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Soil erosion in the Us and the World
Soil Erosion
Qoutes from the Pros
"This situation is particularly critical," Wilkinson said
Plants that prevent Soil erosion
Did you know!!
Annual soil loss in South Africa is estimated at 300 - 400 million tonnes, nearly three tonnes for each hectare of land.
Thank you for your attention!
The Definition of Soil erosion
Soil erosion is when the soil is blown away by the wind or washed away by the rain
•One of the most effective techniques to prevent soil erosion is controlling the rate of grazing of the land that is vulnerable to erosion. Separate land is allocated for grazing animals
Conclusion
Soil Erosion in the U.S
Around the world, soil is being swept and washed away 10 to 40 times faster than it is being replenished, destroying cropland the size of Indiana every year, reports a new Cornell University study.
"Erosion is a slow and insidious process,"
How Soil Erosion is affecting us
Because soil formation proceeds at about the same rate as natural erosion, Wilkinson's results mean that humans are stripping soil from the surface of the Earth far faster than nature can replace it.
Earth's human population is growing rapidly and because almost all potentially arable land is now under the plow
Soil erosion in the world
Different
perspectives
The vast majority -- 99.7 percent -- of human food comes from cropland, which is shrinking by more than 10 million hectares (almost 37,000 square miles) a year due to soil erosion
Where soil erosion occurs
■Europe
■North America
■South America
■Africa
■Asia
■Australia/New Zealand
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