; (II) requires reforestation to meet the objectives of an applicable land management plan; and (III) is unlikely to experience natural regeneration without assistance. (iii) Reforestation The term reforestation means the act of renewing tree cover by establishing young trees through— (I) natural regeneration; (II) natural regeneration with site preparation; or (III) planting direct seeding, taking into consideration species composition and resilience. (iv) Unplanned event (I) In general The term unplanned event means any unplanned disturbance that— (aa) disrupts ecosystem or forest structure or composition; or (bb) changes resources, substrate availability, or the physical environment. (II) Inclusions The term unplanned event may include— (aa) a wildfire; (bb) an infestation of insects or disease; (cc) a weather event; and (dd) animal damage. (v) Unstocked The term unstocked , with respect to forest land, means that a percentage of forested land area of the forest land fails to achieve compliance with a stocking level required under an applicable land management plan. (B) Requirement Each reforestation activity under this section shall be carried out in accordance with applicable Forest Service management practices and definitions, including those contained in— (i) the amendment numbered 2400–2014–1 to chapter 2470 (relating to silvicultural practices) of the Forest Service document numbered FSM 2400 (relating to forest management) (or a successor amendment or manual); and (ii) section 219.19 of title 36, Code of Federal Regulations (or a successor regulation). (C) Reforestation priority (i) In general In carrying out this subsection, the Secretary shall give priority to projects on the priority list described in clause (ii). (ii) Priority list (I) In general The Chief of the Forest Service shall, based on recommendations from regional foresters, create a priority list of reforestation projects that— (aa) primarily take place on priority land; (bb) promote effective reforestation following unplanned events