Abstract
This paper analyzed the soil albedo (αsoil) below the canopy considering two steps in the hydrological cycle, the first when the soil was flooded and the second when the soil was covered with litterpool in a flooded area of Vochysia divergens Pohl in the Pantanal, Brazil. The values of αsoil were calculated by the ratio between the reflected solar radiation and incident solar radiation measured below the canopy through weather stations. The flooding occurred during February-June with posterior gradual increase in the litterpool. The αsoil varied seasonally with higher values increasing approximately 42% of the soil albedo during the dry period compared to the inundation period. Cross-correlation analysis between αsoil and accumulated rainfall, soil moisture and litterpool may partly explain the direct and/or indirect influence on the αsoil. The rainfall did not influence directly on the αsoil of the current month, while the soil moisture influenced directly on the αsoil in the current month and the following months, the litterpool and αsoil were positively correlated in the current month indicating direct influence on the αsoil.
Keywords:
cambarazal; litterpool; moisture soil; soil reflectance
