Both indexes are used to measure similar concepts of alpha diversity (Simpson's index is less sensitive to the difference in taxa richness than Shannon's index); however, the interpretation is inverse. The lower value of Shannon's index, the lower diversity. The lower value of Simpson’s index (range: 0-1), the higher diversity. Since this is quite a non-intuitive scale, the inverse Simpson index is more frequently reported.

For your data, the inverse Simpson index can be calculated:

1/0.23 = 4.35

1/0.44 = 2.27

The inverse Simpson's index is positively correlated with Shannon's index.

Thanks so much dear Jakub

I would agree with Jakub Ruszkowski