I would never purchase a piece of property with a conservation easement.
Exactly. A Conservation Easement, in my state, turns over most all property rights to the State....for ever. The property is no longer yours.
A piece adjoining ours was turned over to the State with a "Conservation Easement" a couple of years ago. The State put up signs stating: No mowing, cutting, chemical placement (weed and bug control), building, or filling allowed. If I were the owner, I would consider starting a hog farm, since that's not specifically disallowed.