Integrated analysis of the effects of agricultural management on nitrogen fluxes at landscape scale |
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Authors: | Kros J Frumau K F A Hensen A de Vries W |
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Affiliation: | aAlterra, Wageningen University and Research Centre, P.O. Box 47, 6700 AA Wageningen, The Netherlands;bEnergy Research Centre of The Netherlands, P.O. Box 1, 1755 ZG Petten, The Netherlands;cEnvironmental Systems Analysis Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, The Netherlands |
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Abstract: | The integrated modelling system INITIATOR was applied to a landscape in the northern part of the Netherlands to assess current nitrogen fluxes to air and water and the impact of various agricultural measures on these fluxes, using spatially explicit input data on animal numbers, land use, agricultural management, meteorology and soil. Average model results on NH3 deposition and N concentrations in surface water appear to be comparable to observations, but the deviation can be large at local scale, despite the use of high resolution data. Evaluated measures include: air scrubbers reducing NH3 emissions from poultry and pig housing systems, low protein feeding, reduced fertilizer amounts and low-emission stables for cattle. Low protein feeding and restrictive fertilizer application had the largest effect on both N inputs and N losses, resulting in N deposition reductions on Natura 2000 sites of 10% and 12%, respectively. |
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Keywords: | Ammonia emission Nitrous oxide emission Nitrate leaching Nitrogen runoff Modelling Natura 2000 Agricultural measures |
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