Soil Conservation to save soil.
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.
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 http://www.gly.uga.edu/railsback/CTW/ChinaDesertification.jpeg
Soil Damage water Rills
Soil Damage water Rills
Soil Damage water Gully
Soil Damage – Wind Erosion Dust Bowl
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
Changes one steep slope into a series of smaller, flatter fields TERRACING Changes one steep slope into a series of smaller, flatter fields
Changes one STEEP slope into a series of smaller, flatter fields TERRACING Changes one STEEP slope into a series of smaller, flatter fields https://www.youtube.com/watch?v=Ckb3xSjEKqw
Changes one STEEP slope into a series of smaller, flatter fields TERRACING Changes one STEEP slope into a series of smaller, flatter fields
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
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
Retaining walls keep soil from washing down a slope
Retaining walls keep soil from washing down a slope
GROUND COVER (mulch, pine straw, rocks) Mulch or pine straw keeps the soil covered to prevent erosion AND it keeps soil wet
GROUND COVER (vegetation) Covering the ground with plants, grass, or rocks prevents erosion
GROUND COVER
SILT FENCES Construction sites
WATER
WATER
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.