Unless otherwise agreed in writing, the provisions of §§ 18-11-304 and 18-11-305 are applicable to the duties and liability of:
(1) An owner of land leased to the state or a political subdivision of the state for recreational purposes;
(2) An owner of an interest in the real property burdened by a conservation easement as defined in § 15-20-402; or
(3) A holder of a conservation easement as defined in § 15-20-402.