Carbon exchange refers to the process by which carbon dioxide is exchanged between the atmosphere and various carbon reservoirs, such as vegetation, oceans, and soil. This exchange plays a critical role in regulating the Earth's climate and is an important component of the carbon cycle. Researchers in this area study the rates and mechanisms of carbon exchange between different reservoirs, how human activities such as deforestation and fossil fuel combustion are impacting this exchange, and potential strategies for mitigating the effects of climate change by managing carbon stocks and flows. This research is crucial for understanding the carbon cycle and developing effective policies for reducing greenhouse gas emissions and combating climate change.