The aim of this study is to suggest a modification of the official Systematics of Polish Soils (PTG 1989) as well as of the World Reference Base for Soil Resources (FAO-ISSS-ISRIC, 1998). As a result, both systems will become more precise in describing the variety of soils of Poland (the first system) and of the entire world (the second system). The above aim will be supported by the following research tasks:

1. comparing the definitions of diagnostics used in the Systematics of Polish Soils with the ones used in the WRB classification;
2. comparing the soil units differentiated in the Systematics of Polish Soils with the ones used in the WRB classification;
3. working out the correlation between the Polish system and the WRB;
4. studying the usefulness of the WRB classification for the soil conditions of Poland.