The effect of land slope upon the amount of the upslope

sideslope and downslope splash erosion was studied by using the simulated rainfall tests individually. The results indicated that the relation between the amount of the upslope and downslope splash erosion and land slope was roughly parabolic

and that when the critical slope was between 10°—15° and 20°—25°

but when i=2.037mm/min.

the relation between the amount of sideslope splash erosion and land slope was a power function

and the critical slope disappeared

and that the relation detween the amount of downslope splash erosion and land slope was on the leaner increase

whose ascending rate increased with an increase in rainfall intensity. Finally

the multiple-factor equation of total amount of raindrop splash erosion

EI and land slope (S) was given in this paper

i. e. ST=5.985 (EI)0.544S0.471 where

ST——the total amount of solash erosion (g) per unit area E——raindrop kinetic energy (J/m2) I——rainfall intensity (mm/min.)