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Soil Conservation to save soil.
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How do we use the land to change the land?
Mining Agriculture – crops, pastures for animals Development – the construction of homes, offices, stores, roads etc.
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How can soil be lost or damaged?
Exhausted – soil loses fertility because crops are planted year after year. Polluted – mining, chemical spills, HUMANS Erosion – wind, water Land Degradation (aka desertification) – a once wet area, undergoes drought conditions OR grazing animals OR cutting trees
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Soil Damage water Rills
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Soil Damage water Rills
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Soil Damage water Gully
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Soil Damage – Wind Erosion Dust Bowl
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What is soil conservation?
Soil conservation is a method to maintain the fertility of the soil by protecting the soil from erosion and nutrient loss Windbreaks Retaining Walls Ground cover (vegetation) Terracing
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Changes one steep slope into a series of smaller, flatter fields
TERRACING Changes one steep slope into a series of smaller, flatter fields
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Changes one STEEP slope into a series of smaller, flatter fields
TERRACING Changes one STEEP slope into a series of smaller, flatter fields
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Changes one STEEP slope into a series of smaller, flatter fields
TERRACING Changes one STEEP slope into a series of smaller, flatter fields
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Trees planted along the edge of a field to prevent wind erosion
WINDBREAK Trees planted along the edge of a field to prevent wind erosion
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Trees planted along the edge of a field to prevent wind erosion
WINDBREAK Trees planted along the edge of a field to prevent wind erosion
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Retaining walls keep soil from washing down a slope
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Retaining walls keep soil from washing down a slope
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GROUND COVER (mulch, pine straw, rocks)
Mulch or pine straw keeps the soil covered to prevent erosion AND it keeps soil wet
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GROUND COVER (vegetation)
Covering the ground with plants, grass, or rocks prevents erosion
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GROUND COVER
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SILT FENCES Construction sites
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WATER
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WATER
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BOGGLE REVIEW GAME 2 minutes Study your notes
2 minutes Record ANYTHING you remember about soil 2 minutes Share with your partner. Add new information to your list. 2 minutes Leave your partner. Compare with another student. Receive a point for each fact you have that the other student does not have. 2 minutes Add up your score. Share in a large group facts for which you got points.
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