The Effect of Slope, Rainfall Characteristics on Splash Detachment and Transport: A Case study in Southeast Selangor, MalaysiaThe Effect of Slope, Rainfall Characteristics on Splash Detachment and Transport: A Case study in Southeast Selangor, Malaysia

Abstract

Seven modified Morgan’s Cups were fixed on seven slope degrees (2.5o to 17.5o). To study the rate of soil splash detachment and transport under natural conditions on tropical areas on the ground of the National University of Malaysia (UKM). There is a positive (0.95) and significant relation (0.001) between soil detachment and transport. It rated between linear (Y=a+bX) and power equations (Y=aXb). Both splash parameters correlated significantly (0.94) with slope steepness. The best rainfall erosivity index with respective mean of coefficient of determination (r2) is rainfall intensity for the maximum 60 min (I60) 0.82, and 0.76 with soil splash detachment and transport respectively. The second and third erosivity indexes are rainfall amount (AM) and AI60 with small differences in r2 about the first index. There are high, positive and significant relationships between most rainfall erosivity indexes with both soil detachment and transport, and the relation between them was linear (Y=a+bX) and power equations (Y=aXb).