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Author (up) Pflugmacher, D.; Cohen, W.; Kennedy, R.; Lefsky, M. openurl 
  Title Regional Applicability of Forest Height and Aboveground Biomass Models for the Geoscience Laser Altimeter System Type Journal Article
  Year 2008 Publication Forest Science Abbreviated Journal  
  Volume 54 Issue 6 Pages 647-657  
  Keywords lidar; geoscience laser altimeter system; forest height; forest biomass; remote sensing; landsat-tm; vegetation; radar; estimators; inventory; balance; boreal; sinks; area  
  Abstract Accurate estimates of forest aboveground biomass are needed to reduce uncertainties in global and regional terrestrial carbon fluxes. In this study we investigated the utility of the Geoscience Laser Altimeter System (GLAS) onboard the Ice, Cloud and land Elevation Satellite for large-scale biomass inventories. GLAS is the first spaceborne lidar sensor that will provide global estimates of forest height. We compared accuracy and regional variability of GLAS height estimates with data from the US Forest Service Inventory and Analysis (FIA) program and found that current GLAS algorithms provided generally accurate estimates of height. GLAS heights were oil average 2-3 m lower than FIA estimates. To translate GLAS-estimated heights into forest biomass will require general allometric equations. Analysis of the regional variability of forest height-biornass relationships using FIA field data indicates that general nonspecies specific equations are applicable without a significant loss of prediction accuracy. We developed biomass models from FIA data and applied them to the GLAS-estimated heights. Regional estimates of forest biomass from GLAS differed between 39.7 and 58.2 Mg ha(-1) compared with FIA. FOR. Sci. 54(6):647-657.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Pflugmacher, DOregon State Univ, Dept Forest Sci, 321 Richardson Hall, Corvallis, OR 97331 USAOregon Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0015-749x ISBN Medium  
  Area Expedition Conference  
  Notes 387AQTimes Cited:0Cited References Count:38 Approved no  
  Call Number geomatics @ Pflugmacher2008 Serial 217  
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