Afforestation and reforestation are defined
by the UNFCCC as direct humaninduced
conversion of non-forested land
to forested land through planting, seeding
and/or the human-induced promotion
of natural seed sources. Afforestation
can take place on land that has not
been covered by forest for at least
50 years. Reforestation can occur on
land that was historically forested, but
was subject to another land use.