Modeling the impact of thinning on height development of dominant and codominant loblolly pine trees
Bibliographic record
Abstract
Data collected from loblolly pine thinning study plots established in plantations on cutover, site-prepared lands were used to evaluate thinning impact on height growth of dominant and codominant loblolly pine trees.Height growth was reduced initially by thinning but was increased after 3 years following thinning.The average total height of dominant and codominant trees in thinned stands exceeded its counterpart in unthinned stands 12 years after thinning.Initial growth response to thinning was less at older stand ages than at younger ages.A model was constructed to characterize the development of height in thinned and unthinned stands.This model reflects the initial suppression of dominant and codominant height growth followed by an acceleration as a result of thinning.site index / thinning shock / thinning response function / Pinus taeda Résumé -Modélisation de l'impact de l'éclaircie sur le développement en hauteur des arbres dominants et codominants chez Pinus taeda L. Des données récoltées dans des dispositifs expérimentaux d'étude des éclaircies, installés dans des plantations de Pinus taeda, ont été utilisées pour évaluer l'impact de l'éclaircie sur la croissance en hauteur des arbres dominants et co-dominants.La croissance en hauteur a été initialement réduite par éclaircie, mais s'est accrue dans les 3 ans suivant l'éclaircie.La moyenne de la hauteur totale des arbres dominants et codominants dans les peuplements éclaircis est supérieure à celle des arbres dominants et codominants des peuplements non éclaircis, 12 ans après l'éclaircie.La réponse initiale en termes de croissance à l'éclaircie était plus faible dans les vieux peuplements que dans les peuplements jeunes.Un modèle a été construit pour caractériser l'évolution de la croissance en hauteur dans les peuplements éclaircis et les peuplements non éclaircis.Ce modèle reflète l'effet initial dépressif de l'éclaircie sur la croissance des arbres dominants et codominants suivi d'une accélération comme résultat de l'effet d'éclaircie.site index / effet de l'éclaircie / fonctions de réponse de l'éclaircie / Pinus taeda
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".