Scientists warn Australia’s rainforests are releasing more CO₂ than they absorb

Scientists warn Australia’s rainforests are releasing more co₂ than they absorb (Image: Canva)

Australia’s tropical rainforests are emitting more carbon than absorbing. This reversal has shocked scientists studying long-term forest carbon trends. Previously, these forests acted as a natural carbon dioxide sink.

The new findings indicate a dangerous shift in ecosystem balance. Researchers warn this trend may worsen climate change impacts globally.

Where and How Researchers Observed Changes?

The study focused on Queensland’s lush rainforest regions across decades. Scientists tracked tree growth, mortality and carbon flux accurately over time. They combined satellite data with on-ground forest monitoring systems.

This approach revealed that carbon emissions now exceed forest absorption. Climate extremes and human impacts intensified these emissions in recent years.

Why Forests Are Losing Their Carbon Balance?

Increased tree death from droughts and extreme heat contributes significantly. Older trees release stored carbon when they decay naturally or quickly. Fewer new trees grow to offset carbon losses effectively in forests.

Climate-induced stress accelerates decomposition, reducing forest's natural CO₂ storage. These factors combined are pushing rainforests from sink to source.

Implications for Climate Change

Rainforests were once considered crucial in limiting global warming effects. Their reduced carbon uptake challenges assumptions behind international climate targets. Carbon budgets may need urgent reassessment in light of new evidence. Failure to account for this shift could undermine emission reduction plans. Protecting rainforest health is now critical for global carbon management.

What Can Be Done Next?

Researchers call for better monitoring and conservation strategies immediately. Reforestation and reducing human pressures may help restore carbon balance. Understanding climate impacts on forests is vital for future modelling.

Global cooperation is essential to protect vulnerable tropical rainforest ecosystems. Timely action could prevent further carbon emissions from these forests.