1 / 19

Soils and Regolith

Soils and Regolith. Pedology- The study of soils. Pedogenic processes depend on: ClORPTH Climate - Temperature, H 2 O, freezing Organisms - Addition and digestion of Org. Material Relief - Slope Steepness - Balance with erosion Parent Material - what do you start with?

lgreathouse
Télécharger la présentation

Soils and Regolith

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. Soils and Regolith

  2. Pedology- The study of soils • Pedogenic processes depend on: ClORPTH • Climate - Temperature, H2O, freezing • Organisms - Addition and digestion of Org. Material • Relief - Slope Steepness - Balance with erosion • Parent Material - what do you start with? • Time - How long has it been sitting there? • Humans - Addition of fertilizer, tillage, salinization, etc… FLUX SITE

  3. The importance of soils • Life on Earth depends on soil • Soil is a vital non-renewable resource • It takes > 1000’s of years to form a soil • Chemical weathering happens in soils

  4. Soil Degradation (erosion)

  5. The Dust Bowl

  6. Soil Horizons E/A2

  7. Soil Formation

  8. Clay Formation in Soils Primary 2:1 1:1 0:1

  9. Some Soil Profiles Oxisol Alfisol Aridisol

  10. Soil Water

  11. Climate and Organisms

  12. Relief

  13. Parent Material

  14. Time

  15. Naming Soils • Soils are named on the basis of Subsurface horizons • Layers in the soil that reflect soil forming processes

  16. Soil Orders • Alfisols - Moderate temperature forests • Andisols - Soils on volcanic material • Aridisols - Soils from deserts • Entisols - Little soil formation • Gelisols - Soils in cold regions w/ permafrost • Histisols - Soils on peat • Inceptisols - Young soils • Mollisols - Grassland soils • Oxisols - Tropical forests • Spodosols - Cool, wet coniferous forests • Ultisols - Tropical and subtropical forests • Vertisols - Soils with cracks

  17. Global Soil Distribution

  18. Major Terrestrial Biomes

More Related