Genocide of Native Americans helped cause Little Ice Age: scientists
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Published in Quaternary Science Reviews, the study found that much of the land previously cultivated by indigenous civilisations would have fallen into disuse, becoming swallowed up by forest and grassland.
It estimates that an area of 56 million hectares, roughly the size of modern-day France, would have been “rewilded” in this way.
The scale of the change is believed to have drawn an amount of carbon dioxide from the atmosphere equivalent to two years of fossil fuel emissions at the present rate.
Professor Mark Maslin, from UCL’s School of Geography, said: “There is a marked cooling around that time which is called the Little Ice Age, and what’s interesting is that we can see natural processes giving a bit of cooling, but to actually get the full cooling double the natural processes you have to have this genocide generated drop in carbon dioxide.”
The research team examined historical population data, using it to model the reduction of land devoted to agriculture.
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