利用大光斑激光雷达数据估测树高和生物量  

Estimation of Forest Tree Heights and Biomass from GLAS Data

作　　者：于颖[1] 范文义[1] 李明泽[1] 杨曦光[1] 

机构地区：[1]东北林业大学林学院,哈尔滨150040

出　　处：《林业科学》2010年第9期84-87,共4页Scientia Silvae Sinicae

基　　金：国家高技术研究发展计划课题(2006AA12Z104)

摘　　要：通过对大光斑激光雷达数据GLAS波形的处理,建立模型反演树高、生物量并做精度检验,理论精度分别为93.7%和91.3%。结果表明:利用激光雷达数据反演树高、生物量比传统方法的精度有显著提高。Remote sensing technology in measuring quantitatively the vertical and spatial distribution of forest structure draws more and more domestic and foreign scientistsattention,and is an important tool to understand the function of forest ecosystems,forest carbon storages and global carbon cycle.The laser radar is superior in detecting the forest vertical structure to other remote sensing data.The purpose of this study was to establish a model to estimate tree height and biomass by processing the GLAS（geoscience laser altimeter system） waveform data,and make the validation,the precisions for the height and biomass estimation were 93.7% and 91.3%,respectively.The result demonstrated that the precision of estimating tree height and biomass was remarkably improved by using LIDAR,comparing with the traditional methods.This study provided important references for researches on mapping the forest vertical parameters.

关 键 词：激光雷达 GLAS 树高 生物量 

分 类 号：S758.5[农业科学—森林经理学]