Volume and biomass of trees in central Amazonia: influence of irregularly shaped and hollow trunks
Conventional measurements of diameter, basal area and volume of the bole assume that any cross section of the bole is circular and that the bole is a solid of revolution. These assumptions lead to error when the bole is irregularly shaped and/or hollow. These errors were quantified for trees in cent...
| Autor principal: | Nogueira, Euler Melo |
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| Outros Autores: | Nelson, Bruce Walker, Fearnside, Philip Martin |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Forest Ecology and Management
2020
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| Assuntos: | |
| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18751 |
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oai:repositorio:1-18751 |
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oai:repositorio:1-18751 Volume and biomass of trees in central Amazonia: influence of irregularly shaped and hollow trunks Nogueira, Euler Melo Nelson, Bruce Walker Fearnside, Philip Martin Biomass Data Reduction Basal Area Hollow Trees Irregularities Of The Bole Volume Of The Bole Forestry Basal Area Error Correction Phytomass Tree Biomass Data Processing Trees Amazonia South America Conventional measurements of diameter, basal area and volume of the bole assume that any cross section of the bole is circular and that the bole is a solid of revolution. These assumptions lead to error when the bole is irregularly shaped and/or hollow. These errors were quantified for trees in central Amazonia after adjusting the number of trees sampled in each class based on the diameter distribution of a large inventory. For large trees (DBH ≥50 cm) total basal area was overestimated by 30%, while the overestimate was 11% for all trees with DBH ≥5 cm. The total bole volume per hectare was overestimated by 11.2% (∼40 m3/ha). Most of this volume correction is attributed to the non-circular form of the cross section; the effect of hollow areas on the volume of the bole was only 0.7%. For trees above 31.8 cm DBH, which is the minimum diameter in the Projeto RADAMBRASIL inventories, the volume per hectare was overestimated by 4.4% using conventional measurements. Because of compensating errors in commonly used formulas, however, the volume overestimate associated with conventional methods does not imply biomass overestimation in studies that have used the RADAMBRASIL dataset. © 2006 Elsevier B.V. All rights reserved. 2020-06-15T22:02:52Z 2020-06-15T22:02:52Z 2006 Artigo https://repositorio.inpa.gov.br/handle/1/18751 10.1016/j.foreco.2006.02.004 en Volume 227, Número 1-2, Pags. 14-21 Restrito Forest Ecology and Management |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Biomass Data Reduction Basal Area Hollow Trees Irregularities Of The Bole Volume Of The Bole Forestry Basal Area Error Correction Phytomass Tree Biomass Data Processing Trees Amazonia South America |
| spellingShingle |
Biomass Data Reduction Basal Area Hollow Trees Irregularities Of The Bole Volume Of The Bole Forestry Basal Area Error Correction Phytomass Tree Biomass Data Processing Trees Amazonia South America Nogueira, Euler Melo Volume and biomass of trees in central Amazonia: influence of irregularly shaped and hollow trunks |
| topic_facet |
Biomass Data Reduction Basal Area Hollow Trees Irregularities Of The Bole Volume Of The Bole Forestry Basal Area Error Correction Phytomass Tree Biomass Data Processing Trees Amazonia South America |
| description |
Conventional measurements of diameter, basal area and volume of the bole assume that any cross section of the bole is circular and that the bole is a solid of revolution. These assumptions lead to error when the bole is irregularly shaped and/or hollow. These errors were quantified for trees in central Amazonia after adjusting the number of trees sampled in each class based on the diameter distribution of a large inventory. For large trees (DBH ≥50 cm) total basal area was overestimated by 30%, while the overestimate was 11% for all trees with DBH ≥5 cm. The total bole volume per hectare was overestimated by 11.2% (∼40 m3/ha). Most of this volume correction is attributed to the non-circular form of the cross section; the effect of hollow areas on the volume of the bole was only 0.7%. For trees above 31.8 cm DBH, which is the minimum diameter in the Projeto RADAMBRASIL inventories, the volume per hectare was overestimated by 4.4% using conventional measurements. Because of compensating errors in commonly used formulas, however, the volume overestimate associated with conventional methods does not imply biomass overestimation in studies that have used the RADAMBRASIL dataset. © 2006 Elsevier B.V. All rights reserved. |
| format |
Artigo |
| author |
Nogueira, Euler Melo |
| author2 |
Nelson, Bruce Walker Fearnside, Philip Martin |
| author2Str |
Nelson, Bruce Walker Fearnside, Philip Martin |
| title |
Volume and biomass of trees in central Amazonia: influence of irregularly shaped and hollow trunks |
| title_short |
Volume and biomass of trees in central Amazonia: influence of irregularly shaped and hollow trunks |
| title_full |
Volume and biomass of trees in central Amazonia: influence of irregularly shaped and hollow trunks |
| title_fullStr |
Volume and biomass of trees in central Amazonia: influence of irregularly shaped and hollow trunks |
| title_full_unstemmed |
Volume and biomass of trees in central Amazonia: influence of irregularly shaped and hollow trunks |
| title_sort |
volume and biomass of trees in central amazonia: influence of irregularly shaped and hollow trunks |
| publisher |
Forest Ecology and Management |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18751 |
| _version_ |
1787141938051284992 |
| score |
11.755432 |