In the semiarid loess hilly and gully area of Southern Ningxia Hui Autonomous Region

the small watershed of Zhongzhuang in Pengyang County was chosen in view of the management effects of soil and water conservation.By using a light rainfall simulator and double-ring infiltrometers

infiltration rate was measured in the spots with different ecological restoration and reconstruction measures ( level trench

scale pit

level terraced field

artificial forage grass

and natural pasture) and different landforms ( slope aspect

slope position

and slope grade) in the whole watershed.Results show that infiltration rate presents the dis- tinct vertical variation along slope.With slope degree increasing

steady-state infiltrating rate increases.Steady-state infiltration rate on shady slope is higher than that on sunny slope

but its initial rate is smaller than that on sunny slope.The influence of slope position on steady-state infiltration rate is that steady-state infiltration rate is gradually increased from the upper slope down to the bottom slope.For different landuse manners

infiltration rates also have significant differences.