Afforestation is the process of planting trees in areas where there were previously no trees. This can be done for a variety of reasons, including to restore ecosystems, to improve air and water quality, and to combat climate change by sequestering carbon in trees. Afforestation can be used as a strategy to offset emissions from other sources.
For example, a company that produces a lot of greenhouse gas emissions may plant trees to absorb some of those emissions and reduce their overall carbon footprint. This can help the company to meet its carbon reduction targets and contribute to global efforts to combat climate change.