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Modeling the impact of potential wetlands on phosphorus retention in a Swedish catchment
Linköpings universitet, Institutionen för fysik, kemi och biologi, Ekologi. Linköpings universitet, Tekniska högskolan.ORCID-id: 0000-0002-0722-6083
Swedish Meteorological and Hydrological Institute.
Swedish Meteorological and Hydrological Institute.
2005 (engelsk)Inngår i: Ambio, ISSN 0044-7447, E-ISSN 1654-7209, Vol. 34, nr 7, s. 544-551Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

In southern Sweden, wetlands are constructed to remove nitrogen (N) in agricultural catchments. The possible effects of such wetlands on riverine phosphorus (P) were also estimated using input-output data from three well-monitored wetlands. This was done to formulate a simple model for removal of P that is dependent on inflow characteristics. Next, the N- and P-reducing effects of wetlands were modeled on a catchment scale (1900 km 2) using the HBV-NP model and various assumptions about the wetland area and location. All three wetlands functioned as sinks for total P (tot-P) and for total suspended solids (TSS) with a removal of 10% to 31% and 28% to 50%, respectively. Mean P-removal rates of 17-49 kg ha(-1) yr(-1) were well simulated with the model. Catchment scale simulations indicated that wetlands were more efficient (in percentage of load) as traps for P than for N and that this may motivate the construction of wetlands for P removal far upstream from the catchment outlet.

sted, utgiver, år, opplag, sider
2005. Vol. 34, nr 7, s. 544-551
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URN: urn:nbn:se:liu:diva-53499DOI: 10.1579/0044-7447-34.7.544OAI: oai:DiVA.org:liu-53499DiVA, id: diva2:289812
Forskningsfinansiär
Swedish Research Council FormasTilgjengelig fra: 2010-01-25 Laget: 2010-01-25 Sist oppdatert: 2018-03-13

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