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Documentation in Soil Survey

Documentation in Soil Survey. Definition National Soil Survey Handbook(NSSH) 627.00. Those activities conducted in the field that organize, gather, describe, and delineate data needed to provide current and accurate soil maps and interpretations. What Does Documentation Provide You?.

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Documentation in Soil Survey

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  1. Documentation in Soil Survey

  2. Definition National Soil Survey Handbook(NSSH) 627.00 Those activities conducted in the field that organize, gather, describe, and delineate data needed to provide current and accurate soil maps and interpretations

  3. What Does Documentation Provide You? • Develop and modify soil landscape models • Quantify soil variability • Verify MU concepts • Develop and test interpretations • Provide consistency in mapping • Communication

  4. What Kinds of Documentation Do We Collect? In the Field We Gather Site Specific Quantitative Information Through Standardized Procedures • Pedon Descriptions • Traverse • Transects • Site Observations • Field notes • Vegetation notes/site index • Quantify Soil Properties • Verify Soils/MU • Determine Composition • Verify Soils • Verify Soils(What’s Normal) • Verify Soils

  5. Traversing

  6. Transecting Systematic Variation

  7. 10 9 8 7 6 5 4 3 2 1 Transecting Selecting Delineations for Transecting eliminate bias consider stratification • position the transect line to encounter the maximum variation in each delineation • transect line should go from the highest part of the landscape to the lowest Orienting Transects Measured Line Segments Fixed Length Intervals

  8. Transecting Random Variation -grid -stratified random

  9. Matrix of Soil Orders and Documentation (Exhibit 627-8)

  10. Other Documentation • Pictures and other audio/visual information • Special investigations and studies (GPR, EM meter, stoniness, watertable, others) • Others?

  11. What to do With this Documentation? • All documentation needs to be entered into NASIS(National Soils Information System) – Why? • Two types: • Point data • Site, Pedon, Transect Objects • Aggregated data • Data Mapunit Object

  12. How much Documentation is enough? • What factors will influence amount? • scale(order), access, past documentation, parent material, landscape patterns, uniformity, user needs, land use • Guidance • MOU-Memorandum of Understanding • NSSH • More documentation shouldn’t change the results

  13. Parent Material

  14. Landscape Patterns

  15. Uniformity

  16. Land Use and User Needs

  17. Quiz Time

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