NITROGEN AND SULPHUR LOAD IN PERCOLATION WATER FROM AGRICULTURE LANDSCAPE ARE AFFECTED BY CLIMATE CHANGE

Global and climate changes influence the basic conditions for agriculture. Therefore there is not only a demand for a strict climate protection but also for an adaptation of agriculture to changing conditions. For a study region of 60x40 km within the moraine landscape of North-East Germany, mainly used for agriculture, water balance, nitrogen and sulphur loads as well as crop yields were calculated for the actual and for a possible future situation. The comparison between the Scenario 2050 and the Initial Situation in 2000 revealed significant changes of the water balance (decrease in percolation water, increase in actual evapotranspiration) as well as of the concentration of nitrogen and sulphur in the percolation water. For the study region the crop yields decrease only slightly if the CO2 fertilizing effect is taken into account. Adaptation measures in response to changing climate conditions to achieve an economically secured and sustainable agriculture are recommended.

climate change, impact assessment, nitrogen load, sulphur load, water balance, moraine landscape

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