A land trust is a non-profit organization that works to conserve or preserve land through land transactions, primarily the purchase or acceptance of donations of land or conservation easements. Most land trusts are registered as charitable corporations. Land trusts whose interests are local, or restricted to one state or country, should be listed in the appropriate Regional category rather than here.
 
 
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With offices in Fayetteville, North Carolina and Pasadena, California, the Habitat Trust is engaged in real property acquisitions through acceptance of monetary donations, contributions of land, and direct purchase of land deemed to be vital habitat lands and waters by its stakeholders. Its site identifies its sanctuaries, sage, desert, canyon, forest and wetlands.
http://www.thehabitattrust.org/
The Land Trust Alliance seeks to unite and promote the establishment of organizations in local communities working to preserve natural areas through land acquisition, conservation easements and other methods. Its site offers information about land conservation, its policies for action, and other educational resources.
http://www.lta.org/
The World Land Trust is a non-profit organization committed to the preservation and protection of the world's most biologically important and threatened habitats.
http://www.worldlandtrust.org/