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Technical rule [WITHDRAWN]

VDI 3793 Blatt 2:1993-10

On-site determination of vegetational injuries; interpretation keys to evaluate aerial CIR-photographs for the assessment of crown conditions of coniferous and deciduous trees; spruce, beech, oak, and pine

German title
Messen von Vegetationsschäden am natürlichen Standort; Interpretationsschlüssel für die Auswertung von CIR-Luftbildern zur Kronenzustandserfassung von Nadel- und Laubgehölzen; Fichte, Buche, Eiche und Kiefer
Publication date
1993-10
Original language
German, English, French

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Publication date
1993-10
Original language
German, English, French

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Short description
Aerial images have proven valuable regarding the status documentation of forests and vegetation stands and the monitoring of status changes. For the evaluation of aerial images, interpretation keys are applied. A consistent terminology and the same structure of these interpretation keys for the entire range of applications ensure that the results of temporally or spatially different inventories based on aerial images are comparable. It is only on this condition that aerial photographs can be used to document regional, federal and national comparisons as well as the various stages of long-term monitoring. The interpretation keys described in the Standard have been established for the evaluation of the state of crowns of individual trees. They are applied for the evaluation of analogous aerial images (in Germany found in archives) and for the assessment of crown conditions with digital images.
Content
ICS
13.020.30
Replacement amendments

This document has been replaced by: VDI 3793 Blatt 2:2020-06 .

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