Abstract
We set a study plot with 20m×16m in size and measured the DBH and heights of all individuals with more than 1.3m high. We also measured the relative light intensity (RLI) before and after leaf fall. As results 860 individuals belonging to 44 species were observed. The basal area at 1.3m high (BA) was 35.2m^2/ha and density was 26,875ind./ha. The mean annual increment of BA was 1.09m^2/ha/yr (sugi) and 0.59 (broadleaved). RLI was 1.9-18% before leaf fall and 9-45% after it. According to RLI distribution, the crown of this stand was patchily occupied by hardwood. Since BA increment of hardwood species was not so small, it is worthwhile to make coniferous plantations under snowy condition like the Hikimi Forest change into mixed forests.
