Organic Sulfur in Throughfall, Stemflow, and Soil Solutions from Temperate Forests
Document Type
Article
Journal/Book Title/Conference
Canadian Journal of Forest Research
Volume
20
Issue
9
Publisher
National Research Council Canada
Publication Date
1990
Keywords
organic sulfur, throughfall, stemflow, soil solutions, temperate forests
First Page
1535
Last Page
1539
Abstract
In the assessment of S cycling in forest ecosystems, solutions passing through the forests are normally analyzed for inorganic SO4; other forms of S are rarely considered. In this study, organic S (estimated as the difference between total S and SO4-S) was measured in canopy and soil solutions from eight forest stands spanning a broad range of overstory and soil types. Organic-S concentrations varied among the different types of solutions and among the forests, with values ranging from 0 to 50 μmol S•L−1. Organic S was ≤10% of total S in precipitation, 5 to 54% in throughfall, 1 to 50% in stem flow, 16 to 46% in O-horizon solution, 11 to 21% in A- or E-horizon solutions, and 0 to 29% in B-horizon solutions. Organic S was positively correlated with organic C and organic N in Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) and red alder (Alnusrubra Bong.) soil solutions and in Douglas-fir stem flow (r2 = 0.68 to 0.96, p < 0.001 ). Inclusion of solution organic S in nutrient cycling budgets can alter estimates of S transfers within forests and S transport out of some forest ecosystems.
Recommended Citation
Homann, P.S., M.J. Mitchell, H. Van Miegroet, and D.W. Cole. 1990. Organic sulfur in throughfall, stemflow, and soil solutions from temperate forests. Canadian Journal of Forest Research 20: 1535-1539.
Comments
Originally published by the National Research Council - Canada. Abstract available through remote link. Subscription required to access article fulltext.