There are “A-bombed trees” in Nagasaki city, and they are the precious war heritage. The first purpose of this study is to clarify the problems of conservation and the current state of bombed trees in Nagasaki. We investigated on abnormal tree form in Nagasaki, and compared with results of the survey in Hiroshima. The second purpose is to develop a method to search for undiscovered bombed trees in Nagasaki, and to search for suspected of bombed trees. Number of bombed trees in Nagasaki is less than in Hiroshima. We guess that due to the topographical characteristics of the two cities, the forests that exist within a radius of 4.0km were not entered into the recognition target. We superimposed the current aerial photograph, and photographs after bombing and before the bombing. To decrypts the green space that has continued from before the bombing to the current by visual observation, and extracted the location of the possibility of undiscovered bombed trees. And we investigated the location in Nagasaki. The results of the investigation, it became clear that the possibility of existence of undiscovered bomb trees is low in forest zone and high in shrines, temples, educational institutions and pubic facilities. Based on this investigation, we found the problem of the searching process and conservation of bombed trees and possibility of bombed trees in Nagasaki.
