森林工程2025，Vol.41Issue(1)：162-173,12.DOI:10.7525/j.issn.1006-8023.2025.01.013
基于地基激光雷达人工蒙古栎削度-二元材积方程的构建
Construction of a Taper-Binary Volume Equation for Plantation Mongolian Oak Based on TLS Data
摘要
Abstract
To improve the accuracy of non-destructive estimation of volume of trees with complex trunk shapes,this study uses terrestrial laser scanning(TLS)point cloud data and developes a taper-binary volume equation based on the optimal taper model for plantation Mongolian oak.The study was conducted in a Mongolian oak plantation located at the Urban Forestry Demonstration Base in Harbin.Complete point cloud data were collected via TLS,and tree trunk structural parameters were extracted after processes such as clipping,elevation normalization,filtering,individual tree segmentation,and leaf-branch separation.Based on the trunk shape char-acteristics of Mongolian oak,six taper equation models were tested(Biging(1984),Amidon(1984),Meng Xianyu(1982),Kozak(2004)-Ⅱ,Zeng Weisheng et al.(1997),Max and Burkhart(1976)),and the best-fitting model was selected through nonlinear re-gression to construct the taper-binary volume equation.Results showed that the accuracy of individual tree identification was 95.22%,with the coefficient of determination(R²)for extracted tree height and diameter at breast height(DBH)being 0.97 and 0.98,respec-tively,when compared to field measurements.The optimal taper model achieved an R² of 0.99 and a root mean square error(RMSE)of 0.38 cm.Residual analysis of the Mongolian oak taper-binary volume equation from this study with the existing volume equation showed the reliability of its estimation results.It can provide important technical support for estimating the volume of trees with com-plex trunk shapes using TLS point cloud data.关键词
蒙古栎/地基激光雷达/林木参数/削度方程/材积方程Key words
Mongolian oak/terrestrial laser scanning(TLS)/tree parameters/taper equation/volume equation分类
农业科技引用本文复制引用
李苑鑫,吴楚航,邢艳秋..基于地基激光雷达人工蒙古栎削度-二元材积方程的构建[J].森林工程,2025,41(1):162-173,12.基金项目
国家重点研发计划项目(2021YFE0117700-6). （2021YFE0117700-6）
