Juma, N. 1999. The pedosphere and its dynamics. Salmon Productions, - PowerPoint PPT Presentation

Nov 19, 2023 •292 likes •468 views

Juma, N. 1999. The pedosphere and its dynamics. Salmon Productions, Edmonton, Alberta, Canada Soil Pore Solids Space Air 20 30% Mineral 45% Water 20 30% Organic 5% Capillary Fringe (est. thickness) Soil Range in Depth Avg.

Juma, N. 1999. The pedosphere and its dynamics. Salmon Productions, Edmonton, Alberta, Canada
Soil Pore Solids Space Air 20 – 30% Mineral 45% Water 20 – 30% Organic 5%
Capillary Fringe (est. thickness) Soil Range in Depth Avg. Sands 0-3 in. 2 in. Silts 0.5 – 5 ft. <12 in. Clays 5-10 ft. <60 in.
O - Organic A – Mineral Mixed with humus, dark colored E - Horizon of maximum eluviation of silicate clays, Fe, Al oxides Solum B - Horizon of maximum illuviation of material C - Zone of least weathering, accumulation of Ca & Mg carbonates, cementation, etc. Bedrock R
Water Water Infiltration Infiltration Coarse Moderate Sand Silt 8” Rapid Coarse Sand 18” Slow Silt Clay Fine Sand Moderate/ Silt slow Silt Clay
Juma, N. 1999. The pedosphere and its dynamics. Salmon Productions, Edmonton, Alberta, Canada
Example of macropore formation due to soil shrinkage and cracking
Example of surface sealing due to soil swelling.
Jury, W.A., W.R. Gardner, and W.H. Gardner. 1991. Soil physics, 5 th ed. John Wiley & Sons, Inc. New York.

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