Spatial Distribution of Soil Hydrological Properties in the Kilombero Floodplain, Tanzania

摘要: Analysis and interpretation of soil properties dynamics is a keystone in understanding the hydrologic responses yield potential floodplain wetlands. This study characterizes distribution spatial trends selected physical Kilombero floodplain, Tanzania. A total 76 composite samples were taken from 0 to 20 cm 40 depth regular grid design across three hydrological zones, related flooding intensity defined as fringe, middle, riparian during rainy season 2015. The analyzed for texture, bulk density, organic carbon, saturated hydraulic conductivity. Seasonal moisture content was monitored at depths 10, 20, 30, cm, using 17 frequency domain reflectometry profile probes type PR2, installed each zone 18 months (March 2015–August 2016). Data subjected classical statistical geostatistical analyses. Results showed significant (p < 0.05) differences carbon (SOC), conductivity (Ksat) zones. Bulk density clear increasing trend towards fringe zone. Mean Ksat highest (69.15 cm·d−1), clay higher (20.3%) middle (28.7%) whereas had percentage sand (33.7–35.9%). Geostatistical results indicated that silt, SOC 0–20 intermediate dependence, other both high dependence. Soil difference retained compared temporal pattern corresponded rainfall seasonality zone, exhibited convex shape sloping curve, concave curve topsoil subsoil observed start dry season. Our are seen contribute better reference water management planning floodplain.