Change of Nitrate Nitrogen Concentration of Ground Water in Relation to Toposequence Land Use

Abstract

The water table of investigated fields was high and the ground water flowed from heavy fertilized renovated grassland to non-fertilized meadow. The concentration of nitrate nitrogen in shallow ground water decreased rapidly, when it flowed into meadow. There is a possibility to reduce nitrate nitrogen concentration in ground water by locating meadow as buffer zone along streams.