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林业科学 ›› 2010, Vol. 46 ›› Issue (9): 84-87.doi: 10.11707/j.1001-7488.20100914

• 论文 • 上一篇    下一篇

利用大光斑激光雷达数据估测树高和生物量

于颖,范文义,李明泽,杨曦光   

  1. 东北林业大学林学院 哈尔滨 150040
  • 收稿日期:2009-05-16 修回日期:2009-11-26 出版日期:2010-09-25 发布日期:2010-09-25
  • 通讯作者: 范文义

Estimation of Forest Tree Heights and Biomass from GLAS Data

Yu Ying;Fan WenyiLi; Mingze;Yang Xiguang   

  1. School of Forestry, Northeast Forestry University Harbin 150040
  • Received:2009-05-16 Revised:2009-11-26 Online:2010-09-25 Published:2010-09-25

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。

关键词: 激光雷达, GLAS, 树高, 生物量

Abstract:

Remote sensing technology in measuring quantitatively the vertical and spatial distribution of forest structure draws more and more domestic and foreign scientists attention, 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.

Key words: lidar, GLAS, tree height, biomass