[60-3] Arable Land / 可耕地, 2011
Most land on earth is unsuitable for growing crops, being either too wet, too dry, too shallow, lying under permanent frost, or suffering from chemical problems. Only about 20% of the world's 150 million square km of land is arable, most of which is located near the largest rivers.
地球上大部分的土地是不適合栽種農作物的，不是太濕潤，便是太乾、太淺，有些則是位於永久性森林之下，或是受到化學汙染。地球1.5億平方公里的陸地僅有兩成是適於耕種的，這些土地大部分都鄰近大型河川。
