A hazard traditionally associated with agriculture in tropical and semi-arid areas and is important for its long-term effects on soil productivity and sustainable agriculture

The detachment and subsequent transport of soil materials (including rock fragments) by an agent (water, wind, or gravity) to an area of deposition.

2 General types of erosion

this represents the erosion characteristics of the land in its natural environment. undisturbed by human activity.

this is erosion induced by human activities that have brought about changes in natural cover and soil conditions.

3 Processes involved during soil erosion by water

This is a process by which raindrops splash soil sediments from the soil surface into the runoff

transportation of sediments from upslope to downhill direction, whether in rills, between rills, and sheet flow.

This refers to the process of sediment settling out under the action of gravity.

Types of erosion

this is also known as so blowing This may range from a slight disturbance of the soil surface over a small area to the ruge dust storms that sweep across large areas removes countless tons of soil and constitutes a major catastrophe

a type of erosion caused by rainwater including melted snow running over exposed and surfaces

Types of water erosion

this is a type of erosion where runoff from a slope increases cumcently in volume or velocity to cut deep incisions

this is more or less the removal of a thin layer of soil over an entire sloping and segment.

this is an erosion occurring along the sides of river banks.

this is a type of erosion when runoff water generally concentrates on small channels of sufficient velocity and volume to generate increased cutting power

Types of Wind erosion

is the wearing a way of rocks and toll projections by fine particles camed in suspension

a similar action takes place close to the ground where the moving particles are larger and bouncing along over the surface

Forms by Which Materials are Carried Away

Types of Particle Movement by Wind Action

particles of intermediate size move off downwind into the bouncing action called?

the removal of very fine particles.

the rolling away by large particles.

bouncing movement of particles

is the movement by very fine particles, mainly less than 0.1 mm diameter. Stoke's Law relates the speed of a body falling through a fluid to the square of the particle diameter, and the falling speed of such small particles is so low that once lifted,

rolling movement of particles

Factors influencing the rate of erosion

The potential capacity of the rain to cause erosion is called

this is the climatic element that mainly affects erosion in the humid tropics

is defined as the fineness or coarseness of soil particles.

this refers to the vulnerability or proneness of the soil to erosion.

which is the arrangement of primary particles into aggregates

Both the slope steepness and slope length affect erosion and runoff behavior.

particularly the removal of vegetative cover thru shifting cultivation and deforestation results in accelerating soil erosion

Human activities that affect soil erosion

this occurs when animals eat top leaves

effects outside agriculture

effects of soil erosion of farmer's fields

soil structure