engleski

Relations of photogrammetry assessment of visible part of tree crown common Oak (Quercus robur L.) on tree volume, modelling regeneration success and early growth of forest stands

The paper deals with the relations within the photogrammetrically assesed factors working of visible parts of the common oak (Quercus robur L.) crown (losf, oosf, Posf, vosf) in the ecological management type II-G-10, measured with colour infrared aerial photography at approximate scale 1:6000, and the Leica BC3 stereo instrument. Absolute coordinates (x, y, z)of the points on the top and along the girth of the visible crown parts were read for each tree. The research encompassed the relations among length (losf), girth (oosf), surface (Posf) and volume (vosf) of the visible part of the crown, all measured by photogrammetry, and their influence on the tree volume (v). Their regression models were made and tested using the methods of multi-dimensional analyses. The purpose of the research is the application of the photogrammetric methods in the survey and management of forests, i.e. testing the accuracy of the mentioned elements ofn the aerial photography, and the applicability of the results to the direct assessment of tree volume.

photogrammetry assessment; common oak; Quercus robur L.; tree volume; tree crown

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