The floodplain forest ecosystems in the region are a part of the Weisse Elster-Pleisse-Luppe river system which flows into the Saale-Elbe river system. The symbiosis of floodplain forest ecosystems and the City of Leipzig is an extraordinary example of an interacting system between nature and man. Long-term air pollution resulting from power station and industrial activities belongs to the most important negative anthropogenic effects. The main objective of this research was to obtain data on atmospheric deposition and fluxes of nutrients in the ecosystem with regard to site development, growth, biodiversity and groundwater pollution. Two measuring sites were established to colect precipitation, throughfall, stemflow, seepage water, soil solution and groundwater. Samples were colected in two-week intervals and analysed monthly in laboratory in 1996.