Increasing the cost-effectiveness of nutrient reduction targets using different spatial scales
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Increasing the cost-effectiveness of nutrient reduction targets using different spatial scales. / Czajkowski, Mikołaj; Andersen, Hans E.; Blicher-Mathiesen, Gitte; Budziński, Wiktor; Elofsson, Katarina; Hagemejer, Jan; Hasler, Berit; Humborg, Christoph; Smart, James C.R.; Smedberg, Erik; Thodsen, Hans; Wąs, Adam; Wilamowski, Maciej; Żylicz, Tomasz; Hanley, Nick.
In: Science of the Total Environment, Vol. 790, 147824, 2021.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Increasing the cost-effectiveness of nutrient reduction targets using different spatial scales
AU - Czajkowski, Mikołaj
AU - Andersen, Hans E.
AU - Blicher-Mathiesen, Gitte
AU - Budziński, Wiktor
AU - Elofsson, Katarina
AU - Hagemejer, Jan
AU - Hasler, Berit
AU - Humborg, Christoph
AU - Smart, James C.R.
AU - Smedberg, Erik
AU - Thodsen, Hans
AU - Wąs, Adam
AU - Wilamowski, Maciej
AU - Żylicz, Tomasz
AU - Hanley, Nick
N1 - Publisher Copyright: © 2021 The Authors
PY - 2021
Y1 - 2021
N2 - 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, with particular focus on nutrient loadings from agriculture. The costs of achieving loading 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 used. The model includes 14 Baltic Sea marine basins, 14 countries, 117 watersheds and 19,023 10-by-10 km grid squares. The main result which emerges is that there is a large variation in the total cost of the program depending on the spatial scale of targeting: for example, for a 40% reduction in loads, the costs of a Baltic Sea-wide target is nearly three times lower than targets set at the smallest level of spatial scale (grid square). These results have important implications for both domestic and international policy design for achieving water quality improvements where non-point pollution is a key stressor of water quality.
AB - 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, with particular focus on nutrient loadings from agriculture. The costs of achieving loading 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 used. The model includes 14 Baltic Sea marine basins, 14 countries, 117 watersheds and 19,023 10-by-10 km grid squares. The main result which emerges is that there is a large variation in the total cost of the program depending on the spatial scale of targeting: for example, for a 40% reduction in loads, the costs of a Baltic Sea-wide target is nearly three times lower than targets set at the smallest level of spatial scale (grid square). These results have important implications for both domestic and international policy design for achieving water quality improvements where non-point pollution is a key stressor of water quality.
KW - Agricultural run-off
KW - Baltic Sea
KW - Cost-effectiveness
KW - Eutrophication
KW - Nutrient pollution
U2 - 10.1016/j.scitotenv.2021.147824
DO - 10.1016/j.scitotenv.2021.147824
M3 - Journal article
C2 - 34380262
AN - SCOPUS:85108284578
VL - 790
JO - Science of the Total Environment
JF - Science of the Total Environment
SN - 0048-9697
M1 - 147824
ER -
ID: 324690711