Estoque de energia na biomassa e no ar do dossel de Vochysia divergens Pohl

Abstract

R E S U M OA variação da energia armazenada na biomassa e no ar do dossel pode ser estimada por meio de medidas da temperatura da biomassa e do ar e da distribuição da biomassa, constituindo-se um componente significativo do balanço de energia. Apesar de que estimativas acuradas desse componente do balanço de energia são de difícil obtenção e normalmente desprezadas nos cálculos, sobretudo em análises de períodos longos. Colaborando com a compreensão do fechamento do balanço de energia existente na floresta, este trabalho estimou o estoque de energia disponível na biomassa por meio de dados micrometeorológicos em uma floresta de Vochysia divergens Pohl no Pantanal, em 2007. O armazenamento de energia na biomassa e no ar do dossel foi superior na estação chuvosa em relação à seca; entretanto, a diferença entre o valor máximo e mínimo horário foi maior durante a estação seca. Os valores de armazenamento de energia na biomassa e no ar do dossel em floresta de V. divergens no Pantanal foram, em 2007, similares à energia armazenada em outras florestas tropicais. Energy storage in the biomass and air of the canopy of Vochysia divergens Pohl A B S T R A C TThe variation of the storage energy in the biomass and in the air of the canopy can be estimated by measuring biomass and air temperature and biomass distribution being a significant component of energy balance. Nevertheless, accurate estimates of this component of energy balance are difficult to obtain and usually neglected in the calculations, especially in analysis of long periods. To understand the energy balance in the forest, this study estimated the energy stored in biomass using micrometeorological data in a forest monodominant Vochysia divergens Pohl in Pantanal in 2007. The energy stored in the biomass and in the air of the canopy (S) was higher in rainy season than in dry season, however, the difference between maximum and minimum values was higher during the dry season. The values of S in V. divergens forest in Pantanal in 2007 were similar to storage energy in the other tropical forests. Palavras-chave:área alagada balanço de energia inundação Pantanal sazonalidade

Monitoring environmental indicators by coupling remote sensing and weather data: applications to the Brazilian biomes

“…The average BIO for PT at the annual scale was 28.9 t ha -1 yr -1 . According to Sanches et al (2014), BIO for the PT biome is a little higher during the rainy season when the RG levels are also high, what agree with the period from Q1 to Q2 of the current study.…”

Remote sensing environmental indicators for monitoring spatial and temporal dynamics of water and vegetation conditions: applications to the Brazilian biomes

“…However, according to Sanches et al (2014), BIO in Pantanal is a little higher during the rainy season when solar radiation levels are also high, what agrees with the period from January to June (Q1 to Q2) of the current study.…”