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000003703 041__ $$aeng
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000003703 084__ $$2WoS$$aEngineering, Environmental
000003703 084__ $$2WoS$$aEnvironmental Sciences
000003703 084__ $$2WoS$$aWater Resources
000003703 1001_ $$0P:(DE-Juel1)VDB4996$$aKunkel, R.$$b0$$uFZJ
000003703 245__ $$aAssessing Necessary Nutrient Reduction for Measurement Planning in Groundwater Bodies
000003703 260__ $$aLondon$$bIWA Publishing$$c2008
000003703 300__ $$a2295 - 2302
000003703 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
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000003703 440_0 $$05960$$aWater Science and Technology$$v58$$x0273-1223$$y12
000003703 500__ $$aRecord converted from VDB: 12.11.2012
000003703 520__ $$aFor the Federal State of Lower Saxony, Germany, nitrogen management options are developed and implemented in three pilot areas using new participation approaches and technologies suitable for programs of measures to reduce diffuse pollution from agriculture. As a target value for water protection measures a nitrate concentration in percolation water of 50 mg/l as an average for a larger area defined by the groundwater bodies and their hydrogeological subdivisions has been defined. An integrative emission model is used to simulate the interactions between agricultural practice, nitrogen surpluses and the nitrogen flow through the soil and aquifer to the outflow into surface waters. The actual nitrate concentrations in percolation water are calculated for the entire Federal State of Lower Saxony considering site-characteristics, N-surpluses, water balance and denitrification in the soil. The tolerable N-surpluses needed to meet the environmental target are quantified as averages for each of the hydrogeological subdivisions by "backward" calculation using this model system. The required reduction of N-surpluses was estimated by comparing the tolerable N-surpluses with the actual state of nitrogen emission. For the evaluation of the amount and efficiency of water protection measures, the required reduction of N-surpluses to accomplish the environmental target is quantified, using the current status as a reference.
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000003703 588__ $$aDataset connected to Web of Science, Pubmed
000003703 650_2 $$2MeSH$$aGeography
000003703 650_2 $$2MeSH$$aGermany
000003703 650_2 $$2MeSH$$aNitrates: analysis
000003703 650_2 $$2MeSH$$aSoil
000003703 650_2 $$2MeSH$$aWater: chemistry
000003703 650_2 $$2MeSH$$aWater Pollutants, Chemical: analysis
000003703 650_2 $$2MeSH$$aWater Supply
000003703 650_7 $$00$$2NLM Chemicals$$aNitrates
000003703 650_7 $$00$$2NLM Chemicals$$aSoil
000003703 650_7 $$00$$2NLM Chemicals$$aWater Pollutants, Chemical
000003703 650_7 $$07732-18-5$$2NLM Chemicals$$aWater
000003703 650_7 $$2WoSType$$aJ
000003703 65320 $$2Author$$acatchment management
000003703 65320 $$2Author$$adiffuse source pollution
000003703 65320 $$2Author$$amitigation methods
000003703 65320 $$2Author$$ariver basin management
000003703 65320 $$2Author$$aWater framework directive
000003703 7001_ $$0P:(DE-HGF)0$$aEisele, M.$$b1
000003703 7001_ $$0P:(DE-Juel1)VDB4997$$aWendland, F.$$b2$$uFZJ
000003703 773__ $$0PERI:(DE-600)2024780-1$$a10.2166/wst.2008.821$$gVol. 58, p. 2295 - 2302$$p2295 - 2302$$q58<2295 - 2302$$tWater science and technology$$v58$$x0273-1223$$y2008
000003703 8567_ $$uhttp://dx.doi.org/10.2166/wst.2008.821
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000003703 9141_ $$aNachtrag$$y2008
000003703 915__ $$0StatID:(DE-HGF)0010$$aJCR/ISI refereed
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