Beitrag zum Elementaustrag mit dem Sickerwasser unter verschiedenen Ökosystemen im nordwestdeutschen Flachland

Contribution to the element output with seepage under different ecosystems in the flat plains of Northwest Germany Over a period of one year samples of seepage water were taken from 3 different ecosystems of the pleistocene lowlands of Northwest Germany. A mixed crop of oak, a pure pine forest and a heathland area were chosen. The ions H, Na, K, Ca, Mg, Mn, Fe, Al, PO₄, SO₄, Cl, NO₃ and NH₄ were analysed. A balance calculation was done based on measurements or estimations of total evaporation and on measurements of element input with rainfall. The data indicate different interception (dry deposition) rates of air pollutants for the 3 stands. Al-ions were found in the soil solution under the pine stand and under the heathland area in a depth of 1.2 m. This status has not yet developed in the soil of the oak stand, but seems to be reached soon.