As used in this part, the term:
(1) “Forest fire” means any fire burning uncontrolled on any forest land covered wholly or in part by timber, brush, grass, or other flammable material.
(2) “Forest lands” means all lands which are situated outside of corporate limits and which have enough forest growth, either standing or down, or have sufficient flammable debris or grass, to constitute, in the judgment of the State Forestry Commission, a menace to such lands or adjoining lands.