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RECORD NUMBER: 48 OF 58

OLS Field Name OLS Field Data
Main Title Sulfur Dynamics in Mineral Horizons of Two Northern Hardwood Soils. A Column Study with (35)S.
Author Dhamala, B. R. ; Mitchell, M. J. ; Stam, A. C. ;
CORP Author State Univ. of New York Coll. of Environmental Science and Forestry, Syracuse.;Corvallis Environmental Research Lab., OR.;Empire State Electric Energy Research Corp., New York.
Publisher c1990
Year Published 1990
Report Number EPA/600/J-92/012;
Stock Number PB92-139955
Additional Subjects Soil dynamics ; Sulfur organic compounds ; Mineralization ; Land pollution ; Biogeochemistry ; Ecosystems ; Sulfur 35 ; Leaching ; Environmental transport ; Adsorption ; Sulfur oxides ; Desorption ; Immobilization ; Forests ; Nutrients ; Reprints ; Spodosols
Holdings
Library Call Number Additional Info Location Last
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Status
NTIS  PB92-139955 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 08/28/1992
Collation 18p
Abstract
Sulfur dynamics of two Spodosols were ascertained using soil columns constructed from homogenized mineral soil from northern hardwood ecosystems at the Huntington Forest (HF) in the Adirondack Mountains of New York and Bear Brook Watershed in Maine (BBWM). Columns were leached for 20 weeks with a simulated throughfall solution with (35)SO4(2-). Sulfur constituents were similar to those of other Spodosols with the organic S fractions (C-bonded S and ester sulfate) constituting over 90% of total S. HF soil columns had higher total S (14.9 micromol S/g) than that for the BBWM soil columns (7.4 micromol/g) primarily due to higher C-bonded S in the former. Analyses using both S mass balances and radioisotopes corroborate that for BBWM soil columns, SO4(2-) adsorption-desorption dominated the S biogeochemistry while in HF soil columns, organic S mineralization-immobilization processes were more important. It is suggested that similar techniques can be applied to soils in the field to ascertain the relative importances of SO4(2-) adsorption processes and organic S dynamics.