Environmental controls on observed spatial variability of soil pore water geochemistry in small headwater catchments underlain with permafrost
Nathan Alec Conroy,Jeffrey M. Heikoop,Emma Lathrop,Dea Musa,Brent D. Newman,Chonggang Xu,Rachael E. McCaully,Carli A. Arendt,Verity G. Salmon,Amy Breen,Vladimir Romanovsky,Katrina E. Bennett,Cathy J. Wilson,and Stan D. Wullschleger
Biological and Environmental Systems Science Division and Climate
Change Science Institute, Oak Ridge National Laboratory, Oak Ridge,
Tennessee 37831, USA
Amy Breen
International Arctic Research Center, University of Alaska, P.O. Box 757340, Fairbanks, Alaska 99775-7340, USA
Earth and Environmental Sciences Division, Los Alamos National
Laboratory, Bikini Atoll Road, Los Alamos, New Mexico 87545, USA
Stan D. Wullschleger
Biological and Environmental Systems Science Division and Climate
Change Science Institute, Oak Ridge National Laboratory, Oak Ridge,
Tennessee 37831, USA
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This study combines field observations, non-parametric statistical analyses, and thermodynamic modeling to characterize the environmental causes of the spatial variability in soil pore water solute concentrations across two Arctic catchments with varying extents of permafrost. Vegetation type, soil moisture and redox conditions, weathering and hydrologic transport, and mineral solubility were all found to be the primary drivers of the existing spatial variability of some soil pore water solutes.
This study combines field observations, non-parametric statistical analyses, and thermodynamic...
