

The PDF includes a summary in Finnish.

Keywords
Pinus sylvestris; diameter; mathematical models; taper curve

Published in 1979

Views 1871

Available at https://doi.org/10.14214/sf.a14904 | Download PDF

Creative Commons License CC BY-SA 4.0
Register
Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content
Export reference to EndNote / RefWorks
Related articles
Your selected articles
Your search results
Ruha T., Varmola M. (1997) Precommercial thinning in naturally regenerated .. Silva Fennica vol. 31 no. 4 article id 5635
Salminen H., Varmola M. (1993) Influence of initial spacing and planting design.. Silva Fennica vol. 27 no. 1 article id 5495
Varmola M., (1989) A model for ring width of planted Scots pine Silva Fennica vol. 23 no. 4 article id 5388
Kilkki P., Varmola M. (1979) A nonlinear simultaneous equation model to deter.. Silva Fennica vol. 13 no. 4 article id 5047
Kilkki P., Saramäki M. et al. (1978) A simultaneous equation model to determine taper.. Silva Fennica vol. 12 no. 2 article id 4995
Kilkki P., Varmola M. (1981) Taper curve models for Scots pine and their appl.. Acta Forestalia Fennica vol. 0 no. 174 article id 7621
Varmola M., Salminen H. et al. (2004) Thinning response and growth trends of seeded Sc.. Silva Fennica vol. 38 no. 1 article id 436
Silva Fennica · Finnish Society of Forest Science