Akihiro TAGO
A study on the understanding of forest structure using a waveform recording information by airborne LIDAR
Atsushi RIKIMARU
Kazuyoshi TAKAHASHI
In this study, we aimed to be used reflection intensity and spatial location of the laser one pathway is a waveform record data of the airborne LIDAR, to understand the forest structure. First, using a spatial position information, analyzes the vertical distribution of trees inside, and grasped the density state of the community. I was grasped from the reflection intensity space occupancy of leaf surface.
It was the result of following the analysis of the vertical distribution grasp of trees inside. Japanese Walnut, Black locust It was found that the canopy length is short as vertical distribution, reflection point is in tight. Because, the difference between quartile value of Z and median Z is small. Also, white willow, it was found that the canopy is long as vertical distribution, reflection point is in sparse. Unlike other forest structure, the difference between quartile value of Z and median Z is greater
It was the result of the following analysis of the spatial characterization foliar occupied with the reflection intensity. I went to calculate the leaf surface occupancy per one piece of foliar size. Leaf surface occupancy per one piece was 10 to 20% of the measured value.Measured value was found to not be separated one sheet at quarter data values above the Z to the influence of leaflets adjacent. However, suggesting that the proposed method is able to leaf surface know by using the data of the quartile value below the first pulse of more than 10m and the reflection intensity.
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