Naslov
Area assessment of the visible part of penduculate oak (Quercus Robur, L.) crowns in aerial photographs

Autori
Benko, Miroslav ; Hunjet, Dubravko ; Szirovicza, Lajos

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings: 2nd International Symposium on Application of Remote Sensing in Forestry / - Zvolen : Faculty of Forestry, Technical University in Zvolen, 1996, 103-110

Skup
2nd International Symposium on Application of Remote Sensing in Forestry

Mjesto i datum
Zwoleń, Poljska, 10-12.09

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
crown; visible part of the crown; crown area; area of the visible part of the crown; measurement photointerpretation; forest measurement; forest inventory; forest management; Penduculate oak

Sažetak
The paper discusses several different methods of assessing the area of the visible part of Penduculate oak ( Quercus robur, L.) crown ( PKR_POL, PKR _KRUG, PKR_ELI1, PKR_ELI2) in the II-G-10 ecological-management type, measured by colour infrared aerial photographs with an approximate scale of 1 : 10000, using the Leica BC3 stereo instruments. Absolute coordinates (x, y, z) of the points at the edge of the visible part of the crown and the crown top ( tree) were read for each studied tree. Four methods of assessing the area of the visible part of the crown were studied: a: as a polygon (PKR_POL) ; b: as a circle (PKR_KRUG) ; c: as an ellipse with the minor axis intersecting the centre of the major axis (PKR_ELI1). These research activities are aimed at applying photogrammetrical methods to forest measurement and management, that is, at ensuring the precise measurement of the factors in the visible parts of crowns in aerial photographs.

Izvorni jezik
Engleski

Znanstvena područja
Etnologija i antropologija

POVEZANOST RADA