  The composition, including the ionic charge states and elemental abundances
of heavy elements, within interplanetary coronal mass ejections (ICMEs) has
tight correlations with their source regions and eruption processes. This can
help analyze the eruption mechanisms and plasma origins of CMEs, and deepen our
understanding of energetic solar activities. The active regions and quiet-Sun
regions have different physical properties, thus from a statistical point of
view, ICMEs originating from the two types of regions should exhibit different
compositional characteristics. To demonstrate the differences comprehensively,
we conduct survey studies on the ionic charge states of five elements (Mg, Fe,
Si, C, and O) and the relative abundances of six elements (Mg/O, Fe/O, Si/O,
C/O, Ne/O, and He/O) within ICMEs from 1998 February to 2011 August through the
data of advanced composition explorer. The results show that ICMEs from active
regions have higher ionic charge states and relative abundances than those from
quiet-Sun regions. For the active-region ICMEs, we further analyze the
relations between their composition and flare class, and find a positive
relationship between them, i.e., the higher classes of the associated flares,
the larger means of ionic charge states and relative abundances (except the
C/O) within ICMEs. As more (less) fractions of ICMEs originate from active
regions around solar maximum (minimum), and active-region ICMEs usually are
associated with higher-class flares, our studies might answer why ICME
composition measured near 1 au exhibits the solar cycle dependence.
