Geochemical reactivity of rocks of the Czech Republic

In this study, we present a map of the geochemical reactivity of rocks of the Czech Republic at a scale of 1:1,000,000 based on a geodatabase of regional geological maps at a scale of 1:50,000, as well as description of the method of how the map was developed. Research for this study was performed by compiling information between a database of regional geological maps and data from the lithogeochemical database to calculate and classify the rocks into eight groups according to carbonate content and coefficient of alkalinity. Rocks in these groups were further subdivided according to the susceptibility to weathering, forming a total of 28 categories. Knowledge of geochemical background is essential for making informed landscape management decisions, as this information determines the areas with higher levels of susceptibility to soil acidification and/or nutrient degradation. The map from this study will therefore provide essential information, albeit incomplete, to aid landscape management practitioners.