Is the chemical composition of soil changing with climate change?

Question

There seems to be talk of an agricultural crisis looming in the coming years which will lead to a food shortage. Already the price of wheat has escalated. Is the percentage of arable land declining with climate change? And if so, is there any remedy to this (regarding soil science)?

Answer 1

No, if anything the amount of arable land would increase with an increase in temperature. Look back at the warming period which allowed the Vikings to farm in Greenland.  Warmer temperatures would make colder areas available to farming and would not effect areas already being farmed.  The current increase in the price of wheat is caused by the increase in fuel prices among other things.

Answer 2

The main reason for the concern about agricultural change is that global warming predicts that the rain bands will change lattitudes and cause crop failure in under developed countries that depend on natural moonsoon cycle for their crops. Nations that use irrigation for agriculture should not be as affected by global warming. But I do not believe that the chemical composition of the soil is predicted to change because of increasing CO2 levels.