Nitrate retention capacity Saarland

The map shows the edaphic factors of soil nitrate retention based on the following factors: Field capacity in rootable soil space, storage water, inclination for the formation of dry cracks and mineralisation potential in organic substrates. The method is based on a method of HLUG (1997). Derivation based on BÜK 100. Attribute fields: WERTADD2 = number of soil unit of the BÜK 100 (1 to 41, 999 = settlement areas), WERT = classified field capacity in rootable soil space [very high (400 mm), high (300-400 mm), medium — high (200-400 mm), medium (200-300 mm), low — medium (100-300 mm), low (100-200 mm), very low — low (0-200 mm) or not rated], WERTADD1 = impact of congestion (weak to medium or medium to high), WERTADD2 = number of soil unit of the BÜK 100 (1 to 41, 999 = settlement area), WERTADD3 = inclination to form dry cracks (yes/no), WERTADD4 = entry with increased mineralisation potential by organic substrates, data were imported into the GDZ and modeled there as values of the multifeature class soil state, which is composed of the flaky feature class GDZ2010.A_gybzst and the business table with values (GDZ2010.gybzst); subsequently, the values for the parameter nitrate retention capacity for the Saarland viewing space were exported to the filegeodatabase GDZ_GDB.