Sediment-related transport of nutrients from southwestern watersheds

TitleSediment-related transport of nutrients from southwestern watersheds
Publication TypeJournal Article
Year of Publication1991
AuthorsBolton S.M, Ward TJ, Cole R.A
JournalJournal of Irrigation and Drainage
Date Published1991
Accession NumberJRN00140
Call Number00021
Keywordsarticle, articles, hydrology, nutrients, hydrology, sediment transport, journal, journals, nitrogen, hydrology, nutrients, hydrology, nutrients, hydrology,runoff, phosphorus, hydrology, phosphorus,runoff, rainfall simulation,hydrology, runoff, SEE <HYDROLOGY>

Data from rainfall simulation experiments conducted in Arizona and New Mexico were used to identify relationships between total suspended sediment (TSS) concentrations (kg/ha/mm of runoff) in runoff and concentrations (kg/ha/mm of runoff) of total phosphorus (TP), total volatile suspended sediment (TVSS), and total nitrogen (TN). The units of kg/ha/mm of runoff are equivalent to mg/l divided by 100. Data were collected from pinyon-juniper, ponderosa pine, short grass prairie, creosote bush, and bottomland vegetation types. Lumping data from these five vegetation types yielded a relationlship for total phosphorus of TP = 0.0013(TSS)0.83 with a linear correlation coefficient of r = 0.77. The relationship for total volatile suspended sediment was TVSS = 0.274(TSS)0.72 (r = 0.91). A poor relationship was found for total nitrogen with TN = 0.008(TSS)0.15 (with r = 0.11). These relationships were validated using data from other rainfall simulation experiments and naturally occurring ephemeral streamflow in southern New Mexico.