I think I would describe myself as a conservationist rather than an environmentalist. Conservation suggests an active human role in caring for our planet - the role God gave us in the Garden of Eden when he told us to name the animals and care for the garden. Environmentalism suggest a religious or political "ism" a worship of nature itself rather than nature's Creator.
Ventriloquist Jeff Dunham has a bit in his Achmed the Terrorist routine where he asks Achmed what he does.
Achmed replies, "I'm a terrorist."
"What kind of terrorist?" Dunham asks.
"A terrifying terrorist!" says Achmed.
Well I'm a conservationist.
"What kind of conservationist?" you ask.
"A conservative conservationist!"
I'm just saying. You may now talk amongst yourselves....