The K factor represents in RUSLE

The K factor represents in RUSLE

• A. Soil moisture content
• B. Soil color
• C. Slope angle only
• D. Soil erodibility factor representing the combination of detachability of the soil, runoff potential, and the transportability of the sediment eroded from the soil.

Answer: (D)

The K factor in RUSLE is the soil erodibility factor, which measures how susceptible a soil is to erosion under rainfall and runoff. It captures the soil’s tendency for particles to detach when hit by raindrops and carried away by flowing water, reflecting the combined effects of detachability, runoff potential, and transportability of the eroded sediment. This intrinsic erodibility comes from soil properties like texture, structure, organic matter, and permeability. It isn’t about soil moisture content, color, or slope by itself—slope effects are handled by the LS factor, while moisture or color don’t determine erodibility. In the RUSLE equation, soil loss is proportional to R × K × LS × C × P, so the K factor specifically scales erosion potential to the soil’s inherent susceptibility.

The K factor in RUSLE is the soil erodibility factor, which measures how susceptible a soil is to erosion under rainfall and runoff. It captures the soil’s tendency for particles to detach when hit by raindrops and carried away by flowing water, reflecting the combined effects of detachability, runoff potential, and transportability of the eroded sediment. This intrinsic erodibility comes from soil properties like texture, structure, organic matter, and permeability. It isn’t about soil moisture content, color, or slope by itself—slope effects are handled by the LS factor, while moisture or color don’t determine erodibility. In the RUSLE equation, soil loss is proportional to R × K × LS × C × P, so the K factor specifically scales erosion potential to the soil’s inherent susceptibility.