| Registro completo |
| Provedor de dados: |
Acta Amazonica
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| País: |
Brazil
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| Título: |
Biomass equations for forest regrowth in the eastern Amazon using randomized branch sampling
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| Autores: |
Ducey,Mark Jonathan
Zarin,Daniel Jacob
Vasconcelos,Steel Silva
Araújo,Maristela Machado
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| Data: |
2009-01-01
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| Ano: |
2009
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| Palavras-chave: |
Allometry
Allometric equations
Secondary growth
Tropical forest
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| Resumo: |
Forest regrowth occupies an extensive and increasing area in the Amazon basin, but accurate assessment of the impact of regrowth on carbon and nutrient cycles has been hampered by a paucity of available allometric equations. We develop pooled and species-specific equations for total aboveground biomass for a study site in the eastern Amazon that had been abandoned for 15 years. Field work was conducted using randomized branch sampling, a rapid technique that has seen little use in tropical forests. High consistency of sample paths in randomized branch sampling, as measured by the standard error of individual paths (14%), suggests the method may provide substantial efficiencies when compared to traditional procedures. The best fitting equations in this study used the traditional form Y=a×DBHb, where Y is biomass, DBH is diameter at breast height, and a and b are both species-specific parameters. Species-specific equations of the form Y=a(BA×H), where Y is biomass, BA is tree basal area, H is tree height, and a is a species-specific parameter, fit almost as well. Comparison with previously published equations indicated errors from -33% to +29% would have occurred using off-site relationships. We also present equations for stemwood, twigs, and foliage as biomass components.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672009000200013
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| Editor: |
Instituto Nacional de Pesquisas da Amazônia
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| Relação: |
10.1590/S0044-59672009000200013
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| Formato: |
text/html
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| Fonte: |
Acta Amazonica v.39 n.2 2009
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| Direitos: |
info:eu-repo/semantics/openAccess
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