Photosynthesis and Carbon Sequestration

The chemical process by which trees capture atmospheric carbon dioxide, converting it into biomass and locking away carbon for centuries.

Photosynthesis and carbon sequestration represent the primary biological engine through which forest ecosystems interact with and regulate the global atmosphere, making woodlands the world's most critical terrestrial carbon sinks.

Through the process of photosynthesis, trees capture solar energy using chlorophyll in their leaves to convert atmospheric carbon dioxide and water absorbed by the roots into glucose, releasing oxygen back into the atmosphere as a vital byproduct. The glucose is then transformed into complex cellulose and lignin, forming the physical biomass of the tree's trunk, branches, and root systems. Carbon sequestration is the long-term storage of this captured carbon within the forest ecosystem. As a tree grows, it locks away large volumes of carbon for decades, centuries, or even millennia. Furthermore, when leaves fall and roots decompose, a significant portion of this organic carbon becomes incorporated into the forest soil, creating deep, stable underground carbon stores.

Protecting and expanding healthy forest systems is therefore a key global strategy for climate change mitigation, as deforestation actively releases this stored carbon back into the atmosphere, compounding the greenhouse effect.