| Authors | KRONVANG B., BEHRENDT H., ANDERSEN H., ARHEIMER B., BARR A., BORGVANG S., BOURAOUI F., GROENENDIJK P., HOFFMAN L., LO PORTO A., SCHOUMANS O., SILGRAM M. |
| Text | 42311 2009 10.1039/b900101h ISI Web of Science WOS 000264098400011 SOURCE APPORTIONMENT AGRICULTURAL AREAS RIVER BASINS NITROGEN LAKES ENSEMBLE MODELLING OF NUTRIENT LOADS AND NUTRIENT LOAD PARTITIONING IN 17 EUROPEAN CATCHMENTS KRONVANG B., BEHRENDT H., ANDERSEN H., ARHEIMER B., BARR A., BORGVANG S., BOURAOUI F., GROENENDIJK P., HOFFMAN L., LO PORTO A., SCHOUMANS O., SILGRAM M. National Environmental Research Institute, Silkeborg, Denmark Alterra, P.O. Box 47, 6700 AA Wageningen, Netherlands ADAS Ltd, Wergs Road, Wolverhampton, UK WV6 8TQ EC JRC, Ispra, Italy Institut fEURur Gewaesseroekologie und Binnenfischerei, Berlin, Germany Swedish University of Agricultural Sciences, Uppsala, Sweden National Technical University of Athens, Faculty of Civil Engineering, Department of Water Resources, Hydraulic and Maritime Engineering, Athens, Greece Instituto di Ricerca sulle Acque, Bari, Italy Beture Cerec Saint Quentin en Yvelines, Lyon, France Federal Environmental Agency Ltd. FEA Ltd. , Vienna, Austria Finnish Environment Institute FEI , Helsinki, Finland Bioforsk, Norwegian Institute for Agricultural and Environmental Research, Soil and Environment Division, Norway Centre de Recherche Public Gabriel Lippmann CRP GL , Luxembourg Kirk McClure Morton KMM , Belfast, Ireland Swedish University of Agricultural Sciences, Uppsala, Sweden An ensemble of nutrient models was applied in 17 European catchments to analyse the variation that appears after simulation of net nutrient loads and partitioning of nutrient loads at catchment scale. Eight models for N and five models for P were applied in three core catchments covering European wide gradients in climate, topography, soil types and land use Vansjo Hobol Norway , Ouse Yorkshire, UK and Enza Italy . Moreover, each of the models was applied in 3 14 other EUROHARP catchments in order to inter compare the outcome of the nutrient load partitioning at a wider European scale. The results of the nutrient load partitioning show a variation in the computed average annual nitrogen and phosphorus loss from agricultural land within the 17 catchments between 19.1 34.6 kg N ha 1 and 0.12 1.67 kg P ha 1 . All the applied nutrient models show that the catchment specific variation range and standard deviation in the model results is lowest when simulating the net nutrient load and becomes increasingly higher for simulation of the gross nutrient loss from agricultural land and highest for the simulations of the gross nutrient loss from other diffuse sources in the core catchments. The average coefficient of variation for the model simulations of gross P loss from agricultural land is nearly twice as high 67% as for the model simulations of gross N loss from agricultural land 40% . The variation involved in model simulations of net nutrient load and gross nutrient losses in European catchments was due to regional factors and the presence or absence of large lakes within the catchment. 11 3 Articolo pubblicato JEM_ensemble_modelling.pdf Articolo in rivista Royal Society of Chemistry, 1464 0325 Journal of environmental monitoring Print Journal of environmental monitoring Print J. environ. monit. Print Journal of environmental monitoring Print JEM Cambridge. Print Print antonio.loporto LO PORTO ANTONIO TA.P04.005.006 Gestione a scala di bacino delle risorse idriche e sostenibilita dell uso irriguo in agricoltura |
