  The properties of stellar populations in the centers of 54 nearby lenticular
galaxies are investigated by means of 2D spectroscopy, with the Multi-Pupil
Spectrograph of the 6m telescope of SAO RAS; the unresolved nuclei and their
surrounding bulges are analysed separately. All the galaxies are divided into
four subgroups depending on the environments type. Clear distinctions between
the mean stellar ages and abundance ratios of the nuclei and of the bulges,
both, are found for the S0s in clusters and group centers, on the one hand, and
in field, on the other hand.
