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dc.contributor.author
Hahn, Claudia
dc.contributor.author
Prasuhn, Volker
dc.contributor.author
Stamm, Christian
dc.contributor.author
Lazzarotto, Patrick
dc.contributor.author
Evangelou, Michael W.H.
dc.contributor.author
Schulin, R.
dc.date.accessioned
2019-06-25T09:20:05Z
dc.date.available
2017-06-11T00:24:19Z
dc.date.available
2019-06-25T09:04:30Z
dc.date.available
2019-06-25T09:20:05Z
dc.date.issued
2013
dc.identifier.issn
1027-5606
dc.identifier.issn
1607-7938
dc.identifier.other
10.5194/hess-17-3679-2013
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/75009
dc.identifier.doi
10.3929/ethz-b-000075009
dc.description.abstract
Eutrophication of surface waters due to diffuse phosphorus (P) losses continues to be a severe water quality problem worldwide, causing the loss of ecosystem functions of the respective water bodies. Phosphorus in runoff often originates from a small fraction of a catchment only. Targeting mitigation measures to these critical source areas (CSAs) is expected to be most efficient and cost-effective, but requires suitable tools. Here we investigated the capability of the parsimonious Rainfall-Runoff-Phosphorus (RRP) model to identify CSAs in grassland-dominated catchments based on readily available soil and topographic data. After simultaneous calibration on runoff data from four small hilly catchments on the Swiss Plateau, the model was validated on a different catchment in the same region without further calibration. The RRP model adequately simulated the discharge and dissolved reactive P (DRP) export from the validation catchment. Sensitivity analysis showed that the model predictions were robust with respect to the classification of soils into "poorly drained" and "well drained", based on the available soil map. Comparing spatial hydrological model predictions with field data from the validation catchment provided further evidence that the assumptions underlying the model are valid and that the model adequately accounts for the dominant P export processes in the target region. Thus, the parsimonious RRP model is a valuable tool that can be used to determine CSAs. Despite the considerable predictive uncertainty regarding the spatial extent of CSAs, the RRP can provide guidance for the implementation of mitigation measures. The model helps to identify those parts of a catchment where high DRP losses are expected or can be excluded with high confidence. Legacy P was predicted to be the dominant source for DRP losses and thus, in combination with hydrologic active areas, a high risk for water quality.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Copernicus
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Prediction of dissolved reactive phosphorus losses from small agricultural catchments: calibration and validation of a parsimonious model
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
dc.date.published
2013-10-01
ethz.journal.title
Hydrology and Earth System Sciences
ethz.journal.volume
17
en_US
ethz.journal.issue
10
en_US
ethz.journal.abbreviated
Hydrol. earth syst. sci.
ethz.pages.start
3679
en_US
ethz.pages.end
3693
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
001881462
ethz.publication.place
Göttingen
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02722 - Institut für Terrestrische Oekosysteme / Institute of Terrestrial Ecosystems::03299 - Schulin, Rainer (emeritus)
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02722 - Institut für Terrestrische Oekosysteme / Institute of Terrestrial Ecosystems::03299 - Schulin, Rainer (emeritus)
ethz.date.deposited
2017-06-11T00:25:18Z
ethz.source
ECIT
ethz.identifier.importid
imp5936513a6f88711117
ethz.ecitpid
pub:118591
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-19T08:47:50Z
ethz.rosetta.lastUpdated
2020-02-15T19:49:50Z
ethz.rosetta.versionExported
true
ethz.COinS
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