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The maps can be used to identify areas where it is: • important to avoid land use that could lead to negative impacts from acid sulphate soil or • appropriate to take measures to reduce the environmental impact of soils The modeled map shows the predicted distribution of acid sulphate soil. The point observations come from mapping and sampling of acid sulphate soils carried out within various projects at SGU. Both the point observations and the surface-covering model are divided into three classes: • ‘Non-acid sulphate soil’ • ‘Active acid sulphate soil on potential acidic sulphate soil’ • ‘Potential acid sulphate soil’ In addition, for each modelled class, there is a separate break that shows how safe the classification is in each cell (from 0 – 100 percent probability). In southern Sweden, acidic sulphae soils are often found in areas that are reported on the soil type map as mud clay, clay mud or mud. It is therefore possible to use the point observations in combination with the soil type map to get an overview of where acidic sulphate soils may occur. The point objects reported are also included in the SGU product called Soil Layer Consequences. There is more information about the soils of the sites and the power of the soil layers. 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