Abstract
Deciduous trees near light do not lose thier leaves until late in autumn. But, few papers are concerned in the subject of the effect of street lighting on the time of leaf fall. So we investigated the effect on 7 species of roadside trees in Tokyo metropolitan area and made an experiment on 2 species saplings. The results of this studies are as follows;the effect of the light on the leaf fall of roadside trees depends on the species. And Extent of the effect depends on dgree of the light.
