Integrated Agricultural and Hydrological Modeling within an Intensive Livestock Region

Abstract

An interdisciplinary model network consisting of the regional agricultural economic model RAUMIS and the hydro(geo)logical models GROWA/WEKU is used to analyze the effect of different scenarios of maximum agricultural nitrogen balance surplus on water quality. The study area is the federal state of Lower Saxony, Germany, which features heterogeneous natural site conditions as well as agricultural production structures. A focus of the study is the modeling of supra-regional manure transports that, according to the model's results, considerably increase due to a lowering of maximum nitrogen balance surpluses. The assessment of the examined nitrogen reduction measures reveals that adequate indicators have to be applied. In this regard, the model results show that even though the analyzed measure leads to a substantial overall reduction of agricultural nitrogen surpluses, nitrogen discharges into surface and groundwater can regionally increase.

Citation

Kreins, P., Gömann, H., Herrmann, S., Kunkel, R. and Wendland, F. (2007), "Integrated Agricultural and Hydrological Modeling within an Intensive Livestock Region", Erickson, J.D., Messner, F. and Ring, I. (Ed.) Ecological Economics of Sustainable Watershed Management (Advances in the Economics of Environmental Resources, Vol. 7), Emerald Group Publishing Limited, Leeds, pp. 113-142. https://doi.org/10.1016/S1569-3740(07)07006-X