A comparison of biophysical parameter retrieval for forestry using airborne and satellite LiDAR
A comparison of biophysical parameter retrieval for forestry using airborne and satellite LiDAR
复制标题
DOI：
10.1080/01431160903022944
复制
发表时间：
2009-09
影响因子：
3.4
通讯作者：
J. Rosette;P. North;J. Suárez;J. Armston
中科院分区：
文献类型：
--
作者：
J. Rosette;P. North;J. Suárez;J. Armston
本文比较了植被高度指标和分数覆盖一致的小足迹，离散返回机载光探测和测距（LiDAR）扫描数据（Optech机载激光地形测绘仪（ALTM））与估计的大足迹，全波形LiDAR轮廓使用地球科学激光高度计系统（GLAS）。最大冠层高度的估计值表明两种方法之间的对应关系，R2 = 0.68（rms）。误差（RMSE）= 4.4m）。第99次回归方程（常与林木顶高相关）的相关系数为R2 = 0.75，RMSE = 3.5m。表面高程极限的检测对应良好（R2 = 0.71，RMSE = 5.0 m）。卫星波形和机载激光雷达冠层覆盖估计之间的相关性给出了R2 = 0.41和R2 = 0.63的针叶树或阔叶树种的优势覆盖，分别。结果表明，广泛的冰，云和陆地高程卫星（ICESat）/GLAS足迹可以提供混合植被冠层高度的估计，这是从相对高密度的机载激光雷达数据。
This paper compares vegetation height metrics and fractional cover derived from coincident small footprint, discrete return airborne Light Detection and Ranging (LiDAR) scanning data (Optech Airborne Laser Terrain Mapper (ALTM)) with those estimated from large footprint, full waveform LiDAR profiling using the Geoscience Laser Altimeter System (GLAS). Estimates of maximum canopy height showed correspondence between the two methods with R2 = 0.68 (rms. error (RMSE) = 4.4 m). The relationship between 99th percentiles (often associated with forestry top height) showed R2 = 0.75, RMSE = 3.5 m. Detection of surface elevation limits corresponded well, (R2 = 0.71, RMSE = 5.0 m). Correlations between satellite waveform and airborne LiDAR canopy cover estimates gave R2 = 0.41 and R2 = 0.63 for dominant cover of conifers or broadleaf species, respectively. The results suggest that the broad Ice, Cloud and land Elevation Satellite (ICESat)/GLAS footprints can provide estimates of mixed vegetation canopy height which are comparable to those obtained from relatively high density airborne LiDAR data.