1994
DOI: 10.1017/s0266467400007859
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Evaluation of regression models for above-ground biomass determination in Amazon rainforest

Abstract: In a mature lowland ‘terra firme’ forest near Araracuara in Colombia, a study was conducted to determine the above-ground biomass by means of regression analysis. Dry weight, DBH (i.e. stem diameter at 1.3 m above ground level, or just above buttresses if these surpassed 1.3 m in height), total height and specific wood density were measured on 54 harvested trees, chosen in a ‘selected random’ manner. Nine different regression models were evaluated for statistical correctness, accuracy of the estimates and for … Show more

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Cited by 188 publications
(139 citation statements)
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“…Live biomass was estimated for sampling categories and size classes by the following equations: forest tree species > 10 cm: DW (dry weight) = 0.465*(dbh) 2.202 (Overman et al,1994); forest tree species < 10 cm: log(DW) = -0.85 + 2.57*log(dbh) (Gerwing, 2002); Cecropia sp: ln(DW) = -2.512 + 2.426*ln(dbh) (Nelson et al, 1999); lianas: log (DW) = 0.07 + 2.17*log(dbh) (Gerwing & Farias, 2000). Dbh is stem diameter measured at 1.3 m height.…”
Section: Discussionmentioning
confidence: 99%
“…Live biomass was estimated for sampling categories and size classes by the following equations: forest tree species > 10 cm: DW (dry weight) = 0.465*(dbh) 2.202 (Overman et al,1994); forest tree species < 10 cm: log(DW) = -0.85 + 2.57*log(dbh) (Gerwing, 2002); Cecropia sp: ln(DW) = -2.512 + 2.426*ln(dbh) (Nelson et al, 1999); lianas: log (DW) = 0.07 + 2.17*log(dbh) (Gerwing & Farias, 2000). Dbh is stem diameter measured at 1.3 m height.…”
Section: Discussionmentioning
confidence: 99%
“…Diante disso, é preciso ter uma boa idéia do mundo real, entendendo o relacionamento existente entre a biomassa florestal e outras variáveis da árvore, antes de se chegar ao mundo matemático. Na Amazônia Central, esta questão está parcialmente resolvida com o desenvolvimento e validação de equações alométricas para estimar a biomassa acima do nível do solo, de árvores em pé (Overman et al, 1994;Higuchi et al, 1994;Santos, 1996.…”
unclassified
“…Amostragem e análise de dados -A amostragem foi baseada na distribuição da vegetação em classes de diâmetro (DAP) apresentada por MKR & Embraport (2005), garantindo a coleta de árvores de todos os tamanhos para a construção dos modelos (Overman et al 1994 As árvores selecionadas foram amostradas por método destrutivo (Whittaker et al 1974, Chapman 1976, Golley et al 1978. Destas foram tomadas medidas de circunferência à altura do peito (1,3 m), com fita métrica comum, e de altura total, com trena, após sua derrubada.…”
Section: Methodsunclassified