In terms of erosion control, what does “ground cover” refer to?

Ground cover refers specifically to the use of plant material covering the soil surface. This plant material serves several critical functions in erosion control. Primarily, it helps to protect the soil by reducing the impact of raindrops on the soil surface, which can otherwise dislodge soil particles. By maintaining a vegetative layer, ground cover enhances soil stability and integrity, preventing erosion by wind and water. Additionally, it promotes water infiltration into the soil and aids in moisture retention, further preventing the soil from becoming loose and erodable.

In this context, soil composition, while important for overall soil health, does not represent ground cover. Water retention systems are mechanisms that help manage water flow but are not the same as ground cover plants. Natural rock formations, while they can provide some erosion control on their own, do not constitute ground cover in the sense typically used in erosion control practices. Ground cover specifically emphasizes the benefits derived from a cover of plants that protect the soil.