文献类型：期刊文献

中文题名：机载LIDAR点云数据估测单株木生物量

英文题名：Estimating biomass of individual trees using point cloud data of airborne LIDAR

作者：刘清旺[1] 李增元[1] 陈尔学[1] 庞勇[1] 田昕[1] 曹春香[2]

第一作者：刘清旺

通信作者：Li, Z.

机构：[1]中国林业科学研究院资源信息研究所林业遥感与信息技术重点开放性实验室;[2]中国科学院遥感应用研究所遥感科学国家重点实验室

年份：2010

期号：7

起止页码：765-770

中文期刊名：高技术通讯

外文期刊名：Chinese High Technology Letters

收录：CSTPCD;;EI(收录号：20103313151461);Scopus(收录号：2-s2.0-77955435634);北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：863计划(2007AA12Z173;2006AA12Z10);973计划(2007CB714404)资助项目

语种：中文

中文关键词：激光雷达(LIDAR);树高;冠幅;胸径(DBH);相关生长方程;生物量;青海云杉

外文关键词：light detection and ranging （LIDAR）, tree height, crown diameter, diameters at breast height （DBH）, allometric growth equation, biomass, Picea crassifolia

分类号：S718.556

摘要：使用黑河流域遥感-地面观测同步试验获取的机载激光雷达(LIDAR)点云数据估测了典型树种的单株木生物量。首先由点云数据生成冠层高度模型(CHM),然后采用优化的单株木树冠特征识别算法估测相关的结构参数,最后通过回归分析建立估测参数(树高、冠幅)与实测参数(树高、冠幅、胸径)之间的最优回归方程,并与现有的单株木生物量实测相关生长方程联立,得到单株木生物量估测相关生长方程。结果表明,由LIDAR点云数据得到的单株木估测参数与实测参数显著相关,可以估测单株木生物量(R^2为0.729)。
The representative species＇ biomass of individual trees was estimated using the point cloud data from airborne light detection and ranging （LIDAR） obtained by the simultaneous remote sensing and ground-based experiment in the Heihe River Basin. Firstly, the canopy height model （CHM） was created from the point cloud data. Then, the relatively structural parameters were extracted using the optimized algorithm of crown feature recognition of individual trees. Finally, the optimal regression equations between the estimated parameters （such as tree heights, crown diameters） and the field-measured parameters （such as tree heights, crown diameters, diameters at breast height （DBHs）） were obtained by the linear regression analysis, and they were combined with the allometric growth equations of the field-measured biomass of individual trees to get the allometric growth equations of estimated biomass of individual trees. In conclusion, the correlation is obvious between the field-measured parameters and the estimated parameters of individual trees from point cloud data, which can be used to estimate biomass of individual trees （R2 is 0.729）.