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Soil Moisture Regime

Soils

TermDefinition
Aridic Regime aka Torric never moist for 90 consecutive days dry > 50% of thet ime
Ustic Regime soils dry for 90+ consecutive days depending on temp 1. soil is moist for at least 180 cumulative or 90 consecutive days 2. not dry in all parts > 50% of the time does not meet xeric moisture regime requirements
Xeric Regime moist winters and dry summers ie) Mediterranean climates
Udic Regime humid climates where summer precipitation and stored moisture > evapotransporation not dry for 90 consecutive days
Perudic Regime all months precipitation > evapotransportation ie) rainforests, jungles
Aquic Regime soils saturated for at least a few days per year; redoxymorphic features mottles due to reducing conditions = hydric soils
Created by: rockpockets
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