Spearman rank correlation analysis and grey relational grade analysis were used in the research for soil water infiltration characteristic of different forest lands in Simian Mountain.The results indicate that soil bulk density

the contents of grit and non-capillary porosity have significant correlations with soil saturated hydraulic conductivity.Non-capillary porosity and the contents of grit are positive correlated with soil saturated hydraulic conductivity.Soil bulk density is negative correlated with soil saturated hydraulic conductivity.Based on the initial infiltration rate

stable infiltration rate

infiltration time and cumulative infiltration which were the important parameters determining soil infiltration characteristic

the results from grey relational grade analysis show that the values of grey relational grade in different forest lands took turns as broadleaf forest(0.803 1)>P.pubescens forest(0.786 9)> mixed broadleaf-conifer forest(0.445 4)> coniferous forest(0.403 9).Broadleaf forest has the better infiltration capability between researched forest lands.The values of correlation coefficients which Horton infiltration model simulated in researched forest lands are more than 0.950

so it has good applicability for researched forestry soil infiltration processes in Simian Mountain.