Source : Webster's Revised Unabridged Dictionary (1913)

Disforest \Dis*for"est\, v. t.
   1. To disafforest. --Fuller.

   2. To clear or deprive of forests or trees.

Source : WordNet®

disforest
     v : remove the trees from; "The landscape was deforested by the
         enemy attacks" [syn: {deforest}, {disafforest}]