欢迎访问林业资源管理

林业资源管理 ›› 2022, Vol. 0 ›› Issue (6): 131-137.doi: 10.13466/j.cnki.lyzygl.2022.06.020

• 技术应用 • 上一篇    下一篇

融合机载和背包激光雷达的桉树单木因子估测

张信杰1(), 郑焰锋1, 温坤剑2, 王鹏杰1, 吴发云1()   

  1. 1.国家林业和草原局林草调查规划院,北京 100714
    2.国家林业和草原局中南调查规划院,长沙 410014
  • 收稿日期:2022-10-10 修回日期:2022-10-24 出版日期:2022-12-28 发布日期:2023-01-16
  • 通讯作者: 吴发云
  • 作者简介:张信杰(1984-),男,山东郓城人,工程师,主要从事林草资源调查与监测、营造林工程设计等方面的工作。Email:1984zhangxinjie@163.com
  • 基金资助:
    2020年行业管理专项业务经费“陆地碳卫星星机地综合实验”(2020-21-89);国家林草局自主研发计划项目“航空和背包激光雷达空地耦合的森林资源调查监测关键技术研究及示范应用”(LC-1-01)

Estimation of Single Tree Factor of Eucalyptus by Merging Airborne and Backpack LiDAR

ZHANG Xinjie1(), ZHENG Yanfeng1, WEN Kunjian2, WANG Pengjie1, WU Fayun1()   

  1. 1. Academy of Forestry Inventory and Planning,National Forestry and Grassland Administration,Beijing 100714,China
    2. Central South Inventory and Planning,National Forestry and Grassland Administration,Changsha 410014,China
  • Received:2022-10-10 Revised:2022-10-24 Online:2022-12-28 Published:2023-01-16
  • Contact: WU Fayun

摘要:

以海南省五指山市4块人工桉树林共计157株桉树为例,融合背包激光雷达和机载激光雷达点云数据对桉树单木因子进行了估测,探究融合数据在森林资源调查中的适用性。估测结果与实际样地数据对比表明,融合点云数据在胸径的估测上,R2=0.982,RMSE=0.868cm;在树高的估测上,R2=0.895,RMSE=2.005m,优于只使用背包激光雷达数据获取树高精度(R2=0.835,RMSE=2.458m)。基于背包激光雷达点云数据获取的单木胸径精度较高,融合点云数据可改善单一背包点云数据对树高上的估测。

关键词: 背包激光雷达, 机载激光雷达, 单木参数, 胸径, 树高

Abstract:

We investigated the applicability of fused data in forest resource surveys by fusing backpack LiDAR and airborne LiDAR point cloud data to estimate the single wood factor of eucalyptus trees in four eucalyptus plantations in Wuzhishan City,Hainan Province,with a total of 157 eucalyptus trees. A comparison of the results with the actual sample plots showed that the fused point cloud data had an R2=0.982 and RMSE=0.868cm for the estimation of diameter at breast height,and R2=0.895 and RMSE=2.005m for the estimation of tree height,which was better than that of the high accuracy of the tree obtained using only backpack LiDAR data (R2=0.835 and RMSE=2.458m).This study demonstrated that backpack LiDAR-based point cloud data was more accurate in obtaining single wood diameter at breast height,and that fused point cloud data could improve the estimation of tree height from single backpack point cloud data.

Key words: backpack LiDAR, airborne LiDAR, single wood parameters, diameter at breast height, tree height

中图分类号: