Re:Desertification in Romania (2020)
by syrrim on Friday June 11, 2021 @11:36PM
(#27481290)
I believe it had to do with the way they irrigated. They would flood their fields, which would leave sediment from the river as the water evaporated. The sediment contained salt, which slowly accumulated, and made the fields infertile.
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the last ice age only ended about 12,000 years ago[0]. The fertile crescent and ancient egypt's golden age was half way from then to today & the climate was a lot cooler overall.
Re:Desertification in Romania (2020)
by Ericson2314 on Saturday June 12, 2021 @09:13AM
(#27484262)
But how does that square with things like https://en.wikipedia.org/wiki/Roman_Warm_Period ?
This was thousands of years later (significantly closer to our time than it was to the ancient civilizations of the fertile crescent - remember that the pyramids were older to Cleopatra than she is to us). Climate isn't linear and that was one of several fluctuations, but 5000-6000 years ago it was cooler in that area than today.
Re:Desertification in Romania (2020)
by Ericson2314 on Sunday June 13, 2021 @10:37AM
(#27492993)
I agree with the chronology. But what is your claim on the fertility of the region in classical antiquity? Remember that Egypt was considered a "breadbasket", and the eastern portion was the richer one in general.
I'm not an expert on the matter. I just read about the fertile crescent & how at its peak it wasn't a desert like it is today and that temperatures and sea-level were both lower than today. For example the persian gulf (today underwater) "was an extensive region of river valley and wetlands" https://en.wikipedia.org/wiki/Persian_Gulf#History when the ancient civilisation of Sumar developed there.
I have no knowledge about the eastern portion of Egypt (Sinai?) being richer than the western one, afaik the wealth of Egypt was always centered around the nile and nile delta (even today). That's probably what the breadbasket refers to.
I first heard it in Short History of Progress. https://www.youtube.com/watch?v=AsPMaGdg_38
Wheat yields progressively fell as salt accumulated in the ground. They switched to barley until that crop failed too.
According to the book, almost all ancient agriculture was unsustainable. If not because of the irrigation, it was because plowing caused too much soil erosion. The only places that could get away with it long-term were Egypt and China, because of the flooding and lime replenished the soil.
That's the version told in the "Fall of Civilisations" podcast <https://fallofcivilizationspodcast.com/> (highly recommended).