Tableland located at the east fringe of Shimosueyoshi Tableland has ample forestcover on it's slopes， trees in those areas had been used for firewood and charcoaluntil about a half century ago， but they have been out of demand since then. Sosome trees have grown to large sized， heightening the risk of possible surface slopefailure. Trees larger than 40cm in DBH were plotted on maps and checked forspecies name， DBH and gradient of the slope on which they stand. Results showthat most of the larger-diameter trees (larger than 70cm in DBH) tend to standnear the highest part of slopes. The most numerous subgenus of this category isCerasus， a taxon containing cherry blossoms trees.