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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/27/3/JEQ0270030515
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| Publication Type:
| Refereed |
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| Author(s): | Stamm, C.;
Flühler, H.;
Gächter, R.;
Leuenberger, J.;
Wunderli, H. |
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| Author Affiliation: | Stamm, Flühler, Leuenberger, & Wunderli: Institute of Terrestrial Ecology, Soil Physics, Grabenstr. 3, 8952 Schlieren, ETHZ, Switzerland. Gächter: Swiss Federal Institute for Environmental Sciences and Technology (EAWAG), Limnological Research Center, 6047 Kastanienbaum, Switzerland. |
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| Title: | Preferential transport of phosphorous in drained grassland soils |
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| Section: | Technical reports: Soil processes and chemical transport
Other records with the "Technical reports: Soil processes and chemical transport" Section
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| Source: | Journal of Environmental Quality. Vol. 27, No. 3, May/June 1998, p. 515-522. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Phosphorus; Grasslands; Drainage; Soil water movement; Surface runoff; Fate; Transport (chemical)
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| Abstract/Contents: | "Phosphorus is the limiting factor for primary production in most freshwater ecosystems. In many areas, diffuse P losses from intensively cultivated land cause severe eutrophication of surface waters. We investigated the P export from two drainage systems under intensively used grassland in a catchment of the Swiss Plateau. Flow rate and nutrient concentrations were measured with a high temporal resolution during discharge events. During most flow peaks, P concentrations strongly increased with increasing flow rates. Concentrations of soluble-reactive P (SRP) reached up to 155 μmol L⁻¹. Phosphorus was mainly transported as soluble-reactive and particulate P. Organic P compounds, as well as P associated with colloids between 0.05 and 0.45 μm in effective diameter, were of minor importance. Estimated P loads from the drainage systems were 227 g SRP ha⁻¹ within a period of 2.5 mo at site I and 1290 g ha⁻¹ during 6 mo at site II. Estimation uncertainty was large (±21 and ±36% for the two sites, respectively) due to the weak correlation between discharge and concentration for all data from a given site. Water-extractable P in the soil was concentrated in the uppermost layer of the profiles or, for short periods after spreading of manure, deposited on the vegetation. The discharge-concentration relationship indicated that P was transported through preferential flow paths extending from close to the surface to the drains. Sprinkling experiments with a blue dye confirmed this conclusion. At one site, we observed preferential flow in a downhill direction within the saturated zone." |
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| Language: | English |
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| References: | 43 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Stamm, C., H. Flühler, R. Gächter, J. Leuenberger, and H. Wunderli. 1998. Preferential transport of phosphorous in drained grassland soils. J. Environ. Qual. 27(3):p. 515-522. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/pdfs/27/3/JEQ0270030515
Last checked: 12/12/2016
Requires: PDF Reader
Notes: Item is within a limited-access website |
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MSU catalog number: S 900 .J6 |
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