Size, species, presence/absence of damages by ambrosia beetle (Platypus quercivorus) and some relevant information for the trees sampled in 11 plots established in an evergreen forest dominated by ubame oak (Quercus phillyraeoides)

This is the surveyed data about the damage of the oak (Quercus phillyraeoides) and other tree species caused by attacking of the beetle in Muroto city, Kochi Prefecture, where is the main production area of the charcoal. A total of 560 individuals of Quercus phillyraeoides were sampled in 11 circular plots (each 0.02 ha). "Presence/absence of damages by ambrosia beetle" was checked for each individual. "Mean diameter in a plot" represents the mean diameter of stems of Q. phillyraeoides within a plot. "Mixture ratio" represents the proportion of other species than Q. phillyraeoides in terms of stem number within a plot.本数据集为高知县室户市（该市为木炭主产区）内由食菌小蠹（ambrosia beetle）侵袭引发的乌冈栎（Quercus phillyraeoides）及其他林木受损情况的调查数据。本次研究共设置11个圆形样地（单个样地面积为0.02 ha），并在其中采集了560株乌冈栎样本。针对每株样本，均开展了“食菌小蠹侵害发生情况”的调查。其中，“样地平均直径”指单个样地内乌冈栎植株的茎干平均直径；“混交比例”指单个样地内非乌冈栎树种的株数占该样地总株数的比例。