Aridity →

Aridity: Understanding the Long-Term State of Water Scarcity

: Extreme dryness with almost no vegetation; covers 4.2% of global land. aridity

: Transition zones with enough moisture for grass and some crops; covers 12.2% of global land. Drivers and Ecological Impact Aridity: Understanding the Long-Term State of Water Scarcity

Regions are categorized based on their AI values to determine the severity of water limitation. According to the Food and Agriculture Organization (FAO) , drylands cover roughly 41% of the Earth's land surface and are classified into three primary zones: covers 14.6% of global land.

: Limited rainfall and specialized vegetation; covers 14.6% of global land.