The term for widespread planting of a single commercially important species is:

Enrichment plantation is the process in which particular species of trees which are commercially profitable are planted after the removal of other species in the area. This causes the destruction of the natural forest. For instance, teak trees have been planted in South India after cutting down the natural forests.

Enrichment planting can be successfully used to increase the value of secondary forests and prevent their conversion to other land uses, thus reducing deforestation.