Reestablishment of a tree crop on forested land
USDA Forest Service, 1997

Artificial establishment of forest on lands which carried forest before.
FAO, 1998

Establishing cover of trees, shrubs and grasses on a tract of land that had a forest cover on it until fifty years ago or later. Often the same species are used that had existed earlier.
Siyag, P.R., 1998

The re-establishment of forest formations after a temporary condition with less than 10% canopy cover due to human-induced or natural perturbations.
FAO, 2000

The re-establishment of trees and understorey plants at a site previously occupied by forest cover
Gilmour, D.A. et al., 2000

Establishment of forest plantations on temporarily unstocked lands that are considered as forest.
FAO, 2001

The re-growth of forest after a temporary (<10 years) condition with less than 10% canopy cover due to human-induced or natural perturbations (FAO 2000).
UNEP/CBD/SBSTTA, 2001

The direct human-induced conversion of non-forested land to forested land through planting, seeding and/or the human-induced promotion of natural seed sources, on land that was forested but that has been converted to non-forested land. For the first commitment period, reforestation activities will be limited to reforestation occurring on those lands that did not contain forest on 31 December 1989.
UNFCCC, 2001

The re-establishment of trees and understorey plants at a site immediately after the removal of natural forest cover
ITTO, 2002

The act of planting trees on bare or open land which is used to be covered with forest growth
PEENRA website

Ways of re-establishing forest cover.
UNEP World Conservation Monitoring Center website