Australian rainforests emitting more CO2 than they absorb

A study published in the journal Nature has found that the Australian rainforests in Queensland are releasing more carbon than they absorb. While rainforests usually act as “carbon sinks,” absorbing more than they emit thanks to new trees offsetting emissions from dead ones, the study has found that the Australian rainforests are seeing more tree deaths than growths. This, it found, is due to extremely high temperatures.

The study’s lead author said that the findings have significant implications for global emissions reduction targets. These targets are based partly on how ecosystems can absorb carbon, including rainforests.

“Current models may overestimate the capacity of tropical forests to help offset fossil fuel emissions,” said Dr Hannah Carle of the Western Sydney University.

With a smaller number of new trees, trunks and branches of dead trees became carbon emitters instead of carbon absorbers, around 25 years ago.

“Forests help to curb the worst effects of climate change by absorbing some of the carbon dioxide released from burning fossil fuels, but our work shows this is under threat,” said Dr Carle.

An increase in trees dying in recent decades, she said, was thanks to climate change, causing more extreme temperatures, atmospheric dryness, and drought. Looking at 49 years of data from 20 forests in Queensland, the report also discovered a rise in the amount of cyclones, with their severity killing off more trees and presenting a challenge for new ones to grow.

Stay tuned to EyeOnLondon for the latest news and expert opinions.

Follow us on:

Subscribe to our YouTube channel for the latest videos and updates!

We value your thoughts! Share your feedback and help us make EyeOnLondon even better!