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Transcript
Soil Erosion © The GlobalEd 2 Project Photo credit: Norbert Rosing, National Geographic Essential Questions • What is soil erosion? • What causes soil erosion? © The GlobalEd 2 Project Enduring Understanding 1. Soil erosion is the process of weathering and transport of solids (sediment, soil, rock and other particles) in the natural environment or their source and deposits them elsewhere. 2. Soil erosion usually occurs due to transport by wind, water, or ice; by down-slope creeping of soil and other material under the force of gravity; or by living organisms, such as burrowing animals. © The GlobalEd 2 Project How Does Climate Change Impact Erosion? • One of the most widespread threats to soil quality is high winds and water erosion, an everoccurring process that impacts our lives in numerous ways, the direst of which is lost food production. It is estimated that soil erosion is damaging the productivity of 29% (112 million acres) of U.S. cropland and is adversely affecting the ecological health of 39% (145 million acres) of rangeland. Source: http://soils.usda.gov/survey/global_climate_change.html © The GlobalEd 2 Project
