The probabilistic distribution of the scale factor of superficial layer was determined, considering the similar fractal theory for two soils in the Paraíba State. The study was performed at two experimental sites, with different climate and soil conditions of approximately 4 ha. The first was located in the Várzea Grande farm, in the municipality of São João do Cariri, PB (7º23'S e 36º31'O). The soil was classified as Fluvent. The second was located in the Centro de Ciências Agrárias, of the UFPB, in the municipality of Areia, PB (6º58'S, 35º41'W). The soil was classified as Oxisol. To estimate the soil saturated hydraulic conductivity, infiltration experiments were performed using a ring infiltrometer (15 cm diameter) on the soil surface, at 80 points on a regular mesh of 25 x 25 m. For both soils, the logarithms of the scale factors followed a Gaussian distribution or normal distribution. The probabilistic distribution function allowed the estimation of the fractal dimension of the porous media that represent the studied soils.
scale factor; hydraulic conductivity; fractal dimension
