Mongol invasion's carbon footprint

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truthiness
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Mongol invasion's carbon footprint

Postby truthiness » Thu May 11, 2017 9:29 am

Here's a summary of the consensus:
http://www.livescience.com/11739-wars-p ... imate.html

Alternative explanations? This seems quite far fetched to me...

truthiness
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Re: Mongol invasion's carbon footprint

Postby truthiness » Mon May 22, 2017 11:24 am

I would have thought this has been visited before, but maybe not! Important to take a look at for consistency's sake.

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Nobrot
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Re: Mongol invasion's carbon footprint

Postby Nobrot » Mon May 22, 2017 11:31 am

I can't read the thing due to that large floating banner.

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Re: Mongol invasion's carbon footprint

Postby Poodle » Mon May 22, 2017 12:48 pm

truthiness wrote:... Alternative explanations? This seems quite far fetched to me...

Why? Killing or displacing a large number of people who were in the habit of deforestation would obviously have an effect. While you're walking a long distance or are dead, it's difficult to cut down trees.

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Gord
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Re: Mongol invasion's carbon footprint

Postby Gord » Wed May 24, 2017 10:53 am

truthiness wrote:Here's a summary of the consensus:
http://www.livescience.com/11739-wars-p ... imate.html

Alternative explanations? This seems quite far fetched to me...

Why?

Here's another link: https://carnegiescience.edu/news/war-pl ... o2-buildup

...Pongratz decided to see how much effect these events could have had on the overall trend of rising carbon dioxide levels. Working with colleagues at the Max Planck Institute for Meteorology in Germany and with global ecologist Ken Caldeira at Carnegie, she compiled a detailed reconstruction of global land cover over the time period from 800 AD to present and used a global climate-carbon cycle model to track the impact of land use changes on global climate. Pongratz was particularly interested in four major events in which large regions were depopulated: the Mongol invasions in Asia (1200-1380), the Black Death in Europe (1347-1400), the conquest of the Americas (1519-1700), and the Fall of the Ming Dynasty in China (1600-1650).

“We found that during the short events such as the Black Death and the Ming Dynasty collapse, the forest re-growth wasn’t enough to overcome the emissions from decaying material in the soil,” says Pongratz. “But during the longer-lasting ones like the Mongol invasion and the conquest of the Americas there was enough time for the forests to re-grow and absorb significant amounts of carbon.”

The global impact of forest re-growth in even the long-lasting events was diminished by the continued clearing of forests elsewhere in the world. But in the case of the Mongol invasions, which had the biggest impact of the four events studied, re-growth on depopulated lands stockpiled nearly 700 million tons of carbon absorbed from the atmosphere....

Seems plausible enough to me.
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Re: Mongol invasion's carbon footprint

Postby Gawdzilla Sama » Wed May 24, 2017 1:31 pm

Didn't the Amazon rainforest supply most of the oxygen on the planet until we started cutting it down?
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Re: Mongol invasion's carbon footprint

Postby Gord » Wed May 24, 2017 1:56 pm

I don't know, I get all my rainforest from Kijiji.
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