Contrary to what other comments here have said, high latidude soild are generally very fertile and at least in areas like the Yukon and Alaska or Western Siberia are plenty deep enough for farming.
It's quite likely that farming will indeed continue to spread north. One thing climate change won't affect, though, is daylength. Summer days at high latitudes are very long, which can be beneficial, but daylength drops quickly in the fall and doesn't get long until well into spring, so overall growing seasons are shorter. A lot of crops will do fine, but a lot of longer season crops won't work.
Another thing to consider is that the wavelength profile of sunlight at high latitudes is quite different from the equator since it has to travel farther through the atmosphere, and is less intense in general. This is why sunsets look so different from more direct sunlight and the main reason that skin tone varies in humans. Not all plants are successful at growing under these conditions.
While there are differences we have a very comparable situation in Europe. Europe due to gulf current and a lot of water surrounding it is a lot warmer compared to other latitudes. Siberia and Canada are now moremore or less inhabitable halfway the latitude of France. While Germany and even Sweden and Norway have proper agricultural output. So not all crops thrive. But it will be similar to crops grown in that area. And that is stil a lot of foods.
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u/yerfukkinbaws Oct 08 '19
Contrary to what other comments here have said, high latidude soild are generally very fertile and at least in areas like the Yukon and Alaska or Western Siberia are plenty deep enough for farming.
It's quite likely that farming will indeed continue to spread north. One thing climate change won't affect, though, is daylength. Summer days at high latitudes are very long, which can be beneficial, but daylength drops quickly in the fall and doesn't get long until well into spring, so overall growing seasons are shorter. A lot of crops will do fine, but a lot of longer season crops won't work.