2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/25/2021 | 8:30 AM - 10:30 AM | Understanding mechanisms of salt transport across a landscape to promote improvements in rangeland health, Northwest South Dakota | Virtual Platform
Understanding mechanisms of salt transport across a landscape to promote improvements in rangeland health, Northwest South Dakota
Rangeland salinization influences soil and water quality across the western United States. Butte and Harding counties in northwestern South Dakota have over 10,000 identified impoundments as primary water sources that may influence or be influenced by regional soil salinity transport and concentration, endangering rangeland health, water quality, and riparian areas used by livestock and wildlife. To evaluate the spatial variability of impoundment and soil salinity, we selected 160 impoundments on public lands across 12 HUC12 subwatersheds. We measured impoundment conductivity, soil conductivity, and characterized soil salt concentrations upgradient and downgradient of each impoundment. To assess upgradient soil salt transport and its influence on impoundment and downgradient soil, we derived physical data about impoundments and their drainage area (impoundment area, impoundment drainage area, percent bare ground impoundment drainage area). Upgradient soil conductivity and impoundment conductivity are correlated, which implies salt transport from upgradient soils to impoundments. Across the study area, downgradient salinity either remained constant or increased in relation to upgradient soil salinity. Clarifying the mechanisms of salt transport that influence rangeland health and water quality degradation will promote improvements in rangeland practices throughout the region.
- Land use
- Conductivity
- Transport
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Presenters/Authors
Patrick Kozak
(), South Dakota School of Mines and Technology, patrick.kozak@mines.sdsmt.edu;
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Lisa Kunza
(), South Dakota School of Mines and Technology, lisa.kunza@sdsmt.edu;
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Kurt Chowanski
(), South Dakota School of Mines and Technology, kurt.chowanski@sdsmt.edu;
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Dan Heglund
(), South Dakota School of Mines and Technology, Daniel.Heglund@sdsmt.edu;
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