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Soil Survey

Soil Survey. Helping People Understand Soils. NCSS Standards What are They? Why are They Important? David Hoover Acting National Leader, Soil Survey Standards. Why is this topic Important?. Soil Survey. Helping People Understand Soils.

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Soil Survey

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  1. Soil Survey Helping People Understand Soils NCSS Standards What are They? Why are They Important? David Hoover Acting National Leader, Soil Survey Standards

  2. Why is this topic Important? Soil Survey Helping People Understand Soils • The National Cooperative Soil Survey is built upon 100+ years of experience. • It is a respected, science-based inventory of the nation’s soils. • The scientific basis is embodied in our standards. • To be successful, you need to understand this. • Soil Survey Office Leader (your boss) is charged with certifying your work meets our standards.

  3. Quality Control / Quality Assurance Soil Survey Helping People Understand Soils • Discussed in NSSH Part 609 • QC – Takes place in the Soil Survey Office • Your work must meet NCSS standards. • QA – Takes place during periodic reviews by your assigned Data Quality Specialist. Must be certified by the MO Leader as meeting NCSS standards.

  4. Objectives Soil Survey Helping People Understand Soils • You will be able to: • Describe what is meant by “NCSS Standards”. • List at least 4 documents containing NCSS standards. • Explain why standards are critical to the NCSS.

  5. What is a Standard? Soil Survey Helping People Understand Soils “NCSS standards are common or shared procedures that enhance technology transfer, data sharing and communications among soil survey participants.” National Soil Survey Handbook, 600.02

  6. Examples From Soil Survey Soil Survey Helping People Understand Soils • A-Bt-BC-Cr-R • loamy, mixed, active, shallow, mesicTypicHapludalf • Site index of 110 feet for Yellow Poplar

  7. http://www.nrcs.usda.gov/wps/portal/nrcs/site/soils/home/ Technical References

  8. Soil Taxonomy Soil Survey Helping People Understand Soils • Common base to organize knowledge about soils. • Communication Tool among soil scientists. • Transfer technology.

  9. http://www.nrcs.usda.gov/wps/portal/nrcs/main/soils/survey/class/http://www.nrcs.usda.gov/wps/portal/nrcs/main/soils/survey/class/

  10. Soil Survey Manual Soil Survey Helping People Understand Soils • Basic principles for making and using soil surveys. • Conventions for Describing Soils. • For soil scientists who are making soil surveys. • For others wanting to know the scientific basis. • BUT! – published in 1993 and is increasingly outdated with respect to technology.

  11. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ref/?cid=nrcs142p2_054262http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ref/?cid=nrcs142p2_054262

  12. National Soil Survey Handbook Soil Survey Helping People Understand Soils • Current operational procedures in more detail than SSM. • Policies for planning and managing projects. • Policy/procedure for collecting & managing data. • Policy/procedure for disseminating information.

  13. http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ref/?cid=nrcs142p2_054242http://www.nrcs.usda.gov/wps/portal/nrcs/detail/soils/ref/?cid=nrcs142p2_054242

  14. Laboratory Methods Manuals Soil Survey Helping People Understand Soils • Procedures for measuring chemical, physical, & mineralogical properties of soils. • Soil Taxonomy uses “Operational Definitions”.

  15. Field Book for Describing & Sampling Soils Soil Survey Helping People Understand Soils • Intended as a convenient field reference containing relevant items from SSM, NSSH, and other sources.

  16. Documents Maintained by Other Disciplines Soil Survey Helping People Understand Soils • National Forestry Handbook • Ex. Site index • National Range and Pasture Handbook • Ex: Ecological Sites / Forage suitability groups • National Engineering Handbook • Ex. Hydrologic groups

  17. If They Don’t Agree - Which Version is Official” Soil Survey Helping People Understand Soils • SSM 1993 • k    Accumulation of carbonates This symbol is used to indicate the accumulation of alkaline earth carbonates, commonly calcium carbonate. • 12th Edition Keys , 2014 • kAccumulation of secondary carbonates This symbol indicates an accumulation of visible pedogenic calcium carbonate (less than 50 percent, by volume). Carbonate accumulations occur as carbonate ilaments, coatings, masses, nodules, disseminated carbonate, or other forms. • kkEngulfment of horizon by secondary carbonates This symbol indicates major accumulations of pedogenic calcium carbonate. The suffix kk is used when The soil fabric is plugged with fine grained pedogenic carbonate (50 percent or more, by volume) that occurs as an essentially continuous medium. The suffix corresponds to the stage III plugged horizon or higher of the carbonate morphogenetic stages (Gile et al., 1966).

  18. Summary Soil Survey Helping People Understand Soils • Standards - Provide scientific basis for soil survey. • Common standards enable a uniform program. • Taxonomy – common language, tech transfer. • Soil Survey Manual – Basic principles of soil survey • Nat. Soil Survey Handbook – Policy & Procedures • Field Book – Convenient field reference. • Lab Methods Manual – Behind our operational definitions. • Other Documents – Integrate other discipline’s science.

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