Valorizations of vegetation patches are usually carried out based on occurrence of rare and legal protected plant species. Sometimes a lack of this species causes problems in comparison of different patches. In this case useful could be some ecological factors, like diversity and disturbance indexes. In 2011 phytosociological research was carried out in 5 meadow complexes in area of the Oświęcim Basin. To valorize different plant communities following factors were calculated: disturbance index, anthropophytization index, Shannon diversity index and Simpson diversity index
