  We use the density matrix renormalization group method to study the
properties of the one-dimensional Kondo-Heisenberg model doped with Kondo
holes. We find that the perturbation of the Kondo holes to the local
hybridization exhibits spatial oscillation pattern and its amplitude decays
exponentially with distance away from the Kondo hole sites. The hybridization
oscillation is correlated with both the charge density oscillation of the
conduction electrons and the oscillation in the correlation function of the
Heisenberg spins. In particular, we find that the oscillation wavelength for
intermediate Kondo couplings is given by the Fermi wavevector of the large
Fermi surface even before it is formed. This suggests that heavy electrons
responsible for the oscillation are already present in this regime and start to
accumulate around the to-be-formed large Fermi surface in the Brillouin zone.
