1 / 9

Soil

Soil. Soil quality - based on properties Observed: soil profile, composition, texture, or particle size Measured: pH and permeability. Soil Profile. Soil forms in layers - soil profile Litter – organic matter on top Topsoil- nutrient rich top layer, for plant growth

bella
Download Presentation

Soil

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. Soil Soil quality - based on properties • Observed: soil profile, composition, texture, or particle size • Measured: pH and permeability

  2. Soil Profile • Soil forms in layers - soil profile • Litter – organic matter on top • Topsoil- nutrient rich top layer, for plant growth • Subsoil- under topsoil, small rocks • Bedrock- semi solid rock

  3. Soil

  4. Soil

  5. Composition rock particles, minerals, decayed material, air & water • combination of these affects • type of plants • type of animals

  6. Texture & particle size • Texture - size of individual soil particles. • Determined by: proportions of sizes that make up soil • Particle size range – tiny (clay) to > 2 mm (gravel)

  7. Permeability • open spaces allowing water to flow through it. • How freely water flows is called permeability. • Used to understand drainage • Percolation: amt of seepage

  8. pH • Soil can be acid-like or base-like depending on measure of pH • Soil pH range is 4-10 with lower numbers being acidic • Healthy soil is between 5-7

  9. Soil • MVP = most important abiotic factor in an ecosystem because everything that lives on land depends directly or indirectly • We lose 7% of topsoil / decade, = more desert-like conditions. • As a result of this, Ecosystems are changing.

More Related