Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/19221
Título: A tropical rainforest clearing experiment by biomass burning in the state of Para, Brazil
Autor: Araújo, Thaís Maia
Carvalho, João Andrade de
Higuchi, Niro
Brasil Junior, Antonio C.P.
Mesquita, André Luis Amarante
Palavras-chave: Biomass
Carbon Dioxide
Carbon Monoxide
Combustion
Fires
Gas Emissions
Rainforest Clearing
Forestry
Carbon
Biomass-burning
Emission
Forest Clearance
Tropical Forest
Air Analysis
Biomass
Cleaning
Combustion
Fire
Forest
Priority Journal
Para State
Data do documento: 1999
Revista: Atmospheric Environment
Encontra-se em: Volume 33, Número 13, Pags. 1991-1998
Abstract: Results are described of a forest clearing experiment conducted in Tome Acu, located approximately 250 km south of Belem, the capital of the Brazilian northern state of Para. An area of 3 ha of virgin forest was cut in July 1994 and left to dry until October of the same year, when fire was set. Post burning was also performed 30 days after the main fire. The test location biomass content per hectare was measured by indirect methods using formulas with parameters of forest inventories. The carbon content of the several biomass compartments was determined in a CHN analyzer. The combustion completeness was estimated by selecting ten 2 x 2 m2 areas and 24 large trunks and examining their consumption rates by fire. The 2 x 2 m2 areas were used to determine the completeness of small parts of biomass (those whose characteristic diameters were lower than 10 cm) and the trunks to determine the efficiency of the larger parts (characteristic diameters larger than 10 cm). The overall process combustion completeness was estimated to be 20.1%. Considering that the combustion gases of carbon in open fires contain approximately 90% of CO2 and 10% of CO in volumetric basis, the emission rates of these gases by the burning process were estimated as 70.2 and 5.0 t ha-1, respectively.Results are described of a forest clearing experiment conducted in Tome Acu, located approximately 250 km south of Belem, the capital of the Brazilian northern state of Para. An area of 3 ha of virgin forest was cut in July 1994 and left to dry until October of the same year, when fire was set. Post burning was also performed 30 days after the main fire. The test location biomass content per hectare was measured by indirect methods using formulas with parameters of forest inventories. The carbon content of the several biomass compartments was determined in a CHN analyzer. The combustion completeness was estimated by selecting ten 2×2 m2 areas and 24 large trunks and examining their consumption rates by fire. The 2×2 m2 areas were used to determine the completeness of small parts of biomass (those whose characteristic diameters were lower than 10 cm) and the trunks to determine the efficiency of the larger parts (characteristic diameters larger than 10 cm). The overall process combustion completeness was estimated to be 20.1%. Considering that the combustion gases of carbon in open fires contain approximately 90% of CO2 and 10% of CO in volumetric basis, the emission rates of these gases by the burning process were estimated as 70.2 and 5.0 t ha-1, respectively.
DOI: 10.1016/S1352-2310(98)00428-2
Aparece nas coleções:Artigos

Arquivos associados a este item:
Não existem arquivos associados a este item.


Os itens no repositório estão protegidos por copyright, com todos os direitos reservados, salvo quando é indicado o contrário.