Wetlands play a significant role in climate change mitigation by acting as carbon sinks. Due to their wet and oxygen-free condition, organic matter slowly decays in wetland ecosystems sequestering carbon that would otherwise be released. Through this process, carbon can be stored for thousands or millions of years. According to many studies, the total amount of carbon stored in wetlands around the world is similar to the amount of carbon currently in our atmosphere.
Links to more information on carbon sequestration in wetlands: