2020 Volume 54 Issue 1 Pages 45-54
Naoki Suematsu, Tetsuji Ota, Katsuto Shimizu, Keiko Fukumoto, Nobuya Mizoue, Akio Inoue, Haruka Kitazato,Hideo Kusano, Hirofumi Kai and Yasushi Omasa: The influence of sampling grid resolution and understory on forest structure estimation from terrestrial laser scanning. Jpn. J. For. Plann. 54: 45~54, 2020 This study investigated the effects of sampling grid resolution and understory on tree stem detection and diameter at breast height（DBH）, tree height,and stem volume estimation from terrestrial laser scanning（TLS）. We established six rectangular plots. Within three plots,we removed the understory before scanning. The TLS data were acquired using a 5 m sampling grid. Four sampling-grid resolutions were tested by changing the combinations of TLS data used for registration of scans. The results showed that the understory and/or a coarser grid resolution negatively affected the registration of TLS, detection of stems, and estimation of DBH, tree height, and volume.
