1 / 22

Lesson 1

Lesson 1. Identifying Environmental and Economic Impacts from Soil Erosion. Next Generation Science/Common Core Standards Addressed!.

winslowm
Download Presentation

Lesson 1

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lesson 1 Identifying Environmental and Economic Impacts from Soil Erosion

  2. Next Generation Science/Common Core Standards Addressed! • HS-ESS2-2 Analyze geoscience data to make the claim that one change to Earth’s surface can create feedbacks that cause changes to other Earth systems. [Clarification Statement: Examples should include climate feedbacks, such as how an increase in greenhouse gases causes a rise in global temperatures that melts glacial ice, which reduces the amount of sunlight reflected from Earth’s surface, increasing surface temperatures and further reducing the amount of ice. Examples could also be taken from other system interactions, such as how the loss of ground vegetation causes an increase in water runoff and soil erosion; how dammed rivers increase groundwater recharge, decrease sediment transport, and increase coastal erosion; or how the loss of wetlands causes a decrease in local humidity that further reduces the wetland extent.]

  3. Agriculture, Food and Natural Resource Standards Addressed! • PS.01.02. Prepare and manage growing media for use in plant systems. • PS.01.02.02.b. Discuss how soil drainage and water-holding capacity can be improved.

  4. Work! • 1. Identify the environmental impacts of soil erosion. • 2. Identify the economic impacts of soil erosion.

  5. Terms • Erosion • Eutrophication • Sediment • Siltation

  6. What are the environmental impacts of soil erosion? • The loss of soil from both agricultural and nonagricultural lands is a serious problem throughout the world. • The removal of soil by wind or water moving over the land is called erosion.

  7. Wind erosion is a severe problem in NM. • Eastern NM was a part of the region severely impacted by drought that contributed to the dust bowl era.

  8. In the United States about 5 billion metric tons of soil are moved annually by soil erosion, some two thirds being moved by water and one third by wind.

  9. More than half of the water erosion and about 60 percent of the wind erosion is on cropland that produce most of the country’s food.

  10. The load of the sediment that is carried by some of the world’s major rivers to the ocean is enormous. Sediment is soil that is in suspension and is being transported or has been moved from its original location by wind or water.

  11. While soil erosion has serious implications for agriculture, its total environmental cost to society may be even higher in nonagricultural areas. Siltation is the deposition of soil particles in a body of water. This can cause the lifetime of water storage reservoirs to be shortened dramatically.

  12. River channels can be filled in and treatment plants for domestic water supplies can be damaged by silt intake.

  13. A major environmental concern with soil erosion is eutrophication, which is a condition that develops in water supplies when the water is changed by the increase of nutrients. This increase of nutrients can be created by the addition of commercial fertilizers brought in with soil sediment.

  14. Eutrophication

  15. If this occurs, the water no longer provides a good environment for the fish and other organisms in the area. Signs of eutrophication are dense growth of aquatic plants, algae, and other organisms. These types of problems pose dramatic environmental and economic impacts.

  16. What are the economic impacts of soil erosion? • The average soil loss to water erosion on cropland is thought to be 3.5 tons per acre. • Wind erosion is estimated to account of another 2.9 tons per acre of erosion. • Unfortunately the topsoil lost is the most valuable, productive for plant growth.

  17. One reason that producers are so concerned with soil erosion is the economic effect it has on their business through loss of production on their land.

  18. The total economic loss from lost production is about $40 million per year.

  19. In the long term, losses will become very significant. In addition to loss in production, a producer must calculate the costs of lost fertilizer, lime, and pesticides, deposition in field drainage systems and irrigation structures as well as many other factors.

  20. Far greater than production losses due to erosion is the cost of off-site effects such as sedimentation or pollution. This accounts for $3.1 billion a year in losses. Damage in this area affects everyone in society.

  21. Review/Summary • What are the environmental impacts of soil erosion? • What are the economic impacts of soil erosion?

  22. The End!

More Related