基于无人机激光雷达技术的树高提取  

Tree height extraction based on UAV LiDAR technology

作　　者：汪澈 黄晓君[1] 霍花拉 WANG Che;HUANG Xiaojun;HUO Huala(College of Geographical Sciences,Inner Mongolia Normal University,Hohhot 011517,China;Inner Mongolia Xingan League Horqin Right Wing Front Banner Ecological Environment Monitoring Station,Xingan League 137700,China)

机构地区：[1]内蒙古师范大学地理科学学院,呼和浩特011517 [2]内蒙古兴安盟科尔沁右翼前旗生态环境监测站,内蒙古兴安盟137700

出　　处：《测绘工程》2025年第3期31-37,共7页Engineering of Surveying and Mapping

基　　金：国家自然科学基金资助项目(42361057);内蒙古高等学校青年科技英才支持计划项目(NJYT22030);内蒙古科技计划项目(2021GG0183);教育部产学合作协同育人项目(202102204002)。

摘　　要：随着遥感技术的发展,无人机激光雷达技术广泛应用于林业遥感中,为探究地形因素对激光雷达数据提取单木树高信息的影响,使用中海达六旋翼无人机Long-120搭载海达ARS-1000L长距离激光雷达测量系统获取试验区激光雷达数据,结合LiDAR360软件对试验区单木树高进行提取,并结合地面实测采集60棵样本树木信息,进行精度评价。研究结果表明:基于CHM分割所得到的RMSE值较小且R 2值均接近于1,CHM分割提取树高的方法精度较准确,可以用于提取树高信息;树木所处的位置海拔越高,激光雷达提取的树高信息精度越高;当树木所处的位置坡度越缓和,激光雷达提取的树高信息精度越高。With the development of remote sensing technology,unmanned aerial vehicle(UAV)Lidar technology is widely used in forestry remote sensing.In order to explore the influence of terrain factors on the extraction of single tree height information from LiDAR data,the Lidar data in the test area is obtained by using ZhongHaida six-rotor UAV Long-120 equipped with Haida ARS-1000L long-range Lidar measurement system.Combined with LiDAR360 software,the height of individual trees in the test area was extracted,and the information of 60 sample trees was collected in combination with ground measurement,and the accuracy was evaluated.The research results showed that the RMSE values obtained based on CHM segmentation are small and the R 2 values are close to 1,which indicates that the method of extracting tree height using CHM segmentation is more accurate and can be used to extract tree height information.The higher the altitude of the tree,the higher the accuracy of the tree height information extracted by LiDAR.Steep terrain has an impact on the segmentation of single trees.The more moderate the slope of trees,the higher the accuracy of tree height information extracted by LiDAR.

关 键 词：无人机 激光雷达技术 树高提取 冠层高度模型 单木尺度 

分 类 号：P237[天文地球—摄影测量与遥感]