Conservation Easement
Article from Wikipedia: https://en.wikipedia.org/wiki/Conservation_easement In the United States, a conservation easement (also called conservation covenant, conservation restriction or conservation servitude) is a power invested in a qualified private land conservation organization (often called a “land trust“) or government (municipal, county, state or federal) to constrain, as to a specified land area, the exercise of rights otherwise held by a landowner so as to achieve certain conservation […]