  The knee of cosmic ray spectra reflects the maximum energy accelerated by
galactic cosmic ray sources or the limit to the ability of galaxy to bind
cosmic rays. The measuring of individual energy spectra is a crucial tool to
ascertain the origin of the knee. The Extensive Air Shower of cosmic rays in
the knee energy region is simulated via CORSIKA software. The energy resolution
for different secondary components and primary nuclei identification capability
are studied. The energy reconstruction by using electromagnetic particles in
the energy around knee is better than by using other secondary particles. The
resolution is 10-19 percent for proton, and 4-8 percent for iron. For the case
of primary nuclei identification capability, the discriminability of density of
muons is best both at low (around 100 TeV) and high (around 10 PeV) energy, the
discriminability of the shape of lateral distribution of electron and
gamma-rays are good at low energy and the discriminability of density of
neutrons is good at high energy. The differences between the lateral
distributions of secondary particles simulated by EPOS-LHC and QGSJet-II-04
hadronic model are also studied. The results in this work can provide important
information for selecting the secondary components and detector type during
energy reconstruction and identifying the primary nuclei of cosmic rays in the
knee region.
