The spatial variability of soil hydraulic properties influenced by topographic and soil physical and chemical factors is one of the key factors which have considerable effects on water flow and solute transport.An experiment was conduced on a 80m @ 40m plot.Saturated conductivity

Kfs

was measured at a depth of 30 cm

and soil physical and chemical properties were also considered

such as wetness index

bulk density

particle composition

organic matter

exchangeable sodium

CEC and ESP in the 24 sampling sites selected randomly.Based on classic statistics and the Kolmogorov) Smiromov(K)S) normality test

spatialst ructure was analyzed using the GIS+ for Window 5.The result indicated a normal distribution for Kfs

bulk density

organic matter

sand

clay and CEC

a lognormal distribution for exchangeable Na+ and ESP

and auniform distribution for silt.Kfs

bulk density

organic matter

sand

clay

exchangeable sodium and ESP showed the spatial correlation characteristic

but CEC had more distinct spatial heterogeneity than other factors.The influencing factors were also analyzed based on the correlation and PCA method.