| 闫宸擘,魏建新,巴比尔江·迪力夏提.基于背包激光雷达数据的胡杨生长模型研究[J].林业调查规划,2025,50(2):1-8 |
| 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 |
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| DOI： |
| 中文关键词: 背包式激光雷达 塔里木河流域 胡杨 点云数据 生长模型 |
| 英文关键词: backpack laser scanning Tarim River basin Populus euphratica point cloud data growth model |
| 基金项目:自然资源信息集成与公共服务平台建设(65000023P0000810002M). |
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| 摘要点击次数: 64 |
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| 中文摘要: |
| 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(R2)为0.853 9~0.988 0。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R2值为0.719 4。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。 |
| 英文摘要: |
| 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 R2 values between the extracted and measured DBH and tree height data ranged from 0.853 9 to 0.988 0. The best model constructed from these data was the logistic
model, with a model verification R2 value of 0.719 4. 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. |
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