What does the combined LS factor in the RUSLE represent?

The combined LS factor in the Revised Universal Soil Loss Equation (RUSLE) specifically represents the length and steepness of a slope. This factor reflects how the angle and length of a slope contribute significantly to soil erosion processes. In particular, the LS factor quantifies the potential for soil erosion based on the terrain; steeper and longer slopes generally result in higher rates of erosion due to increased runoff velocity and greater soil displacement.

This emphasis on terrain characteristics allows for more accurate predictions of soil loss in different landscape scenarios. While the chosen answer mentions a ratio related to a standard slope length, it is crucial to recognize that this aspect is part of a broader understanding of how slope characteristics influence erosion. Therefore, understanding the LS factor enables practitioners to better assess and manage erosion risks on varying topographies.