2014 Volume 40 Issue 1 Pages 43-48
To reduce the salt damages rendered by Tsunami on coastal forests, evaluation of salt tolerance for afforestation plants and selection of salt tolerant plants are essential. In this study, soil of potted Bambusa multiplex, which is native to tropical Asia, were flooded by sea water for 0hr, 24hr, 48hr and 72hr, and changes in plant survival, leaf color, leaf number and Fv/Fm ratio were investigated. The results showed that damages by sea water flooding were increased with increasing flooding period. However, no dead plants were observed in 24hr and 48hr sea water flooding. Leaf color, leaf number and Fv/Fm ratio were damaged by sea water flooding, but recovered finally except for 72hr sea water flooding. Four plants out of five plants survived even in 72hr sea water flooding. These results indicated that B. multiplex was tolerant to short term sea water flooding. It was estimated that B. multiplex was suitable plant for afforestation in coastal areas and around river mouth, where affected by sea water, in south-western part of Japan.
