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Table 2 Desertification wide area map classification criteria (After Dregne 1986).

From: Post-Wildland Fire Desertification: Can Rehabilitation Treatments Make a Difference?

Map classification Area in desertification categories (%)
Slight >50 slight
<20 severe
<10 very severe
Moderate <50 slight
<30 severe and very severe
Severe >30 severe category
0 to 30 very severe
Very severe >30 very severe