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| IZVORNI ZNANSTVENI ČLANCI |
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| Kajba D., Krstinić A. | UDK 630* 238 (Alnus L.) 001. |
| Species of the Genus Alnus L. Suitable for Biomass Production
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EN
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131 |
| Kajba D., Krstinić A., Komlenović N. | UDK 630* 238 (Salix sp.) 001. |
| Arborescent Willow Biomass Production in Short Rotations
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EN
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139 |
| Trinajstić, I. | UDK 630* 188 (Pinus nigra Arnold) 001. |
| Nomenclature and Syntaxonomic Revision of Submediterranean Forests of Austrian Pine (Pinus nigra Arnold) in Croatia
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147 |
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| PRETHODNO PRIOPĆENJE |
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| Gallo, C. | UDK 630* 585 + 48 (Fagus silvatica L.) |
| Assessment of Beech (Fagus sylvatica L.) Damage Using Digital Interpretation of Colour Infrared Aerial Photography
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155 |
Summary: The damage status assessment using colour infrared (CIR) aerial photographs are usually performed by visual interpretation. Aerial photographs can be converted in digital form by scanning. The aim of this investigation was to find out the possibilities of automation in the process of damage status assessment on digital CIR aerial photographs due to the fact that base colour components (red, green and blue - RGB) of tree crown are in the strong relationship with its damage status. The investigation was performed on 72 beech trees on CIR aerial photographs of national parks Plitvička jezera and Risnjak, and management unit Brloško. The 54 trees were used in regression analysis, and 18 for the testing of developed regression model. Average accuracy was 27,8 % when the predicted values were classified into six damage stages, and 56,9 % when the predicted values were classified into six damage stages.
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