Naturalist is my preference.

Environmentalist has liberal undertones by today's definition with an eye on limiting energy consumption. Conservation, to me, is trying to preserve a desired state of nature.

Naturalist is observation of the world. How it changes, interactions between the components, and the greatest honor, imitation. We seek to imitate natural processes when producing goods. Blend our activities with what this landscape would look like with little human influence. Human activity seeking to adapt to nature, not overpowering her design for our own person gain.