1. Causes of soil erosion
Table sort task

2. Causes of degredation
Overgrazing and agricultural mis- management affect more than 12 million km2 world wide Worse in Africa and Asia where 20% of worlds pasture has been damaged.

3. Effects of loss of soil Increased surface runoff and flooding
Reduced infiltration so groundwater is not replenished - Springs and wells dry up
Desertification: ‘becoming desert’ - dry land becomes increasingly arid, losing water/vegetation/wildlife
Development of erosion gullies
Change in surface microclimate – alters albedo and increased dryness
Reduced germination of plants
in most vulnerable areas - FAMINE

4. Effects of soil erosion……
Overcultivation, overgrazing and deforestation
Desertification: Dust Storms: Topsoil Erosion: Reduced Crop Yields: Conflict: Famine: Increased Use of Chemicals:
refugees – people move to new areas
Reduced agricultural output – fewer crops can be grown
Famine – people starve
Malnutrition – people don’t have enough to eat

5. Research & Present Soil Degradation Management (Choose Below)
Research & Present Soil Degradation Management (Choose Below). Egypt, Turkey, Ethiopia, Chile, China, Nicaragua
Using research, the textbook and your partner, plan a 5 minute presentation on soil degradation to be presented Wed (2nd half class).
You will choose one country and illustrate the model:
TYPES-CAUSES-EFFECTS-MANAGEMENT STRATEGIES
You can use only a Powerpoint to explain yourself. You will work in class.
Same rubric as last time; this time – think about flow, timing and how to speak well using your body, eye contact, gestures and enthusiasm.