ha Ishiguri et al. ha ha ha m km mm cm ha ha ha ha ha ha Mahoko Noguchi, Satoru Wada 2017 Stand Structure and Growth of a Young Sugi Cryptomeria japonica Plantation under Different Planting Densities in Akita, Japan. J Jpn For Soc 99: 41 45 To clarify the effects of reduced planting density on stand structure and growth of sugi Cryptomeria japonica plantation, we examined stands planted years ago at densities of , , and trees ha in Akita, Japan. Sugi trees in a trees ha stand had significantly

more »

... arger diameter and diameter growth than those planted at other densities. Nevertheless, the larger tree height in this stand, along with the comparable height: diameter ratio and height to the lowest branch among the three planting densities, suggested a limited effect of competition among planted sugi trees. The proportion of sugi trees with defects, such as bent or forked stems, was higher in the stands planted at a lower planting density. Naturally regenerated trees other than sugi exceeded of the total tree density in and trees ha stands. Stem density above median sugi height in these trees was higher in these stands than in the trees ha stand, suggesting that trees in these stands suppress sugi trees and cause large variations in sugi heights.