2021 Volume 47 Issue 1 Pages 27-32
We analyzed the occurrences and forest environment of drought damage of bare-root seedlings in Hinoki (Chamaecyparis obtusa Sieb. et Zucc.) plantation of Utsunomiya University Forest. Additionally, we evaluated drought tolerance due to the difference between seedling types. The mortality rate was 36.0 % and the number of dead trees was 1,012 trees. 2018 that the drought damage occurred was the year of unusual weather with low precipitation and high mean temperature, and the occurrence of drought damage was thought to be caused by long non-rainfall period and high temperature in July. High mortality rate was observed in the ridge top or steep slope with angle more than 30 degrees and thin A layer soil with low humus. While, the containerized seedlings of Hinoki had higher tolerance to drought conditions.
