Two new analyses detail how land clearing and degradation are pushing the Amazon rainforest toward a tipping point of no longer being a forest that supports an abundance of life and buffers Earth from climate change.
humans are causing changes to the Amazonian ecosystem in a matter of decades or centuries, as opposed to millions to tens of millions of years for natural processes.published today looked at the lesser-known problem of land degradation in the Amazon due to logging, fires, extreme droughts and changes at the edges of the forest caused by the habitat being fragmented.
They also found the carbon lost from the forest due to degradation is on par with that due to deforestation — and degradation can lead to as much loss of the forest's biodiversity as deforestation.suggest "degradation will continue to be a major source of emissions in the region, regardless of what happens with deforestation," says study co-author David Lapola, a research scientist at the University of Campinas in Brazil.
But the extreme droughts are caused by "global climate change, which is not only for us to solve," he says.Passing the forest's tipping point would be devastating for the forest's biodiversity and for the Indigenous people that live there.
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