When the forest is thinned, Harrington says, the fires will burn along the ground, consuming grass and some small brush and saplings, but spare the big trees, whose bark is inches thick.
(the forest; is thinned; ) (Harrington; says; ) (the fires; will burn; L:along the ground; T:When the forest is thinned)
the forest Harrington the fires
is thinned says will burn
L:along the ground T:When the forest is thinned