  Dynamical friction and tidal disruption are effective mechanisms of evolution
of globular cluster systems, especially in non-axysimmetric galaxies with a
central compact nucleus. With a semi-analytical approach based on the knowledge
of the dependence of the dynamical friction and tidal disruption effects on the
relevant parameters, we are able to follow the time evolution of the globular
cluster system in a model of a triaxial galaxy and give its observable
properties to compare with observational data.
  An important result is that the flatter distribution of the globular cluster
system relatively to that of the stellar bulge, as observed in many galaxies,
can be explained by the evolution of the globular cluster system, starting from
the same density profile.
