Which strategy is often used to prevent soil erosion?

Contour farming is a farming practice that involves plowing and planting across the slope of the land, following its natural contours. This method is effective in reducing soil erosion because it helps to slow down water runoff during rainfall, allowing more water to infiltrate the soil. By creating natural barriers along the curves of the contours, this practice minimizes the speed at which water flows across the surface, thereby reducing the potential for erosion.

In contrast, practices such as surface mining and monoculture planting often contribute to soil degradation. Surface mining removes the protective layer of soil and vegetation, leading to increased erosion risk. Monoculture planting can deplete certain nutrients in the soil and leave it vulnerable to erosion, especially if crop rotation practices are not employed. Overgrazing similarly leaves soil exposed and can lead to significant soil erosion as vegetation is removed and the ground is compacted, making it more difficult for soil to retain moisture and nutrients.

Therefore, the use of contour farming stands out as a proactive strategy to enhance soil conservation and prevent erosion.