Here are some other options, depending on the context:
* Conservationist: This adjective describes something related to the practice of conservation, or someone who is involved in conservation.
* Conservatory: This adjective describes something related to the preservation of natural resources.
* Conservative: While this adjective usually refers to political ideology, it can also mean "tending to preserve existing conditions."
The best choice will depend on the specific meaning you want to convey.
