Relative binding strength for heavy metals up to 1 m profile depth Brandenburg

This map is based on the legend units of the soil overview map with corresponding assignment of parameterised surface soil shapes. These represent a soil form society for each legend unit. The individual (surface) soil shapes were provided with parameters, including those for calculating the binding strength for heavy metals (see Hennings 2000, Chapter 2), which were determined by ground and laboratory tests. For this purpose, the corresponding parameters (soil type, humus content, pH value) were statistically derived for the same horizontal-substrate combinations (usually the median value). The sequence of horizontal-substrate combinations in the surface soil forms with their parameters (soil type, humus content, pH value, cap of the go horizon) formed the basis for calculating the relative binding strength against heavy metals (see Hennings 2000, link rule 7.1 to 7.3). For the heavy metals Fe(III), Hg, Pb, Cr(III), Cu, Al, Zn, Co, Ni, Cd and Mn, the following theme maps show the metal-specific relative binding strength for different depth ranges. This map represents the relative binding thickness for the respective heavy metal up to 1 m under GOF for the area soil shapes involved. For this purpose, all horizons including the support horizons up to 1 m under GOF are used. For each horizon, the metal-specific pH-dependent binding strength is determined and surcharges are added to the corresponding humus and clay levels. The parameters thus determined are weighted, averaged and ordinally scaled in levels 0 to 5 for the horizons up to 1 m under GOK, the maximum value being limited to 5. For different results for the soil forms of a legend unit, the dominating and subdominating ordinal scaled classified characteristics were given (see Hennings 2000, VKR 7.2).