The process of removing carbon from the atmosphere and depositing it in a reservoir.
Part of this picture is soil erosion, which removes carbon from the soil and deposits it elsewhere.
Of course, there are also ways to remove carbon from the atmosphere.
Some of these chemical species are consumed by photosynthestic organisms, that remove carbon from the cycle.
Other human-caused changes to the environment change ecosystems' productivity and thus their ability to remove carbon from the atmosphere.
Any process that removes carbon from the atmosphere can act as a carbon sink.
These forests are imperative for producing oxygen through photosynthesis and removing carbon in the atmosphere.
If the goal is to remove carbon from the atmosphere wouldn't just cutting down trees and burying them be more effective?
Only when actively growing can a tree or forest remove carbon over an annual or longer timeframe.
As trees grow, they remove carbon from the atmosphere.