Parameter Tree:
EARTH SCIENCE > BIOSPHERE > VEGETATION > AFFORESTATION/REFORESTATION

Definition:
Afforestation is the establishment of trees on an area that has lacked forest
cover for a very long time or has never been forested. Reforestation is the
natural or artificial restocking (i.e., planting, seeding) of an area with
forest trees. Also called forest regeneration.


Reference:
From the Glossary of Forestry Terms, Ministry of Forests, Government of British
Columbia, Canada
http://www.for.gov.bc.ca/hfd/library/documents/glossary/