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Story perspectives

Australia's Rainforests Shift: From Carbon Sink to Source

10/21/2025

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Summary

Story summary

Australia’s tropical rainforests have shifted from a net carbon sink to a net carbon source, based on 1971–2019 data.
The change is linked to increased tree mortality from climate-related stresses such as extreme temperatures and drought.
Tree deaths outpace new growth, challenging the view that forests will continue to absorb atmospheric carbon.
Although some canopies appear greener from higher CO2, woody biomass storage has not increased.

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Story summary

Australia’s tropical rainforests have shifted from a net carbon sink to a net carbon source, based on 1971–2019 data.
The change is linked to increased tree mortality from climate-related stresses such as extreme temperatures and drought.
Tree deaths outpace new growth, challenging the view that forests will continue to absorb atmospheric carbon.
Although some canopies appear greener from higher CO2, woody biomass storage has not increased.