Extended SWAT model for dissolved reactive phosphorus transport in tile-drained fields and catchments

Shenglan Lu, Andersen​, Hans Estrup, Hans Thodsen, Gitte Holton Rubæk and Dennis Trolle

Agricultural Water Management, 2016, vol. 175, issue C, 78-90

Abstract: We developed extensions (DrainP) for the Soil and Water Assessment Tool version 2012 (SWAT2012) to simulate leaching of dissolved reactive phosphorus (DRP) throughout soils with the Langmuir isotherm, and the subsequent transport from tile drains to streams. The DrainP module was evaluated for two small tile-drained fields and the River Odense catchment (486km2) in Denmark. DrainP not only simulated well monthly DRP yields in the tile-drained fields but also improved the overall catchment DRP yields, and provided new insights into the source allocation of DRP at the catchment scale. The simulated soil total phosphorus (TP) accumulation in the tillage layer fell within the range of measurements.

Keywords: Tile drain; DRP; Soil TP accumulation; Lowland; SWAT; Leaching; Langmuir isotherm (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:175:y:2016:i:c:p:78-90

DOI: 10.1016/j.agwat.2015.12.008

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