title: Cost-Effectiveness Analysis of Surface Flow Constructed Wetlands (SFCW) for Nutrient Reduction in Drainage Discharge from Agricultural Fields in Denmark.
abstract: Constructed wetlands have been proposed as cost-effective and more targeted technologies in the reduction of nitrogen and phosphorous water pollution in drainage losses from agricultural fields in Denmark. Using two pig farms and one dairy farm situated in a pumped lowland catchment as case studies, this paper explores the feasibility of implementing surface flow constructed wetlands (SFCW) based on their cost effectiveness. Sensitivity analysis is conducted by varying the cost elements of the wetlands in order to establish the most cost-effective scenario and a comparison with the existing nutrients reduction measures carried out. The analyses show that the cost effectiveness of the SFCW is higher in the drainage catchments with higher nutrient loads. The range of the cost effectiveness ratio on nitrogen reduction differs distinctively with that of catch crop measure. The study concludes that SFCW could be a better optimal nutrients reduction measure in drainage catchments characterized with higher nutrient loads.
authors.affiliation: Department of Food and Resource Economics, University of Copenhagen, Rølighedsvej 25, 1958, Frederiksberg, Denmark. fgg@ifro.ku.dk.
authors.forename: F G
authors.identifier: http://orcid.org/0000-0001-9903-6799
authors.initials: FG
authors.lastname: Gachango
authors.affiliation: Department of Food and Resource Economics, University of Copenhagen, Rølighedsvej 25, 1958, Frederiksberg, Denmark.
authors.forename: S M
authors.initials: SM
authors.lastname: Pedersen
authors.affiliation: Department of Agroecology - Soil Physics and Hydropedology, Aarhus University, Blichers Allé 20, 8830, Tjele, Denmark.
authors.forename: C
authors.initials: C
authors.lastname: Kjaergaard
mesh_terms: D000383:Agriculture / Q000191:economics / Q000379:methods*; D000818:Animals; D003362:Cost-Benefit Analysis; D003718:Denmark; D009584:Nitrogen / Q000032:analysis* / Q000737:chemistry; D010758:Phosphorus / Q000032:analysis* / Q000737:chemistry; D013552:Swine; D014872:Water Movements; D014876:Water Pollution / Q000032:analysis / Q000191:economics; D053833:Wetlands
chemical_list: D010758:Phosphorus; D009584:Nitrogen
keywords: Cost effectiveness; Drainage catchment; Efficiency; Nutrient load