WIT Press


Agricultural Non-point Load Of Nitrogen To Surface Waters. A Regional Estimation In GIS

Price

Free (open access)

Paper DOI

10.2495/GIS980101

Volume

21

Pages

11

Published

1998

Size

1,001 kb

Author(s)

J.J.M. de Klein, G.A.P.H. van den Eertwegh & F.B. Huis in 't Veld

Abstract

In the Netherlands the input of nitrogen to surface waters and groundwater from non-point-sources is a major environmental problem. About 60-90% of the total discharge of nitrogen on surface waters is caused by leaching from agricultural areas. The objective of much research is to quantify the contribution of leaching of nitrogen and to develop decision-support-systems for national and regional authorities, to study the effect of reducing the excessive use of fertiliser. In this study a method for estimating the load of nitrogen from agricultural areas using existing geographical data-input is presented. The result is a relative simp

Keywords