Understanding different influences on invasion isnecessary for regional landscape management. Here we explored the effects of local and adjacent land-scape factors on exotic vegetation distribution along the Pengxi River controlled by the Three GorgesDam. Vegetation data were collected in 5 × 1 m quadrats along transect lines perpendicular to the river-bank between 172 m and 178 m elevation. A total of 21 exotic herbs were found,