humus horizon (< 10 cm) on solid rock (carbonate or not carbonate) or unconsolidated sediment (like sand, loam, loess). Initial soils can be found both in lowland areas and in mountains. Forming factor of soils from that order can be solid bedrock resistant to weathering, dynamic geomorphologic processes (like erosion) or fluvial accumulation. - Type 1.1 "Rocky initial soils" (; WRB: Lithic Leptosol, Nudilithic Leptosol, Lithic Leptosol (Calcaric); ST: Lithic Udorthents, Lithic Haplrendolls) - Type 1.2 "Rubble initial soils" (; WRB: Haplic Leptosol (Dystric), Leptic Regosol (Dystric), Haplic Leptosol (Calcaric); ST: Lithic Udorthents, Typic Udorthents, Lithic Udifolists) - Type 1.3 "Erosional initial soils" (; WRB: Haplic Regosol; ST: Typic Udorthents) - Type 1.4 "Accumulative initial soils" (; WRB: Haplic Fluvisol; ST: Typic Udifluvents) Order 2. Weakly developed soils (; WRB: Leptosols, Regosols; ST: Entisols) Soils from that order are the next development stage after initial soils. Humus horizon is deeper and under it are weekly developed genetic soil horizons which are not yet fulfilling all conditions of diagnostic horizons (like mollic, cambic, sideric, glossic etc.). - Type 2.1 "Rankers" (; WRB: Haplic Regosol (Dystric) or (Dystic, Folic), Leptic Regosol (Skeletic); ST: Lithic or Typic Udorthents, Lithic Udifolists) - Type 2.2 "Rendzinas" (; WRB: Rendzic Leptosol, Folic Rendzic Leptosol, Haplic Leptosol (Calcaric), Folic Leptosol (Calcaric); ST: Lithic Udorthents, Typic Udorthents, Lithic Haplrendolls) - Type 2.3 "Pararendzinas" (; WRB: Haplic Regosol (Calcaric); ST: Typie Udorthents, Typic Eutrudepts) - Type 2.4 "Arenosols" (; WRB: Haplic Arenosol; ST: Typic Udipsamments) - Type 2.5 "Fluvisols" (; WRB: Haplic Fluvisol; ST: Typic Udifhivents) - Type 2.6 "Erosional weakly developed soils" (; WRB: Haplic Regosol; ST: Typic Udorthents) Order 3. Brown forest soils (Brown earths, ; WRB: Cambisols; ST: Inceptisols - Udepts) This order includes all soils with cambic horizon, which is formed by weathering process without well seen eluviation. They have various genesis, parent material, properties and agricultural fertility. - Type 3.1 "Eutrophic brown soils" (; WRB: Haplic Cambisol, Haplic or Stagnic or Endogleyic or Vertic Cambisol (Eutric); ST: Typic or Humic or Aquic or Oxyaquic or Vertic Eutrudepts) - Type 3.2 "Dystrophic brown soils" (; WRB: Haplic or Stagnic Cambisol (Dystric), Endogleyic or Vertic Cambisol (Eutric); ST: Typic or Humic or Spodic or Aquic Dystrudepts, Oxyaquic or Vertic Eutrudepts) - Type 3.3 "Brown fluvisols" (; WRB: Fluvic Cambisol, Fluvic, Endogeyic Cambisol; ST: Fluventic or Oxyaquic Eutrudepts) - Type 3.4 "Brown rendzinas" (; WRB: Cambic Leptosol