Environmental Science 102
Mechanical and chemical destruction of the land and the removal of material by moving water, wind or ice.
Sediment and organic material is removed from one location, then transported to another location where it is deposited
Impact and Abrasion:
Salt Crystal Growth:
Chemical alteration of rocks and minerals, causing a weakening of the structure.
Precipitation impacts on the surface - dislodges soil and sediment
New material is created by chemical, mechanical and biologic processes
Amount of loss on average equals the amount of replacement - therefore the soil tends to maintain itself
Reduction of vegetation can lead to accelerated erosion - rapid removal
Occurs naturally and through human influences
Causes of Vegetation Loss:
In areas cleared of vegetation, water flowing downhill quickly cuts small channels or rills into the slope
Widening and deepening of these rills results in gullies
Gullies will keep the water flow concentrated, further increasing the rate of erosion
Major force of erosion