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- W2000345291 abstract "The mean tree height of forest stands is a crucial stand characteristic in forest planning. Currently, the mean tree height is determined by field measurements or by photogrammetric measurements utilizing aerial photographs. In this study, mean tree height of 36 test stands is derived from tree canopy heights measured by means of an airborne laser scanner. On the average the laser recorded 505–1070 canopy heights per stand. First, the laser mean height is computed as the arithmetic mean of the canopy heights within each stand. The laser mean height underestimates the ground truth mean height by 4.1–5.5 m. Second, a weighted mean of the laser canopy heights is computed. The individual height values are used as weights. The weighted mean height underestimates the true height by 2.1–3.6 m. Finally, the laser mean height is computed as the arithmetic mean of the largest laser values within square grid cells with cell sizes of 15–30 m. The bias of the laser estimates is in the range −0.4 m to 1.9 m. The standard deviation for differences between the laser mean heights and the ground truth mean height is 1.1–1.6 m." @default.
- W2000345291 created "2016-06-24" @default.
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- W2000345291 date "1997-04-01" @default.
- W2000345291 modified "2023-10-04" @default.
- W2000345291 title "Determination of mean tree height of forest stands using airborne laser scanner data" @default.
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- W2000345291 doi "https://doi.org/10.1016/s0924-2716(97)83000-6" @default.
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