2004 soil structure and classicaon processes of

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Unformatted text preview: classifica*on of soil types •  Generally classifica*on schemes relate to climate/vegeta*on characteris*cs and degree of weathering 1. classifica*on of dis*nct soil horizons Andrews et al., 2004 Classifica*on of soil types (USDA system shown here) Andrews et al., 2004 Soil Structure and Classifica*on •  Processes of weathering, transport, exchange, decomposi3on etc. generate iden*fiable characteris*cs in soils that allow general classifica*ons to be developed –  1. classifica*on of dis*nct soil horizons –  2. classifica*on of soil types •  Generally classifica*on schemes relate to climate/vegeta*on characteris*cs and degree of weathering 1. classifica*on of dis*nct soil horizons Andrews et al., 2004 2. classifica*on of soil types (USDA system shown here) Andrews et al., 2004 Andrews et al., 2004 We will examine 3: •  1. soils with clay rich (argillic) horizons •  2. podzols (spodosols) •  3. Soils with gley horizons (high water table) Soils with argillic horizons •  Clay rich horizon –  linked to transport of divalent ca*ons from upper profile –  destabilize bound clays –  clays transported to deeper soil layers...
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