Yes, yes it is
Credits are taken from Sugi's website:
http://www.masamichi-sugi.net/discog.../others12.html
I believe there's one mistake though: track 2 has no lyrics, none of the tracks have lyrics in fact.
Great tunes, definitely good enough for Inoue's "Iblard" world.
another edit - This album here is for the artbook "The Natural History of Iblard", can be found on Inoue's site (same art for the cover):
http://iblard.com/english/goods.html
Inoue created the world of "Iblard", so the Iblard for the PlayStation game:
http://vgmdb.net/album/11050
and for Ghibli animation:
http://vgmdb.net/album/28795
are the same.