Slope borders reduce erosion, altering sediment transport and runoff dynamics.
Splash erosion on slopes can lead to material loss, but the edges of slopes can reduce this erosion by preventing splashed materials from re-entering the slope. This "slope border effect" has been understudied. Researchers used a modified soil pan to simulate rainfall-induced erosion and found that the rate of splash erosion increased with slope steepness and rainfall intensity. Complete splash erosion led to higher runoff and sediment transport compared to partial splash erosion. The type of sediment particles transported varied depending on the erosive power of rainfall and runoff. Partial splash erosion can weaken the ability of runoff to selectively transport sediments, especially under high erosive power conditions.