Mobility of nitrogen-15-labeled nitrate and sulfur-34-labeled sulfate during snowmelt
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Soil Science Society of America Journal. 71: 1934-1944.
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.
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.