Artigo

Comparison of formulae for biomass content determination in a tropical rain forest site in the state of Para, Brazil

The aboveground biomass content of a region can be estimated by either direct or indirect methods. The direct method corresponds to sampling the biomass content by weighing and extrapolating results to larger areas. It is a destructive and very laborious procedure. The indirect method utilizes formu...

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Autor principal: Araújo, Thaís Maia
Outros Autores: Higuchi, Niro, Carvalho, João Andrade de
Grau: Artigo
Idioma: English
Publicado em: Forest Ecology and Management 2020
Assuntos:
Biomass
Productivity
Rainforest
Tropical Environment
Brasil
Acesso em linha: https://repositorio.inpa.gov.br/handle/1/19222
id oai:repositorio:1-19222
recordtype dspace
spelling oai:repositorio:1-19222 Comparison of formulae for biomass content determination in a tropical rain forest site in the state of Para, Brazil Araújo, Thaís Maia Higuchi, Niro Carvalho, João Andrade de Biomass Productivity Rainforest Tropical Environment Brasil The aboveground biomass content of a region can be estimated by either direct or indirect methods. The direct method corresponds to sampling the biomass content by weighing and extrapolating results to larger areas. It is a destructive and very laborious procedure. The indirect method utilizes formulas whose predictor parameters are obtained from forest inventories. Forest inventories are conducted with the purpose of planning exploitation and land use, and the data derived from inventory are frequently not suitable for biomass estimation. Problems with both these methods increase in the Amazon region, where little information is available on forest biomass. The objective of this paper is to compare a number of biomass equations taken from previous studies and establish an appropriate mathematical formula to estimate the vegetation weight of a particular region in the Amazon forest. A 0.2 ha area of 'terra firme' forest was chosen for the comparison. This effort was part of a major forest clearing experiment conducted in Tome Acu, a town located 250 km south of Belem, the capital of the Brazilian state of Para. The entire biomass in the 0.2 ha area was weighed A detailed inventory was carried out in the area prior to the cut and then the biomass was estimated with the inventory data inserted in the selected equations. Fourteen different biomass equations taken from previous studies were used. A comparison of the data of real mass and the mass obtained through the application of the fourteen formulas indicated that the two formulas more suitable for the region are given by (a) FW=αD(β)H(γ), where FW is total fresh weight (kg), D the diameter at breast height (cm), H the total height of the tree (m) and α, β, and γ the regression coefficients, equal to 0.026, 1.529, and 1.747, respectively, and (b) FW=αD(β)/(1-M), where α and β are 0.465 and 2.202, respectively, and M the moisture content, defined in terms of mass of moisture per unit mass of fresh biomass. The aboveground fresh biomass weight predicted by the above equations were within ±0.6% of the weight determined in the field. 2020-06-15T22:06:27Z 2020-06-15T22:06:27Z 1999 Artigo https://repositorio.inpa.gov.br/handle/1/19222 10.1016/S0378-1127(98)00470-8 en Volume 117, Número 1-3, Pags. 43-52 Restrito Forest Ecology and Management
institution Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional
collection INPA-RI
language English
topic Biomass
Productivity
Rainforest
Tropical Environment
Brasil
spellingShingle Biomass
Productivity
Rainforest
Tropical Environment
Brasil
Araújo, Thaís Maia
Comparison of formulae for biomass content determination in a tropical rain forest site in the state of Para, Brazil
topic_facet Biomass
Productivity
Rainforest
Tropical Environment
Brasil
description The aboveground biomass content of a region can be estimated by either direct or indirect methods. The direct method corresponds to sampling the biomass content by weighing and extrapolating results to larger areas. It is a destructive and very laborious procedure. The indirect method utilizes formulas whose predictor parameters are obtained from forest inventories. Forest inventories are conducted with the purpose of planning exploitation and land use, and the data derived from inventory are frequently not suitable for biomass estimation. Problems with both these methods increase in the Amazon region, where little information is available on forest biomass. The objective of this paper is to compare a number of biomass equations taken from previous studies and establish an appropriate mathematical formula to estimate the vegetation weight of a particular region in the Amazon forest. A 0.2 ha area of 'terra firme' forest was chosen for the comparison. This effort was part of a major forest clearing experiment conducted in Tome Acu, a town located 250 km south of Belem, the capital of the Brazilian state of Para. The entire biomass in the 0.2 ha area was weighed A detailed inventory was carried out in the area prior to the cut and then the biomass was estimated with the inventory data inserted in the selected equations. Fourteen different biomass equations taken from previous studies were used. A comparison of the data of real mass and the mass obtained through the application of the fourteen formulas indicated that the two formulas more suitable for the region are given by (a) FW=αD(β)H(γ), where FW is total fresh weight (kg), D the diameter at breast height (cm), H the total height of the tree (m) and α, β, and γ the regression coefficients, equal to 0.026, 1.529, and 1.747, respectively, and (b) FW=αD(β)/(1-M), where α and β are 0.465 and 2.202, respectively, and M the moisture content, defined in terms of mass of moisture per unit mass of fresh biomass. The aboveground fresh biomass weight predicted by the above equations were within ±0.6% of the weight determined in the field.
format Artigo
author Araújo, Thaís Maia
author2 Higuchi, Niro
Carvalho, João Andrade de
author2Str Higuchi, Niro
Carvalho, João Andrade de
title Comparison of formulae for biomass content determination in a tropical rain forest site in the state of Para, Brazil
title_short Comparison of formulae for biomass content determination in a tropical rain forest site in the state of Para, Brazil
title_full Comparison of formulae for biomass content determination in a tropical rain forest site in the state of Para, Brazil
title_fullStr Comparison of formulae for biomass content determination in a tropical rain forest site in the state of Para, Brazil
title_full_unstemmed Comparison of formulae for biomass content determination in a tropical rain forest site in the state of Para, Brazil
title_sort comparison of formulae for biomass content determination in a tropical rain forest site in the state of para, brazil
publisher Forest Ecology and Management
publishDate 2020
url https://repositorio.inpa.gov.br/handle/1/19222
_version_ 1787142976641695744
score 11.755432

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