集成高分辨率UAV影像与激光雷达点云的亚热带森林林分特征反演
许子乾, 曹林, 阮宏华, 李卫正, 蒋圣

Inversion of subtropical forest stand characteristics by integrating very high resolution imagery acquired from UAV and LiDAR point-cloud
XU Zi-Qian,CAO Lin,RUAN Hong-Hua,LI Wei-Zheng,JIANG Sheng
表3 多元回归分析变量表
Table 3 List of independent variables for this study
自变量(归一化点云提取参数)
Independent variable		 因变量(实测参数)
Dependent variable
高度分位数
Height percentile
(h10, h25, h30, h40, h60, h75, h85, h90)		 Lorey’s树高 Lorey’s height (m)
林分密度 Stand density (plant·hm-2)
胸高断面积 Basal area (m2·hm-2)
蓄积量 Volume (m3·hm-2)
点云密度变量
Point cloud density variables
(d10, d25, d30, d40, d60, d75, d85, d90)
高度均值 Average height (havg)
高度最值 Maximum/minimal height (hmax, hmin)