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Record W2146002208 · doi:10.1139/x07-109

Forest-level analyses of uneven-aged hardwood forests

2008· article· en· W2146002208 on OpenAlexafffundvenueabout
Feng’e Yang, Shashi Kant

Bibliographic record

VenueCanadian Journal of Forest Research · 2008
Typearticle
Languageen
FieldEnvironmental Science
TopicForest ecology and management
Canadian institutionsUniversity of Toronto
FundersNatural Sciences and Engineering Research Council of CanadaMinistry of Natural Resources
KeywordsBasal areaMapleBeechHardwoodForest managementEcologyDiversity (politics)ForestryOld-growth forestResidualMathematicsGeographyEnvironmental scienceAgroforestryBiology

Abstract

fetched live from OpenAlex

The matrix growth models of maple–beech and maple stands in the uneven-aged mixed species hardwood forests in the Algonquin region of Ontario are specified as a system of simultaneous growth equations with restrictions on the sum of transition probabilities. The specified system of growth equations is estimated using the seemingly unrelated regression technique. The estimated matrix growth models are used to predict the growth dynamics of stands. Linear and nonlinear programming models are used to seek optimal management regimes and to analyze the trade-offs between financial returns and structural diversity at the forest level as well as at the stand level. The optimal harvesting schedules obtained at the forest level without ecological (residual basal area or structural diversity) constraints are identical with those obtained at the stand level; however, for higher structural diversity at the forest level, the optimal harvesting schedules based on forest-level decision making are found to be different from those based on stand-level decision making.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.001
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.074
Threshold uncertainty score0.147

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

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.

Opus teacher head0.128
GPT teacher head0.349
Teacher spread0.221 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations5
Published2008
Admission routes4
Has abstractyes

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