Various spatial distributions of crystalline silicates and their modeled infrared spectra. Left panels: spatial distributions of crystalline silicates with different parameters as a result of radial transport processes after 1 Myr. Crystalline silicates from the crystal reservoir (horizontal region in the inner disk) diffuse and approach the initial crystallinity in the outer disk. The crystallinity was estimated from the surface density of crystalline silicates divided by the surface density of total dust (Σ_cryst/Σ_dust). Right panels: infrared spectra of the different disk models.