  In this paper, we provide a pathwise spine decomposition for superprocesses
with both local and non-local branching mechanisms under a martingale change of
measure. This result complements the related results obtained in Evans (1993),
Kyprianou et al. (2012) and Liu, Ren and Song (2009) for superprocesses with
purely local branching mechanisms and in Chen, Ren and Song (2016) and
Kyprianou and Palau (2016) for multitype superprocesses. As an application of
this decomposition, we obtain necessary/sufficient conditions for the limit of
the fundamental martingale to be non-degenerate. In particular, we obtain
extinction properties of superprocesses with non-local branching mechanisms as
well as a Kesten-Stigum $L\log L$ theorem for the fundamental martingale.
