Nutrient discharge from Walker Branch Watershed. [N, P, K, Ca, Mg, Na, S] [electronic resource].
- Oak Ridge, Tenn. : Oak Ridge National Laboratory, 1977.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- Pages: 18 : digital, PDF file
- Additional Creators:
- Oak Ridge National Laboratory
United States. Department of Energy. Office of Scientific and Technical Information
- Streamflow discharge of nutrient elements (N, P, K, Ca, Mg, Na and S) has been studied on Walker Branch Watershed for up to six years. Annual discharges of N, P and S are less than atmospheric inputs whereas Ca, Mg, K and Na discharges exceed atmospheric inputs. Seasonal nutrient discharges are dependent on water yield. Concentration behavior of nutrients during storms has been used to identify processes within the watershed influencing nutrient release from the catchment. During storms, three patterns of concentration behavior are observed: dilution of concentration during stormflow (Ca and Mg); concentration increases during storms (N and S); and little change in concentration (dissolved K, P, Na) except for some concentration increase during autumn storms. These different patterns are caused by processes such as bedrock weathering, canopy and litter leaching, and expansion of the stream channel into variable source areas. Stormflow discharge is especially important in the transport of nitrogen and other elements primarily incorporated in organic matter.
- Published through SciTech Connect.
Lake Jackson watershed study: description of sites, methodology and scope of research, Edgewater, MD, USA, 28 Feb 1977.
Henderson, G.S.; Hunley, A.; Selvidge, W.
- Funding Information:
View MARC record | catkey: 14147680