Caracterização físico-hídrica do solo em microbacia hidrográfica do Rio Paraíba do Sul.

Abstract

This work is about the soil physical hydric caracterization in micro basin hydrographic of Paraíba do Sul River, in the city of Varre-Sai, located in the northwest of the Rio de Janeiro State. The characterization physical-hydric of the ground allows to value the level of tendency the erosive process in micro basin. To get this result were taken out samples in 25 spots along of the micro basin, observing the soil classification uses. Each sample’s spot were taken out two undisturbed and one disturbed samples in three different depths (horizon A, B and C). The laboratorial analysis of the sample determinate its texture, apparent density and the hydraulics conductivity. From the outside texts, the rate of the infiltration stable was determinated in ten different spots a long of the basin. The results showed in this work indicate a smaller tendency of the soil to the erosive process.