Lecture 24 Taxonomy continued

Lecture 24 Taxonomy continued - 1 Classification of Soils...

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Unformatted text preview: 1 Classification of Soils Order Suborder Great group Sub group Family Series 12 19,000 Soil Taxonomy Hierarchy Soil Taxonomy Hierarchy 63 250 1400 8000 Kingdom Phylum Class Order Family Genus Species 2 Diagnostic Horizons Diagnostic Horizons Surface Subsurface Diagnostic Surface Horizons Diagnostic Surface Horizons Epipedons Mollic Umbric Ochric Histic Melanic Plaggen Anthropic Mollic Histic Umbric Ochric Melanic Plaggen Anthropic X X X X X = Florida Diagnostic Surface Horizons Diagnostic Surface Horizons 3 Mollic Mollic Epipedon Epipedon Thickness > 18-25 cm Color value < 3.5 moist chroma < 3.5 moist Organic Carbon > 0.6 % Base Saturation > 50 % Structure strongly developed Organic carbon = organic matter x 0.58 Grassland Soils Umbric Umbric Epipedon Epipedon Meets all criteria of the Mollic epipedon, except base saturation < 50% Chemically different than Mollic 4 Ochric Ochric Epipedon Epipedon Too: thin light low in O.M Mollic Umbric Ochric = pale Extremely common Histic Histic Epipedon...
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Lecture 24 Taxonomy continued - 1 Classification of Soils...

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