Crop harvests are not in all regions threatened by climate change . However, important agricultural countries will be affected. The global trade of cereals shows that most of the cereal is grown in areas threatened by climate change.
Wheat isn't grown on Greenland because it's much too cold there, but the amount of land planted with wheat is almost exactly equal in size to the surface area of this arctic island: 217 million hectares or 2.17 billion square meters. No other crop plant is grown across such a large area.
Wheat yields have continuously risen in the past decades, and in some production areas one hectare of land supplies enough flour to make 9,250 loaves of bread. Still, the rate of yield increase is out-stripped by the constantly rising demand. As a result, wheat is frequently in short supply on the global market.
The world's largest wheat producers are the European Union, China, India, Russia and the United States. The biggest exporters are the United States, Australia, Russia, Canada and the European Union while the main importers are Egypt, the European Union, Brazil, Indonesia, Algeria and Japan.