Buying marginal agricultural land in northern areas - a hedge against climate change?

[7Wannabe5]

I would note that there will likely be a good deal more fine-grain regional variation than is indicated on the world map. For instance, which side of a mountain range or river source. The desertification range is mostly based on models predicting further travel from equator in Western Hemisphere before evaporated water is dumped, so as average temperature goes up precipitation may increase a good deal in a region before decreasing. The pattern in the Southern Hemisphere will be different.