Soils Support World Food Supply. Where Does Your Food Come From? Plants Animals Energy obtained from plants Animal Products (Milk)

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Presentation transcript:

Soils Support World Food Supply

Where Does Your Food Come From? Plants Animals Energy obtained from plants Animal Products (Milk)

Soils are an Integral Part of any Food Web Source:

Soil Supports Plants Water Nutrients Biology Symbiotic Relationships Bacteria Fungus

Soil Supports Animals Grass Cattle Sheep Bison Wildlife Row Crops Pigs Chickens Vegetables Humans

Farmers Support Soils One US Farmer Feeds About 155 People Average Farm in US is 455 acres (NASS, 2006)

Available Soil The total land area of the world exceeds 13 billion hectares Less than half can be used for agriculture, including grazing. 1.4 billion hectares - is presently suitable for growing crops.

Arable Land Arable Land is land under temporary, temporary meadows for mowing or for pasture, land under market or kitchen gardens, and land temporarily fallow. Source: hMaps.html

Arable Land Increase in World Population Increase in Urban Areas Land degradation Soil is a slowly renewable resource

Arable Land Only 10% of the World Soils can be used for Food Production 1/3 of arable land has been lost to erosion since % of US agricultural land been lost due to degradation Erosion Salinization Waterlogging

Protecting our Soil 25% of world agricultural soils being impacted by water erosion 40% of arable soils in arid regions impacted by wind erosion Sources: caused-by-wind

“There are two spiritual dangers in not owning a farm. One is the danger of supposing that breakfast comes from the grocery and the other that heat comes from the furnace.” Aldo Leopold

Sources issues.html#lesson – Green Revolution issues.html#lesson – Soil Salinity References

The UN Declared 2015 as the International Year of Soils (IYS) to bring more attention to this important natural resource. The Soil Science Society of America celebrates IYS and is happy to bring you this presentation. We hope you take the time to learn more about soils at the many resources listed at the end of this presentation, as you learn more about how… Soils Sustain Life

Thank you for listening! For further information, visit: Soils.org/discover-soils – information about all things soil! Soils4teachers.org – Lesson plans, activities, etc. for teachers Soils4kids.org – activities for the K-12 audience Follow us on facebook.com/iheartsoil Soils sustain life!