Terrestrial laser scans - Riegl VZ400, individual tree point clouds and cylinder models, Rushworth Forest

Terrestrial laser scans were acquired in native Eucalypt Open Forest (dry sclerophyll Box-Ironbark forest) in Victoria, Australia. Two plots (RUSH06 and RUSH07) with a 40 m radius were established in Rushworth forest and partially harvested in May 2012 to acquire accurate estimates of above-ground biomass. The main tree species in these plots were Eucalyptus leucoxylon, Eucalyptus microcarpa and Eucalyptus tricarpa. Single trees were extracted from the TLS data and quantitative structure models were used to estimate the tree volume directly from the point cloud data. Above-ground biomass (AGB) was inferred from the derived volumes and basic wood density information, and compared with estimates of above-ground biomass derived from allometric equations and destructive sampling. See Calders et al. (2014) and Murphy et al. (2014) for further information.

本数据集的地面激光扫描（Terrestrial Laser Scan, TLS）数据采集于澳大利亚维多利亚州的原生桉属开阔林（干旱硬叶箱型-铁树皮林，dry sclerophyll Box-Ironbark forest）。研究人员在拉什沃思林区内设置了两个半径为40米的样地（RUSH06与RUSH07），并于2012年5月对样地进行部分采伐，以获取精准的地上生物量估算数据。该样地内的主要树种为Eucalyptus leucoxylon、Eucalyptus microcarpa及Eucalyptus tricarpa。研究人员从地面激光扫描点云数据中提取单木信息，并采用定量结构模型直接从点云数据估算单木材积。地上生物量（Above-ground Biomass, AGB）通过推导得到的材积与木材基本密度信息推算得出，并与通过异速生长方程和破坏性采样得到的地上生物量估算结果进行对比。详细信息可参考Calders等人（2014）与Murphy等人（2014）的相关研究。