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Title: Preliminary investigations of hydric soil hydrology and morphology in the United States
Authors: Wakeley, James S., 1950-
Sprecher, S. W.
Lynn, Warren C.
Keywords: Hydric soils
Soil redox
Wetland delineation
Wetland hydrology
Soils testing
Publisher: U.S. Army Engineer Waterways Experiment Station
Series/Report no.: Technical Report (Wetlands Research Program (U.S.)) ; no. Technical Report WRP-DE-13
Abstract: This report presents preliminary results from the Wet Soils Monitoring Project, a cooperative research project supported jointly by the U.S. Department of Agriculture Natural Resources Conservation Service (NRCS) and the U.S. Army Engineer Waterways Experiment Station. The work is being performed under the direction of the NRCS by investigators at land-grant universities in eight states: Alaska, Indiana, Louisiana, Minnesota, New Hampshire, North Dakota, Oregon, and Texas. Investigators are using similar instruments and research designs at each site to monitor depth, duration, and frequency of soil saturation, soil temperatures, and oxidation/reduction status at various depths in soils representing a gradient from drier to wetter conditions. Preliminary results are based on 2 years of monitoring at most sites. Investigators reported time lags between soil saturation and reduction of iron ranging from several days to several weeks, depending upon temperature and other factors. Some soils were anaerobic for long periods without exhibiting iron reduction. Growing seasons based on measured soil temperatures often differed considerably from those based on soil temperature regime regions or on > 28 °F air temperatures. Longer monitoring periods are required to identify reliable morphological indicators of hydric soil hydrology.
Description: Technical Report
Gov't Doc #: Technical Report WRP-DE-13
Rights: Approved for public release; distribution is unlimited.
Size: 172 pages
Types of Materials: PDF
Appears in Collections:Technical Report

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