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| Content Provider | Springer Nature Link |
|---|---|
| Author | Trincado, Guillermo VanderSchaaf, Curtis L. Burkhart, Harold E. |
| Copyright Year | 2006 |
| Abstract | A height–diameter mixed-effects model was developed for loblolly pine (Pinus taeda L.) plantations in the southeastern US. Data were obtained from a region-wide thinning study established by the Loblolly Pine Growth and Yield Research Cooperative at Virginia Tech. The height–diameter model was based on an allometric function, which was linearized to include both fixed- and random-effects parameters. A test of regional-specific fixed-effects parameters indicated that separate equations were needed to estimate total tree heights in the Piedmont and Coastal Plain physiographic regions. The effect of sample size on the ability to estimate random-effects parameters in a new plot was analyzed. For both regions, an increase in the number of sample trees decreased the bias when the equation was applied to independent data. This investigation showed that the use of a calibrated response using one sample tree per plot makes the inclusion of additional predictor variables (e.g., stand density) unnecessary. A numerical example demonstrates the methodology used to predict random effects parameters, and thus, to estimate plot specific height–diameter relationships. |
| Starting Page | 253 |
| Ending Page | 262 |
| Page Count | 10 |
| File Format | |
| ISSN | 16124669 |
| Journal | Forstwissenschaftliches Centralblatt vereinigt mit Tharandter forstliches Jahrbuch |
| Volume Number | 126 |
| Issue Number | 2 |
| e-ISSN | 16124677 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2007-04-01 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Height–diameter relationship Forest inventory Linear mixed-effects model Pinus taeda Forestry Plant Sciences Plant Ecology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Plant Science Forestry |
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