As used in this part, unless the context otherwise requires:
(1) “Area” means an area of land or water, or both, whether in public or private ownership, which has scenic, natural, or scientific values;
(2) “Commissioner” means the commissioner of environment and conservation;
(3) “Department” means the department of environment and conservation;
(4) “Local government” means the government of a county or municipality; and
(5) “System” means collectively the areas, whether scenic, natural or scientific, which will be placed in this part and which shall receive the preservation and protection that is provided by this part.