I was raised Catholic, in a Catholic country and I don't every recall being taught environment stewardship as being a biblical mandate. All that came from my parents, from common sense, from a love of nature and from 80s kids TV.

I don't want to get caught up in a religious argument, but I think its far more likely that people attribute a particular view to their religious beliefs as a way of validating them than they believe the environment is precious solely because the bible told them.