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Selected Soil SCIENCE principles for soil survey

Selected Soil SCIENCE principles for soil survey. Soil Genesis and Morphology. Hone your skills and study . Know your parent materials. Soil Forming Factors. Parent Material Topography Climate Biota Time. Topography: dictates accumulation vs. erosion, drainage, aspect, etc.

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Selected Soil SCIENCE principles for soil survey

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  1. Selected Soil SCIENCE principles for soil survey

  2. Soil Genesis and Morphology

  3. Hone your skills and study

  4. Know your parent materials

  5. Soil Forming Factors Parent Material Topography Climate Biota Time

  6. Topography: dictates accumulation vs. erosion, drainage, aspect, etc

  7. Biota: in Maine this means (mostly) spruce-fir and N. hardwoods influence.

  8. Landform = Hill shoulder slope Spruce - N. hardwood forest Parent Material = Dense Basal Till ~ (14,000 Yrs old in mostly humid, frigid climate) Slate bedrock

  9. Catena Concept for Soils-within a parent material:drainagesequence of soils by landform (along a slope)- INCREASING WETNESS Soil Bedrock

  10. Catena Concept for Soils-sequence of soils along a slope- INCREASING WETNESS Rawsonville Marlow Dixfield Colonel Brayton Bucksport Dense Till Soil Bedrock

  11. Rawsonville

  12. Marlow

  13. Dixfield

  14. Colonel

  15. Hydric Soils: Brayton Series

  16. Bucksport: Saprist

  17. Pre-mapping Preview: Delineate Soil Forming Factors and use Catenas • Permutations drive map unit development. • Parent material • Topography • Landform • Slope, position on slope • Morphometry • Vegetation • Climate • Time

  18. Pedantry and mastery are opposite attitudes toward rules. To apply a rule to the letter, rigidly, unquestioningly, in cases where it fits and in cases where it does not fit, is pedantry... To apply a rule with natural ease, with judgment, noticing the cases where it fits, and without ever letting the words of the rule obscure the purpose of the action or the opportunities of the situation, is mastery. -George Polya, professor of mathematics (1887-1985)

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