The detachment and subsequent transport of soil materials

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

3 Processes involved during soil erosion by water

(detachment from the ground)

(via wind or water)

(sediemint setting)

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

from upslope to downhill direction,

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

Types of erosion

a type of erosion caused by rainwater, including melted snow running over exposed land surfaces.

types of water erosion

this is more or less less the removal of a thin layer of soil

This is a type of erosion when runat water generally concentrates on small channels

develop deep incisions

this is an erasion occurring along the sides of river banks

Forms by Which Materials are Carried away

the rolling away by large particles

the removal of very fine particles.

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

is the movement by very fine particles

rolling movement of particles

bouncing movement of particles

types of movement by wind action

Forms of Wind Erosion

soil projections by tine particles carned in suspension.

moving particles are larger and bouncing along over the surface

Factors influencing the rate of erosion

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

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

defined as the fineness or coarseness of soil particles.

arrangement of primary particles into aggregates

is defined as the lowering of the soil's capacity to support human life.

is the portion of rainfall that makes its way toward stream channels, lakes, or oceans as surface or subsurface Flow.

FACTORS AFFECTING RUN-OFF

was developed by the United States Natural Resources Conservation Service

a method of assessing the extent to which limitations such as erosion

Deep, productive soils easily worked

Productive soils on gentle slopes; moderate depth

Soils of moderate fertility on moderately steep slopes

Good soils on steep slopes, subject to severe erosion; very severe risk of damage but may be cultivated if handled with great care

Land is too wet or stony for cultivation

Shallow soils on steep slopes; use for grazing and forestry

Steep, rough, eroded land with shallow soils; also includes droughty or swampy land

Very rough land; not suitable even for woodland or grazing;

Classes I-IV

CLASS 5-8

This method of estimating soil loss

USLE FACTORS

is a mathematical model used to predict the long-term average annual rate of soil erosion.