Allometric equations for four valuable tropical tree species
Four tree species were harvested periodically over a 13-year period from plantations in the humid lowlands of Costa Rica: Cedrela odorata, Cordia alliodora, Hyeronima alchorneoides, and Euterpe oleracea. The soil was a well-drained, volcanic alluvium, and high fertility coupled with 4 m of annual rainfall and high temperatures led to rapid growth rates; at age 13 many individual were >30 cm dbh and >30 m tall. Harvested trees were dissected into their component parts: leaves, rachises (for Cedrela and Euterpe), branches, boles, and coarse roots (i.e., >0.5 cm diameter). Roots of small trees were excavated in their entirety; those of large trees were harvested from a cylinder 1.0 m in diameter, immediately beneath the trunk. Large numbers of trees were sampled: 258–379 per species. Size classes sampled ranged from seedlings too small to have a dbh to trees of ∼30 cm dbh. Based on breaks in linear trends of ln–ln plots and deviations of predicted from actual values, we developed separate allometric equations, by component, for trees of different sizes. The resulting 40 equations (with one exception, involving very small trees) fit the data well and enable the user to predict biomass, by component, for each of the four species. Large sample sizes, a 13-year run of data collection, and the economic and ecological importance of the species studied make this data set uniquely useful for biomass estimations and for understanding the inherent heterogeneity of tree structure in dynamic tropical environments.
| Main Authors: | , |
|---|---|
| Format: | Texto biblioteca |
| Language: | eng |
| Published: |
Países Bajos Elsevier
2006
|
| Subjects: | CEDRELA ODORATA, HYERONIMA ALCHORNEOIDES, EUTERPE OLERACEA, ARBOLES, ALOMETRIA, BIOMASA, CRECIMIENTO, MEDICION, TALLOS, RAICES, TRONCO, PLANTACION FORESTAL, TIERRAS BAJAS, ESTACION BIOLOGICA LA SELVA, ECUACIONES ALOMETRICAS, SECUESTRO DE CARBONO, HOJAS, CORDIA ALLIODORA, |
| Online Access: | http://orton.catie.ac.cr/repdoc/A11127i/A11127i.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|