tree-planting program; afforestation project
Refers to organized efforts, often by governments or NGOs, to plant trees for environmental or commercial purposes.
A large-scale tree-planting program is being carried out in this region.
植林 is the general act of planting trees, while 植林事業 specifically refers to an organized program or project.
Compound of 植林 (tree planting) and 事業 (project, enterprise).