Soil Erosion.

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Presentation transcript:

Soil Erosion

Sticky note time What do you know about soil erosion? -How has erosion impacted agriculture or yourself? -What are some examples of soil erosion?

Effects of soil erosion

Weathering and erosion http://www.youtube.com/watch?v=GT2-opPHKpw Weathering Erosion breaking Take away

Types of soil erosion Wind erosion Frozen melt erosion Water erosion Splash erosion Sheet erosion Rill erosion Gully erosion

Wind erosion Dust Bowl of 1930s “Dirty thirties”

Frozen melt erosion

Splash erosion

Sheet erosion Typically seen when water washes off soil on hills

Rill Erosion Most common kind of erosion “crop rows”

Gully erosion Once rills are large enough to restrict vehicular access they are referred to as gullies

Prevention is key Plant vegetation especially on hills (native is best) Prevent/ control runoff water Create windbreaks Avoid compacting soils Stick to trails Avoid using heavy machinery Avoid overgrazing

Resources http://159.226.205.16/curriculum/3w/01/type/index.html http://www.crd.bc.ca/watersheds/protection/howtohelp/agriculture.htm