A nonlinear simultaneous equation model to determine taper curve.
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 replace...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Finnish Society of Forest Science
1979-01-01
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| Series: | Silva Fennica |
| Online Access: | https://www.silvafennica.fi/article/5047 |
| Summary: | 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. |
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| ISSN: | 2242-4075 |