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Evaluating the US Soil Taxonomy Soil Moisture Regimes

Evaluating the US Soil Taxonomy Soil Moisture Regimes

Evaluating the US Soil Taxonomy Soil Moisture Regimes

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Mean annual soil<br />

temperature (C)<br />

< 8° Cryic (colder<br />

summers)<br />

< 8° Frigid (warmer<br />

summers)<br />

Mean summer minus mean winter<br />

soil temperature (C)<br />

>5° 22° Hyper<strong>the</strong>rmic Isohyper<strong>the</strong>rmic<br />

Mean annual soil temperature is about 1° C higher than mean annual air<br />

temperature.

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