Mobility of nitrogen-15-labeled nitrate and sulfur-34-labeled sulfate during snowmelt

John Campbell; Myron J. Mitchell; Bernhard Mayer; Peter M. Groffman; Lynn M. Christenson

doi:10.2136/sssaj2006.0283

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Mobility of nitrogen-15-labeled nitrate and sulfur-34-labeled sulfate during snowmelt

Informally Refereed

Authors:

John Campbell, Myron J. Mitchell, Bernhard Mayer, Peter M. Groffman, Lynn M. Christenson

Year:

2007

Type:

Scientific Journal

Station:

Northern Research Station

DOI:

https://doi.org/10.2136/sssaj2006.0283

Source:

Soil Science Society of America Journal. 71: 1934-1944.

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Abstract

The objective of this study was to investigate the winter dynamics of SO₄ ²⁻ and NO₃ ⁻ in a forested soil to better understand controls on these acidifying anions during snowmelt. In February 2004, a stable isotopic tracer solution with 93 atom% ³⁴S as H₂ ³⁴SO₄ and 99 atom% ¹⁵N as NH₄ ¹⁵NO₃ was applied to the snowpack at the Hubbard Brook Experimental Forest in New Hampshire. The chemical and isotopic compositions of throughfall, snow, snowmelt, and forest floor leachates were monitored for 10 mo following the addition of the tracers.

Citation

Campbell, John L.; Mitchell, Myron J.; Mayer, Bernhard; Groffman, Peter M.; Christenson, Lynn M. 2007. Mobility of nitrogen-15-labeled nitrate and sulfur-34-labeled sulfate during snowmelt. Soil Science Society of America Journal. 71: 1934-1944.