Growth or re-emergence of the native vegetation in a place after it has been destroyed of degraded, resulting form protection of area from biotic interference. Regeneration may proceed from stumps, cut, bushes, grazed, from root suckers or from seeds
Siyag, P.R., 1998

Natural succession of forest plantations on temporarily unstocked lands that are considered as forest
FAO, 2001

Renewal of trees by self-sown seeds or natural vegetative means (Ford-Robinson, cited in Wadsworth 1997)
ITTO, 2002