It shall be the duty of the Department of Conservation and Natural Resources as to all unused lands owned absolutely by the state to determine which of said lands are most suitable to be devoted to forest culture and to make a list of such lands and file the same in the office of the Department of Finance, and the lands, as shown on such list, shall thereafter, at the direction of the Governor, be devoted to forest culture or to the purposes of state parks under the administration of the State Forestry Commission or the Division of Parks, Department of Conservation and Natural Resources, as state forests or state parks.