  The chemical evolution of the Galactic bulge is treated here in the context
of an inside-out model for the Galaxy formation. We assume that this central
region evolved even faster than the Galactic halo and test the effect of
changing the slope of the IMF on the predicted stellar metallicity distribution
for bulge stars. An IMF favoring the formation of massive stars is found to
improve the agreement with the most recently observed metallicity distribution
of bulge K giants. Then, we make specific predictions about temporal evolution
of several light and heavy species in the Galactic bulge. We predict that
alpha-elements should be enhanced relative to Fe for most of the [Fe/H] range,
with different degrees of enhancement due to the different nucleosynthetic
history of each element, and show that Lithium abundance should follow a trend
with metallicity similar to that found for the solar neighbourhood. Several
possible stellar Li sources are discussed.
