Spatial and fractal characterization of soil hydraulic properties along a catena

Soil hydraulic properties influence water and nutrient availability as well environmental sustainability, these vary across several landscape positions. This study investigated the spatial variability fractal characterization of soil five slope positions: summit, shoulder, back, foot, toe slopes. Triplicate samples (0–18 cm) were collected from each position a pasture field planted to tall fescue [Festuca arundinacea Schreb., syn. schendonorus arundinaceus (Schreb.) Dumort., nom. cons.]. bulk density (ρb); saturated conductivity (Ksat); retention at 0, −33, −1,500 kPa matric potentials; organic carbon (SOC); various pore sizes (macropores [>1,000 μm], mesopores [10–1,000 micropores [<10 μm]) analyzed. Results show that SOC was 26% higher, while ρb 10% lower compared with summit. Similarly, Ksat values 3, 9, 16, 2% greater foot slopes, respectively. Semivariogram analysis showed gaussian isotropic model provided best fit (R2 > .99) for all The range between 5.60 123.00 m dimensions positions ranged 0.784 1.966. similar which might favor improved crop productivity