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| 024 | 7 | _ | |2 DOI |a 10.1007/s10705-009-9248-9 |
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| 041 | _ | _ | |a eng |
| 082 | _ | _ | |a 570 |
| 084 | _ | _ | |2 WoS |a Soil Science |
| 100 | 1 | _ | |a Wendland, F. |b 0 |u FZJ |0 P:(DE-Juel1)VDB4997 |
| 245 | _ | _ | |a Determination of nitrogen reduction levels necessary to reach groundwater quality targets in large river basins: The Weser basin case study, Germany Nutrient Cycling in Agroecosystems |
| 260 | _ | _ | |a Dordrecht [u.a.] |b Springer Science + Business Media B.V |c 2009 |
| 300 | _ | _ | |a 63 - 78 |
| 336 | 7 | _ | |a Journal Article |0 PUB:(DE-HGF)16 |2 PUB:(DE-HGF) |
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| 440 | _ | 0 | |a Nutrient Cycling in Agroecosystems |x 1385-1314 |0 21061 |y 1 |v 85 |
| 500 | _ | _ | |a This project was commissioned by Germany's Federal Ministry of Food, Agriculture and Consumer protection (BMELV), the River Basin Commission Weser (RBC Weser) and the Federal States Bremen, Hessen, Niedersachsen, Nordrhein-Westfalen, Sachsen-Anhalt and Thuringen. |
| 520 | _ | _ | |a We used the interdisciplinary model network REGFLUD to predict the actual mean nitrate concentration in percolation water at the scale of the Weser river basin (Germany) using an area-differentiated (100 m x 100 m) approach. REGFLUD combines the agro-economic model RAUMIS for estimating nitrogen surpluses and the hydrological models GROWA/DENUZ for assessing the nitrate leaching from the soil. The areas showing predicted nitrate concentrations in percolation water above the EU groundwater quality standard of 50 mg NO3/l, have been identified as priority areas for implementing nitrogen reduction measures. For these "hot spot'' areas a backward modelling approach was used to quantify the maximal permissible nitrogen surplus levels in agriculture to guarantee a mean long-term nitrate concentration in percolation water below 50 mg NO3/l. Research work will directly support the implementation of the EU-Water Framework Directive in the Weser basin, e.g. by using the maximal permissible nitrogen surplus levels as a framework for the derivation of regionally adapted and hence effective nitrogen reduction measures. |
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| 653 | 2 | 0 | |2 Author |a Catchment modelling |
| 653 | 2 | 0 | |2 Author |a EU-water framework directive |
| 653 | 2 | 0 | |2 Author |a Integrative agro-economic-hydrologic model network |
| 653 | 2 | 0 | |2 Author |a Maximal permissible nitrogen surplus levels |
| 653 | 2 | 0 | |2 Author |a Nitrate leaching |
| 653 | 2 | 0 | |2 Author |a Nitrate concentration in percolation water |
| 700 | 1 | _ | |a Behrendt, H. |b 1 |0 P:(DE-HGF)0 |
| 700 | 1 | _ | |a Gömann, H. |b 2 |0 P:(DE-HGF)0 |
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| 700 | 1 | _ | |a Tetzlaff, B. |b 7 |u FZJ |0 P:(DE-Juel1)129578 |
| 773 | _ | _ | |a 10.1007/s10705-009-9248-9 |g Vol. 85, p. 63 - 78 |p 63 - 78 |q 85<63 - 78 |0 PERI:(DE-600)1478384-8 |t Nutrient cycling in agroecosystems |v 85 |y 2009 |x 1385-1314 |
| 856 | 7 | _ | |u http://dx.doi.org/10.1007/s10705-009-9248-9 |
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