Abstract
SUMMARY Several investigations have shown that the growth increment of tropical tree species is strongly correlated with initial basal area. This investigation examined whether prediction of basal area increment could be improved by initially classifying trees according to canopy status, stem or'crown form, or degree of climber infestation. Classification according to stem form improved the prediction of tree basal area increment of Khaya ivorensis; canopy status also had a large effect but it was not significant. Classification according to climber infestation improved the prediction for Sterculia rhinopetala; greater infestation was associated with a reduction of the regression constant. The gain in accuracy was small in all cases. The ecological and silvicultural implications of these results are discussed. The correlations between successive increments did not substantially diminish over the 14 year period of observations.
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Claims 6
Claim · model-written summary
Stem-form classification improved prediction of Khaya ivorensis basal-area increment.
- Taxon
- Khaya ivorensis
Khaya ivorensise0 - Outcome
- prediction of tree basal area incremente0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Classification according to stem form improved the prediction of tree basal area increment of Khaya ivorensis”
Claim · model-written summary
Canopy status had a large but nonsignificant effect on prediction.
- Outcome
- large effecte0
Not reportedTaxon
Verbatim
e0“canopy status also had a large effect but it was not significant”
Claim · model-written summary
Climber-infestation classification improved prediction for Sterculia rhinopetala.
- Taxon
- Sterculia rhinopetalaSterculia rhinopetalae0
- Outcome
- predictione0
Not reportedComparatorValue
Verbatim
e0“Classification according to climber infestation improved the prediction for Sterculia rhinopetala”
Claim · model-written summary
Greater climber infestation was associated with a reduced regression constant.
Not reportedTaxonInteractor
Verbatim
e0“greater infestation was associated with a reduction of the regression constant”
Claim · model-written summary
Accuracy gains were small in all cases.
- Outcome
- gain in accuracye0
Not reportedTaxonComparatorValue
Verbatim
e0“The gain in accuracy was small in all cases”
Claim · model-written summary
Correlations between successive increments did not substantially diminish over 14 years.
Not reportedTaxonSetting
Verbatim
e0“The correlations between successive increments did not substantially diminish over the 14 year period of observations”