Geochemistry in the modern soil survey program |
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Authors: | M A Wilson R Burt S J Indorante A B Jenkins J V Chiaretti M G Ulmer J M Scheyer |
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Institution: | (1) National Soil Survey Center, USDA-NRCS, 100 Centennial Mall N., Rm. 152, MS 41, Lincoln, NE 68508, USA;(2) USDA-NRCS, 148 E. Pleasant Hill Road, Suite 105, Carbondale, IL 62903, USA;(3) USDA-NRCS, 42 Pine Crest Drive, Dover Foxcroft, ME 04426, USA;(4) USDA-NRCS, 1365 Corporate Blvd., Reno, NV 89502, USA;(5) USDA-NRCS, P.O. Box 1458, Bismarck, ND 58501, USA |
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Abstract: | Elemental analysis has played an important role in the characterization of soils since inception of the soil survey in the
US. Recent efforts in analysis of trace and major elements (geochemistry) have provided necessary data to soil survey users
in a variety of areas. The first part of this paper provides a brief overview of elemental sources, forms, mobility, and bioavailability;
critical aspects important to users of soil survey geochemical data for appropriate use and interpretations. Examples are
provided based on data gathered as part of the US soil survey program. The second part addresses the organization of sample
collection in soil survey and how soil surveys are ideally suited as a sampling strategy for soil geochemical studies. Geochemistry
is functional in characterization of soil types, determining soil processes, ecological evaluation, or issues related to soil
quality and health, such as evaluating suitability of soils for urban or agricultural land use. Applications of geochemistry
are on-going across the US and are documented herein. This analytical direction of soil survey complements historic efforts
of the National Cooperative Soil Survey Program and addresses the increasing need of soil survey users for data that assists
in understanding the influence of human activities on soil properties. |
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Keywords: | Trace elements Soil survey Pedology Parent material Anthropogenic |
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