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BIOFIX Scientific Journal
Article . 2017 . Peer-reviewed
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BIOFIX Scientific Journal
Article
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BIOFIX Scientific Journal
Article . 2017
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COMPARAÇÃO DE MÉTODOS DE QUANTIFICAÇÃO DE CARBONO EM BRACATINGA (Mimosa scabrella Benth.)

Authors: Ana Paula Marques Martins; Renata Reis de Carvalho; Clarice de Andrade; Carlos Roberto Sanquetta;

COMPARAÇÃO DE MÉTODOS DE QUANTIFICAÇÃO DE CARBONO EM BRACATINGA (Mimosa scabrella Benth.)

Abstract

O trabalho teve como objetivo comparar métodos de quantificação de carbono em bracatinga. Foi determinada a biomassa fresca do fuste, galhos, folhas e raízes de 30 árvores provenientes de General Carneiro-PR. A biomassa fresca foi convertida em seca após as análises em laboratório. Os teores de carbono (TC) foram determinados no equipamento LECO C-144. Os estoques individuais de carbono foram obtidos pela multiplicação das biomassas secas pelos respectivos TC. Foram calculados os fatores de expansão de biomassa (FEB) e a Razão de Raízes (R). Os métodos de estimativa de carbono analisados foram: Biomassa do fuste (bf) combinada com FEB, R e teor médio de carbono (TCméd); bf combinada com FEB, R e teor ponderado de carbono (TCpond); e equações alométricas de simples, dupla e tripla entrada. A diferença entre as metodologias foi analisada mediante análise de variância e estatísticas complementares. Obteve-se os valores médios de FEB = 1,59 e R = 0,15, o que significa que 59% da biomassa aérea correspondem à copa e 15% da biomassa total são raízes. Não houve diferença estatística significativa entre as médias das metodologias de estimativas de carbono. A equação alométrica 3 foi a que apresentou o melhor desempenho porém, a equação 1, com apenas o dap como variável independente, propiciou resultados muito semelhantes a equação 3. De acordo com as estatísticas complementares, conclui-se que as equações propiciaram os melhores indicadores, seguidas da metodologia que emprega o teor de carbono ponderado, e, por último a que emprega o teor de carbono médio.

Keywords

TD172-193.5, Agriculture (General), TD169-171.8, Carbono, Equação alométrica, Fator de expansão de biomassa, Environmental protection, Environmental pollution, S1-972

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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