Data/hora: 09/06/2024 13:29:09

Provedor de dados: | 49
País: | Brazil
Título: | Allometric models for estimating the phytomass of a secondary Atlantic Forest area of southeastern Brazil
Autores: | Burger,Déborah Moreira; Delitti,Welington Braz Carvalho.
Data: | 2008-12-01
Ano: | 2008
Palavras-chave: | Biomass; Allometry; Carbon; Secondary Atlantic Forest; Forest biomass estimation.
Resumo: | The purpose of this study was to develop and validate equations to estimate the aboveground phytomass of a 30 years old plot of Atlantic Forest. In two plots of 100 m², a total of 82 trees were cut down at ground level. For each tree, height and diameter were measured. Leaves and woody material were separated in order to determine their fresh weights in field conditions. Samples of each fraction were oven dried at 80 °C to constant weight to determine their dry weight. Tree data were divided into two random samples. One sample was used for the development of the regression equations, and the other for validation. The models were developed using single linear regression analysis, where the dependent variable was the dry mass, and the independent variables were height (h), diameter (d) and d²h. The validation was carried out using Pearson correlation coefficient, paired t-Student test and standard error of estimation. The best equations to estimate aboveground phytomass were: lnDW = -3.068+2.522lnd (r² = 0.91; s y/x = 0.67) and lnDW = -3.676+0.951ln d²h (r² = 0.94; s y/x = 0.56).
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032008000400012
Editor: | Instituto Virtual da Biodiversidade | BIOTA - FAPESP
Relação: | 10.1590/S1676-06032008000400012
Formato: | text/html
Fonte: | Biota Neotropica  v.8 n.4 2008
Fonte: | info:eu-repo/semantics/openAccess