基于背包激光雷达数据的胡杨生长模型研究  

Growth Model of Populus euphratica Based on Backpack Laser Scanning Data

作　　者：闫宸擘 魏建新 巴比尔江·迪力夏提 YAN Chenbo;WEI Jianxin;BABIERJIANG Dilixiati(College of Geography and Remote Sensing Science,Xinjiang University,Urumqi 830017,China;Xinjiang Lidar Application Engineering Technology Research Center,Urumqi 830002,China;Natural Resources Information Center of Xinjiang Uygur Autonomous Region(Xinjiang Uygur Autonomous Region Natural Resources Archives),Urumqi 830002,China)

机构地区：[1]新疆大学地理与遥感科学学院,新疆乌鲁木齐830017 [2]新疆激光雷达应用工程技术研究中心,新疆乌鲁木齐830002 [3]新疆维吾尔自治区自然资源信息中心(新疆维吾尔自治区自然资源档案馆),新疆乌鲁木齐830002

出　　处：《林业调查规划》2025年第2期1-8,共8页Forest Inventory and Planning

基　　金：自然资源信息集成与公共服务平台建设(65000023P0000810002M).

摘　　要：背包激光雷达(BLS)扫描系统操作简便、高效,但目前在林业调查中的应用还不广泛。利用BLS点云数据提取胡杨林单木的胸径和树高,探讨其精度,并构建相关模型。采用LiBackpack DGC50背包激光雷达对塔里木河干流流域的35块样地进行数据采集,通过对点云数据进行预处理、归一化、去噪及单木分割等操作,提取出单木的胸径和树高。结果表明,提取的胸径和树高数据与实测数据之间的决定系数(R^(2))为0.8539~0.9880。基于这些数据构建的最佳模型为逻辑斯蒂模型,其模型检验指标R^(2)值为0.7194。验证了BLS在数据采集及模型构建方面的准确性,为其在天然林单木生长建模领域的应用提供了理论基础。The backpack laser scanning(BLS)system is convenient and efficient,yet it has not been widely applied in forestry surveys.This study explored the accuracy of extracting diameter at breast height and tree height of individual trees from natural Populus euphratica forests using BLS point cloud data and constructed a DBH-tree height model.Data were collected from 35 plots in the main stream basin of the Tarim River using the LiBackpack DGC50 backpack laser scanner.The point cloud data underwent preprocessing,normalization,denoising and individual tree segmentation to extract the DBH and tree height of individual trees.The results showed that the R^(2) values between the extracted and measured DBH and tree height data ranged from 0.8539 to 0.9880.The best model constructed from these data was the logistic model,with a model verification R^(2) value of 0.7194.The results demonstrated the accuracy of BLS in data collection and model construction,providing further theoretical basis for the application of BLS in the field of individual tree growth modeling in natural forests.

关 键 词：背包式激光雷达 塔里木河流域 胡杨 点云数据 生长模型 

分 类 号：S792.11[农业科学—林木遗传育种] V556.7[农业科学—林学] S758.52[航空宇航科学与技术—人机与环境工程]