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Book: Aquic Conditions and Hydric Soils: The Problem Soils
Published by: Soil Science Society of America



  1.  p. 113-131
    SSSA Special Publication 50.
    Aquic Conditions and Hydric Soils: The Problem Soils

    M. J. Vepraskas and S. W. Sprecher (ed.)

    ISBN: 978-0-89118-945-9


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Hydrology, Morphology, and Redox Potentials in Four Soils of South Central Alaska

  1. Mark H. Clark and
  2. Chien-Lu Ping
  1. Natural Resources Conservation Service, Palmer, Alaska
    University of Alaska Fairbanks, Palmer, Alaska


Seasonally and continuously wet soils are extensive in south central Alaska and have important wetland and water quality values. The object of this study was to correlate hydrologic and morphologic characteristics of four representative soils of the area. Soils are classified as Typic Cryochrepts, Humic Cryaquepts, and Typic Cryaquepts. Soil properties measured included depth to water table, soil water tension, redox potentials, soil temperature, and snow depth. A correlation existed between depth of seasonally high water table and redoximorphic features in the Humic Cryaquept and lypic Cryaquept soils. High water tables during spring corresponded to periods of maximum recharge from snow and during late summer and fall from increased precipitation. The Typic Cryochrepts had redoximorphic features that appeared to have formed under unsaturated conditions above an annual frost table. Low redox potentials, suggesting the presence of Fe+2, were observed at soil temperatures below 5°C at all sites.

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Copyright © 1997. Copyright © 1997 by the Soil Science Society of America, Inc., 5585 Guilford Rd., Madison, WI 53711 USA