基于TLS点云数据的桉树二元材积表检验  

Test of Eucalyptus Binary Volume Table Based on TLS Point Cloud Data

作　　者：潘黄儒 孟想 张振林 唐一飞 刘玉军 蔡会德 卢峰 Pan Huangru;Meng Xiang;Zhang Zhenlin;Tang Yifei;Liu Yujun;Cai Huide;Lu Feng(Guangxi Forest Resources and Environment Monitoring Center,Nanning,Guangxi 530028,China;Nanning Arboretum,Nanning,Guangxi 530031,China)

机构地区：[1]广西壮族自治区森林资源与生态环境监测中心,广西南宁530028 [2]广西壮族自治区南宁树木园,广西南宁530031

出　　处：《广西林业科学》2023年第4期516-521,共6页Guangxi Forestry Science

基　　金：广西自筹经费林业科技项目(桂林科研[2022ZC]第9号)。

摘　　要：为确保桉树(Eucalyptus spp.)伐区设计的准确性,采用地基激光雷达(TLS)对桉树人工林进行扫描,获取点云数据,通过点云数据提取的单木因子,建立理论材积与实测材积的回归方程,采用F检验、总相对误差(TRE)和均方误差(MSE)等作为评价指标,对现行使用的桉树二元材积表在桉树伐区的适用性进行检验。结果表明,点云数据提取的单木因子与实测值具有很高的相关性,且误差较小。F检验值超过临界值,但TRE基本趋近于0%,且MSE为-2.36%,均不超出±3%,说明模型适用。基于地基激光雷达点云数据提取的桉树单木因子符合测树精度要求;现行使用的广西桉树二元材积表适用于该伐区;进行材积表检验时,F检验并不能完全准确判断,要综合TRE、MSE指标进行判断。In order to ensure accuracy of eucalypt cutting area design,terrestrial laser scanner(TLS)was used to scan eucalypt plantations to obtain point cloud data,single tree factors were extracted from point cloud data,regression equation between theoretical volume and measured volume was established.F test,total relative error(TRE),mean square error(MSE)were used as evaluation indicators,and applicability of Guangxi Eucalyptus binary volume table in eucalypt cutting areas was tested.Results showed that single tree factors extracted from point cloud data had high correlations with measured values,and errors were small.Value of F test exceeded critical values,but TRE basically approached 0%,and MSE value was -2.36%,both of which did not exceed±3%,which indicated that model was applicable.Single tree factors of eucalypt extracted from TLS point cloud data met accuracy requirements for tree measurement.Guangxi Eucalyptus binary volume table which was currently used was applicable to cutting area.When conducting volume table testing,F test could not be completely accurate,and it should be judged by combining TRE and MSE indicators.

关 键 词：材积表 适用性检验 激光雷达 桉树 

分 类 号：S792.39[农业科学—林木遗传育种]