ARIDIC

arid index 干燥指数

A soil moisture regime that has no moisture available for plants for more than half the cumulative time that the soil temperature at 19.7 inches (50 centimeters) is above 5C (41F) and has no period as long as 90 consecutive days when there is moisture for plants while the soil temperature at 50 centimeters is continuously above 8C (46.4F).