z-logo
open-access-imgOpen Access
ALOCAÇÃO E MODELAGEM DA BIOMASSA EM Dendrocalamus asper
Author(s) -
Francelo Mog,
Aurélio Lourenço Rodrigues,
Carlos Roberto Sanquetta,
Ana Paula Dalla Côrte,
Adalberto Brito de Novaes,
Christopher Thomas Blum
Publication year - 2014
Publication title -
floresta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.386
H-Index - 13
eISSN - 1982-4688
pISSN - 0015-3826
DOI - 10.5380/rf.v45i1.35094
Subject(s) - horticulture , biomass (ecology) , mathematics , biology , agronomy
O objetivo deste trabalho foi quantificar a biomassa seca total individual de plantas de bambu da especie Dendrocalamus asper (Schult. & Schult. f.) Backer ex K. Heyne, visando conhecer a sua distribuicao nos diferentes compartimentos, bem como avaliar modelos de biomassa em funcao de variaveis biometricas das plantas. Foram avaliados 20 individuos, coletados em Bauru, SP. As plantas amostradas foram medidas, abatidas e pesadas. A maior fracao da biomassa foi observada na parte aerea, com 86%, sendo 64% para o compartimento colmo, 16% para os galhos e 6% para as folhas. Os rizomas representaram 14% da biomassa total. As variaveis biometricas (diâmetro a altura do peito – DAP, altura total – ht e diâmetro de colo – Dcolo) correlacionaram-se significativamente com as biomassas total e do colmo. O modelo que apresentou o melhor desempenho para a biomassa total teve como variavel independente apenas o DAP, enquanto que para a biomassa dos colmos foi a variavel combinada dap 0,5 *lndap. Os ajustes para os demais compartimentos nao geraram resultados satisfatorios, em funcao da baixa correlacao entre as variaveis biometricas e suas biomassas. Concluiu-se que e possivel expressar a biomassa seca total e do colmo do bambu por meio de modelos alometricos, porem o mesmo nao se aplica aos demais compartimentos. Palavras-chave : Bambu; fitomassa; modelos alometricos. Abstract Allocation and modeling of biomass of Dendrocalamus asper . The aim of this research was to quantify the total individual biomass of bamboo plants of the species Dendrocalamus asper (Schult. & Schult. f.) Backer ex K. Heyne, in order to understand its distribution along different compartments, as well as evaluat biomass models according to biometric variables. Twenty individuals collected in Bauru, SP were evaluated. The plants were measured, cut and weighed. The aboveground biomass accounted for the major fraction, representing 86%. The stem compartment represented 64% of total biomass, followed by the branches, with 16% and leaves, with 6%. Rhizomes accounted for 14% of the total biomass. The biometric variables (diameter at breast height - dbh, total height – ht, and collar diameter - dcollar) were significantly correlated with total and stem biomass. The model that revealed best performance for total biomass had only dap as independent variable, for the stems biomass the combined variable was dap 0,5 *lndap. The adjustments for other compartments were not satisfactory due to low correlation between the biometric variables and their biomass. As conclusion, it is possible to express the total  dry stem biomass and culm mass of bamboo using allometric models, however, the same does not apply to other compartments. Keywords : Bamboo; phytomass; allometric models.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.
Having issues? You can contact us here
Accelerating Research

Address

John Eccles House
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom