How does rain affect erosion?
Rain may move soil directly: this is known as ‘rainsplash erosion’ (or just ‘splash erosion’). Spash is only effective if the rain falls with sufficient intensity. If it does, then as the raindrops hit bare soil, their kinetic energy is able to detach and move soil particles a short distance.
Does rain prevent erosion?
By absorbing water through the roots, it increases the stability of the soil by removing the water from it. The roots of plants physically reinforce soils, resist erosion and increase the infiltration of water into the soil by forming physical pathways.
Does rain affect soil?
After a heavy rainfall, soil starts to spread out; soil structure is lost. Erosion depletes nutrient supplies or macronutrients like nitrogen, potassium, calcium, magnesium, and sulfur. This changes the soil content, soil texture at the surface, water-holding capacity, and pH levels.
What is rainfall erosion?
Rainfall erosion is a serious problem of farmland over a large part of the world. It is, particularly, acute on gently to steeply sloping land of both humid and semiarid areas. … The effectiveness of contour planting and tillage in erosion control varies with slope, crop, and soil.
How does the rain affect the stability of land formation?
The rainfalls have a double effect: reduce the soil cohesion and increase the pore pressure. This influence of the rainfall on slope stability depends of the duration and intensity of the rainfall.
How can rain prevent soil erosion?
Avoid Soil Erosion Caused by Heavy Rains
- Retaining Walls. Constructing a retaining wall made of brick or stones will minimize water runoff. …
- Apply Mulch. Another way to help prevent topsoil from being washed or blown away is to apply mulch. …
- Create Windbreaks. …
- Use Geotextiles. …
- Add Plantings.