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标题：Lidar Remote Sensing of Aboveground Biomass in Three Biomes
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作者：M. A. Lefsky ; W. B. Cohen ; D. J. Harding 等
期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2002
卷号：XXXIV-3/W4
出版社：Copernicus Publications
摘要：Estimation of the amount of carbon stored in forests is a key challenge for understanding the global carbon cycle, one which remote sensing is expected to help address. However, direct estimation of carbon storage in moderate to high biomass forests is difficult for conventional optical and radar sensors. Lidar (li ght d etection a nd r anging) instruments measure the vertical structure of forests and thus hold great promise for remotely sensing the quantity and spatial organization of forest biomass. In this study, we compare the relationships between lidar-measured canopy structure and coincident field measurements of aboveground biomass at sites in the temperate deciduous, temperate coniferous, and boreal coniferous biomes. A single "simplified" regression for all three sites is compared with equations derived for each site individually. The simplified equation explains 84% of variance in aboveground biomass (p<0.0001) and shows no statistically significant bias in its predictions for any individual site
关键词：Laser altimetry; lidar; forest; biomass