Abstract
Preventing the spread of fires is an important potential function of trees. In this investigation, the effect of trees near flame to reduce the received heat radiation behind the trees was inspected experimentally. The measured radiation behind trees was deducted from 10.1 % to 97.8 % depending on the increase of the coverage ratio of tree crowns. In both cases of when trees didn't catch fire and when trees caught fire by the flame, the effect to reduce the received heat radiation increased by the existence of trees. The result of the experimental investigation indicated that, at the spaces which become the evacuation routs or evacuation places at the event of disaster, it is important to make the planning of securing open spaces to avoid the ignition and burning of trees, as well as considering to select suitable species of trees and to arrange trees in a good way.
