Variação espaço-temporal dos fluxos radiativos abaixo do dossel em floresta sazonalmente alagada no Pantanal mato-grossense

Abstract

The current literature of environmental and hydrological sciences need in situ studies, especially long-term spatial data, and the transmittance and reflectance of surfaces data are crucial for studies of physical and agronomic diversity and biological processes such as evapotranspiration, photosynthesis, autotrophic and heterotrophic respiration, deforestation, surface temperature changes, as well as climate changes caused by human activity. Thus, was analyzed the spatio-temporal variation of solar radiation and photosynthetically active radiation beneath the canopy in seasonally flooded forest in the brazilian Pantanal, monitoring 5 transects divided into 11 points, totaling 55 points . For the analysis of radiative fluxes was taken into account the local vegetation, leaf area index, soil moisture, water depth, litter, zenith angle, air temperature and relative humidity. Was concluded that the soil cover and vegetation type influence radiative fluxes, the reflectance of the soil beneath the canopy and canopy transmittance .