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| Titel |
The Integrated Catchments model of Phosphorus dynamics (INCA-P), a new approach for multiple source assessment in heterogeneous river systems: model structure and equations |
| VerfasserIn |
A. J. Wade, P. G. Whitehead, D. Butterfield |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1027-5606
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| Digitales Dokument |
URL |
| Erschienen |
In: Hydrology and Earth System Sciences ; 6, no. 3 ; Nr. 6, no. 3, S.583-606 |
| Datensatznummer |
250003573
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| Publikation (Nr.) |
 copernicus.org/hess-6-583-2002.pdf |
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| Zusammenfassung |
| A
new model has been developed for assessing the effects of multiple sources of
phosphorus on the water quality and aquatic ecology in heterogeneous river
systems. The Integrated Catchments model for Phosphorus (INCA-P) is a
process-based, mass balance model that simulates the phosphorus dynamics in both
the plant/soil system and the stream. The model simulates the spatial variations
in phosphorus export from different land use types within a river system using a
semi-distributed representation, thereby accounting for the impacts of different
land management practices, such as organic and inorganic fertiliser and
wastewater applications. The land phase of INCA-P includes a simplified
representation of direct runoff, soilwater and groundwater flows, and the soil
processes that involve phosphorus. In addition, the model includes a multi-reach
in-stream component that routes water down the main river channel. It simulates
Organic and Inorganic Phosphorus concentrations in the land phase, and Total
Phosphorus (dissolved plus particulate phosphorus) concentrations in the
in-stream phase. In-stream Soluble Reactive Phosphorus concentrations are
determined from the Total Phosphorus concentrations and the macrophyte, epiphyte
and algal biomasses are simulated also. This paper describes the model structure
and equations, the limitations and the potential utility of the approach.
Keywords: modelling, water quality, phosphorus, soluble reactive phosphorus,
basin management |
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