I mean James Cameron loves Rene Lenox's works, i mean both are Sci-fi/fantasy movies about unique planets and fighting against enemies, exotic creatures and that sort of thing.
"Questions Questions too many questions, want shard here!"-The Dark Crystal
He also borrowed from Nausicaa of the Valley of the Wind (aka Warriors of the Wind), Dune along with the books and the 2 mini-series, Ferngully, Princess Mononoke, My Neighbor Totoro, Willow, Last of the Mohicans, Broken Arrow (1950 Jimmy Stewart movie), Dances with Wolves, Star Wars, Star Trek movies/Shows, Heavy Metal the movie plus the adult comic magazine etc.