Ancient Carbon Rising: Why the Congo Basin Peatlands Matter

The Congo Basin is home to one of the largest tropical peatland systems in the world. Peatlands are wetlands made up of partially decayed plants that have built up over thousands of years. Because this plant material doesn’t fully decompose in waterlogged conditions, it stores massive amounts of carbon underground. For decades, and in some cases, millennia, that carbon has remained locked away.

However, new research suggests that parts of the Congo Basin peatlands may be releasing ancient carbon back into the atmosphere. Changes in rainfall patterns, rising temperatures, and human activities such as logging and land clearing can dry out peat soils. When peat dries, it begins to break down more quickly, releasing carbon dioxide and methane, two powerful greenhouse gases.

This is concerning because peatlands act as natural carbon sinks. Even though they cover only a small percentage of the Earth’s surface, they store more carbon than all the world’s forests combined. If large portions of the Congo Basin peatlands begin releasing stored carbon, it could accelerate climate change rather than help slow it.

The Congo Basin is often called the “lungs of Africa” because of its vast rainforests. But beneath those forests lies an equally important climate system. Protecting these peatlands is not only about conserving biodiversity, it’s about preventing the release of carbon that has been stored safely underground for thousands of years.

Understanding what is happening in the Congo Basin highlights how interconnected Earth’s systems are. Climate change is not only about emissions today; it’s also about the stability of the natural systems that have quietly regulated our atmosphere for centuries.