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Soil Resources

Chapter 6.2. Soil Resources. Do you think soil is a resource?. SOIL RESOURCE. Frodo. Soil resources. Soil is a resource Many things you need depend on healthy soil Food, Paper, Plants, etc . TopSOIL. Topsoil. The mineral - and nutrient -rich portion of the soil is called topsoil

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Soil Resources

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  1. Chapter 6.2 Soil Resources

  2. Do you think soil is a resource? SOIL RESOURCE Frodo

  3. Soil resources • Soil is a resource • Many things you need depend on healthy soil • Food, Paper, Plants, etc

  4. TopSOIL

  5. Topsoil • The mineral- and nutrient-rich portion of the soil is called topsoil • Topsoil is the upper, outermost layer of soil, usually the top 2 inches (5.1 cm) to 8 inches (20 cm). 

  6. PROTECT TOPSOIL Topsoil • Topsoil is very important! • Good topsoil absorbs and holds the water that plants need. • Good topsoil is produced by many years of interactions between soil and plants • But topsoil can be damaged or lost quickly!

  7. Deforestation serena

  8. Deforestation

  9. The loss of forest,called deforestation ,can also harm soils. • Deforestation can lead to severe soil erosion. Soils and microclimates can change so much that trees cannot grow there again.

  10. Deforestation There are about 2 million trees chopped down everyday. A lot oftrees were used for papermaking,throwawaychopsticks……People infinitum to cut. Unfortunately,more than half of the world’s old-growth forests have already been lost.

  11. Example Shangrila Loess Highlands

  12. DeforestationAffect

  13. People want to make more economic efficiency. They think nature’s resourse is inexhaustible ,and thy think they the ruler of the world. They are not aware of that doferestation will lead to many seriouse Consequence. The law system is imperfect. People have the wrong values and ethics.

  14. soil be blown away trees be cut down soil be washed into… nothing to hold…

  15. desertification The area of desert is growing.

  16. -Soil Erosion- Desertification By Ellen

  17. What is desertification? Lower land productivity caused by overfarming , overgrazing, seasonal drought, and climate change.

  18. Why it happens? The most common cause of desertification is the over cultivation of desert lands. Over-cultivation causes the nutrients in the soil to be depleted faster than they are restored. Improper irrigation practices result in salinated soils, and depletion of aquifers.

  19. Areas affected Drylands occupy approximately 40–41% of Earth’s land areaand are home to more than 2 billion people.

  20. The Dust Bowl A ranch in Boise City, Idaho, is about to be hit by a cloud of dry soil on April 15, 1935.

  21. The Great Plains Today

  22. SOIL USE AND SUSTAINABILITY Giovannate & Neo

  23. statistics The desert coverage of the world is also around 30% The forest coverage of the world is around 30%

  24. Problem solving Diffierent time To stop erosion and the loss of nutrient II. Contour Plowing To reduce wateroff and erosion I .Crop Rotation

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