Soil-forming materials and soil texture as shown on small-scale soil maps

Information about the soil-forming materials and soil texture shown on pages of the State Soil Map (SSS) on a 1: 1 M scale, the Soil Map of the Russian Federation on a 1: 2.5 M, and several other small-scale soil maps is analyzed. Certain discrepancies exist in the approaches used to display this information, in the names of the soil textural classes and genetic groups of soil-forming materials, and in the degree of detail of their representation on separate pages of the SSS and on other soil maps compiled by different authors. To eliminate these discrepancies, it is suggested that the soil classification should be supplemented with a special section containing systematized information on the soil-forming materials existing in Russia. The manuals on soil mapping on different scales should be supplemented with recommendations on showing the soil texture and the composition of the soil-forming materials on the maps.