In situ measurements of sulfate incorporation into forest floor and soil organic matter. Strickland, T. C. Canadian Journal of Forest Research, 1986.
In situ measurements of sulfate incorporation into forest floor and soil organic matter. [pdf]Paper  abstract   bibtex   
Litter and soil from a mixed mature hardwood forest were examined for the capacity to incorporate 35S-labelled sulfate into organic matter in situ. Amounts of sulfate incorporated within 48h of field incubation were 70, 49, and 18% of added 35S per gram of substrate in the O1, O2, and A horizons, respectively. These potentials increased in the respective horizons to 74, 61 and 29% after 7 days. The incorporated 35S was predominately in the form of carbon-bonded S. In situ incorporation rates exceeded rates previously estimated by laboratory incubations and the former rates showed a positive response to increased sulfate loading.

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