Reconstruction of two-dimensional tree and forest canopy profiles using photographs.
Reconstruction of two-dimensional tree and forest canopy profiles using photographs.
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使用照片重建二维树木和森林冠层轮廓。
DOI：
10.2307/2403240
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发表时间：
1985
影响因子：
5.7
通讯作者：
F. Koike
中科院分区：
文献类型：
--
作者：
F. Koike
(1)采用点-样方方法和计算机层析成像技术，对树冠和林冠不同位置拍摄的多幅照片进行了树冠和林冠叶密度的二维重建。(2)CT重建的冠层轮廓(冠层剖面中叶密度分布的图形表示)与剪裁法得到的叶面积密度分布模式相似。计算的叶密度与实际叶面积密度成正比。(3)仅从地面拍摄的照片即可重建冠层剖面。(4)将该方法应用于暖温带常绿阔叶林，定量地、非破坏性地得到了森林冠层的二维结构。
(1) A point-quadrat method and computed tomography were used to reconstruct two-dimensional foliage density distributions in tree and forest canopies using many photographs taken from various positions in a canopy section. (2) The reconstructed canopy profile (the graphical representation of the foliage density distribution in a canopy section) obtained by computed tomography was similar to the pattern of leaf area density distribution obtained by the clipping method. The calculated foliage density was in direct proportion to the actual leaf area density. (3) Canopy profiles could be reconstructed with photographs taken from the ground level alone. (4) The method was applied to a warm-temperate, evergreen, broad-leaved forest, and a two-dimensional forest canopy structure was obtained quantitatively and nondestructively.