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Título: Allometric Equations for Estimating Biomass of Euterpe precatoria, the Most Abundant Palm Species in the Amazon
Niro Higuchi
Assunto: Carbono
Conservação Florestal
ISSN: 1999-4907
Revista: Forests
Volume: 6
Resumo: Allometric models to estimate biomass components such as stem mass M-s, foliage mass M-l, root mass M-r and aboveground mass M-a, were developed for the palm species Euterpe precatoria Mart., which is the most abundant tree species in the Amazon. We harvested twenty palms including above- and below-ground parts in an old growth Amazonian forest in Brazil. The diameter at breast height D ranged from 3.9-12.7 cm, and the stem height H ranged from 2.3-16.4 m. The D, diameter at ground basis D-0, crown diameter CD, H, stem specific gravity rho, and number of fronds N-f were considered as independent variables and incorporated into a power function model. The best predictors were (DH)-H-2 rho for M-s and M-a, (DHNf)-H-2 for M-l, and D for M-r. Slender index (H/D) ranged from 0.56-1.46 m center dot cm(-1), and the D-H relationship suggested that the stem shape becomes more slender with increasing D. On the other hand, rho increased with D implying a stiffening of stem tissue. The average root/shoot ratio was estimated as 0.29 which was higher than that reported for the non-palm tree species in the Amazon. Comparisons of several models to estimate M-a of different palm species, suggested that the variations of the D-H relationship and rho should be considered to develop allometric models for estimating biomass in palm species. In particular the rho largely varied depending on individual size, which should be important to consider, when developing the allometric models for palms.
ISSN: 1999-4907
Aparece nas coleções:Coordenação de Dinâmica Ambiental (CDAM)

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