机译：Spectral properties of magnetohydrodynamic (MHD) turbulence with a strong back-ground mean magnetic field in 2.5-dime nsional compressible plasmas are studied by high-resolutionnumerical simulations. The spatial properties of MHD turbulences and the energy transfer pro-cess in the k-space are analyzed through angle-averaged energy spectrum. It is found that in the inertial phase, the energy spectrum index of compressible MHD turbulences during the decaying phase is evolved with time. The index varies in a quite wide regime from Kolmogorov's 5/3 to IK's 3/2 during the late simulation period. The energy spectrum index in the later nonlinear stage is also dependent on the chosen initial conditions. The spectral index increases with the increase of the initial magnetic fluctuation while the index decreases with the increase of the initial flow perturbation.
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