Erosão laminar e atributos físico-químicos de solos próximos a Usina Hidrelétrica Luiz Gonzaga/PE.

Abstract

The aim of this study was to characterize and correlate physical and chemical attributes of soils in different stages of laminar erosion at sites around Luiz Gonzaga hydroelectric power station. In general, the sites were constituted by sandy soils. Sites with erosive process in initial stage presented deeper A and C horizons, lower soil acidity and the highest number of correlations between physical and chemical variables, pointing out the amount of C correlation with both Ca and Mg, and the H correlation with both C and organic matter. In contrast, a low number of correlations occurred in sites with erosive process in intermediate stage, pointing out the loan and Al correlation. Sites with erosive process in severe stage presented high amount of Na, mainly in the Luvissolo Crômico Órtico soil, high amount of organic matter and high number of correlations, pointing out the correlation of Na and H with C, N, and organic matter amounts.