Frequency map showing share of forested area consisting of soil parent material class peat

The unconsolidated soil layer (regolith) is according to the way it was formed, classified into different types of parent material for soil formation. Type of parent material is assessed in the dug trial pit at the same depth as for the assessment of texture (variable Texture).

Soil parent material is classified according to:

Soil textural classes describe grain size distribution in the mineral soil, and in the first place refer to the dominating grain size within the fraction with a diameter < 20 mm (quadratic mesh).

Maps were produced by merging and combining classes for soil parent material and texture according to the following. Bold letters here indicate dominance of this fraction: