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Increasing the cost-effectiveness of water quality improvements through pollution abatement target-setting at different spatial scales.

Publikation: Working paper/Preprint Working paperForskning

  • Mikołaj Czajkowski, Warsaw Ecological Economic Center, Polen
  • Hans Estrup Andersen
  • Gitte Blicher-Mathiesen
  • Wiktor Budziński, University of Warsaw, Polen
  • Katarina Elofsson
  • Jan Hagemejer, University of Warsaw, Polen
  • Berit Hasler
  • Christoph Humborg, Stockholm University, Baltic Nest Institute, Baltic Nest Institute, Stockholm University, Univ Helsinki, University of Helsinki, Tvarminne Zool Stn, Sverige
  • James C.R. Smart, Griffith University, Australien
  • Erik Smedberg, Stockholm University, Sverige
  • Per Stålnacke, Norwegian Institute of Bioeconomy Research, Norge
  • Hans Thodsen
  • Adam Was, Warsaw University of Life Sciences, Polen
  • Maciej Wilamowski, University of Warsaw, Polen
  • Tomasz Żylicz, University of Warsaw, Polen
  • Nick Hanley, University of Glasgow, Storbritannien
In this paper, we investigate the potential gains in cost-effectiveness from changing the spatial scale at which nutrient reduction targets are set for the Baltic Sea, focusing on nutrient
loadings associated with agriculture. Costs of achieving loadings reductions are compared across five levels of spatial scale, namely the entire Baltic Sea; the marine basin level; the country level; the watershed level; and the grid square level. A novel highly disaggregated model, which represents decreases in agricultural profits, changes in root zone N concentrations and transport to the Baltic Sea is proposed, and is then used to estimate the gains in cost-effectiveness from changing the spatial scale of nutrient reduction targets. The model includes 14 Baltic Sea marine basins, 14 countries, 117 watersheds and 19,023 10-by-10 km grid squares. A range of policy options are identified which approach the cost-effective reductions in N loadings identified by the constrained optimization model. We argue that our results have important implications for both domestic and international policy design for achieving water quality improvements where nonpoint pollution is a key stressor of water quality.
UdgiverFaculty of Economic Sciences, University of Warsaw
Vol/bindWorking Papers 2020-02
Antal sider29
StatusUdgivet - 2020
SerietitelWorking papers

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