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Soil Moisture Regimes
soil moisture regimes
6
Environmental Studies
Undergraduate 3
09/23/2015
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Term
aridic
 Definition
arid; not moist for +90 consec. days
Term
ustic
 Definition
semi arid; dry <45 consec. days in summer
Term
xeric
 Definition
mediterranean; semi arid; dry >45 consec. days after summer solstice; moist >45 days after winter solstice
Term
udic
 Definition
humid; dry <90 days cum. days and <45 days consec. in summer
Term
perudic
 Definition
ppt exceeds evapotrans. in all months but soil is not saturated for long periods
Term
aquic
 Definition
soil saturated long enough for anaerobic conditions; redox.
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