Dead Woods Are Releasing More Carbon Yearly Than All Fossil Fuel Emissions Combined

According to a new study by an international team of experts, decomposing wood releases roughly 10.9 gigatons of carbon per year worldwide. This equates to around 115 percent of fossil fuel emissions

Living trees absorb a significant quantity of carbon dioxide from the atmosphere and serve a critical role in climate protection.

However, little is known about dead trees' function in the global carbon cycle. One of the essential processes in forests is the decay of wood and the recycling of its nutrients.

Researchers lay out wood from more than 140 tree species in 55 forest areas across six continents to analyze the impact of climate on decomposition rate.

Mesh cages were used to contain half of the wood. These cages kept insects from the decomposition process and allowed researchers to assess their contribution to wood breakdown.

On six continents, the global research initiative covered 55 forest areas. The researchers looked at wood from over 140 different tree species to see how climate affects the pace of disintegration.

Professor Lindenmayer explained, "Half of the wood was placed in mesh cages that kept insects out, allowing us to evaluate their contribution."

"We discovered that the climate greatly influences both the pace of decomposition and the contribution of insects and that both will climb as temperatures rise. In warmer climates, higher precipitation speeds up decomposition, while it slows it down."

Due to their high wood mass and rapid decomposition rates, tropical forests provide 93 percent of all carbon released by deadwood.

Dr. Sebastian Seibold of the Technical University of Munich led the research.

"We can witness some substantial decreases in biodiversity and changes in climate at a period of global change," Dr. Seibold added.

"This research has shown that both climate change and insect extinction have the potential to influence wood breakdown, and so carbon and nutrient cycles around the world."

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