DIGITALNA ARHIVA ŠUMARSKOG LISTA
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| ŠUMARSKI LIST 3-5/1992 str. 67 <-- 67 --> PDF |
vrednovanja, metoda na prvi pogled djeluje prilično jednostavno, praktično, pa i pouzdano. LITERATURA 1. Bitterlich , W., 1984: The Relascope ide - relative measurements in forestry. CAB, Great Britain, 242 pp. 2. Emrović , B. & Pranjić , A., 1987: Visinomjer (hipsometar). Šumarska enciklopedija, sv. 3: 576—578, Zagreb. 3. Kružić , T., 1991: Simuliranje sadašnje i buduće distribucije prsnih promjera. Šumarski list, CXV: 55—56, Zagreb. 4. Laar Van, V., 1979: Biometrische Methoden in der Forstwissenschaft. Forschungsberichte I/II, München, 701 pp. 5. Pranjić , A., 1977: Dendrometrija. SIZ Šumarstva, Zagreb, 274 pp. 6. Pranjić , A., 1986: Šumarska biometrika. SNL, Zagreb, 204 pp. Determination of Horizontal Distance in a Stand by a Vertical Angle Method Summary A new method is described for measuring distances in a stand. It is based on measuring the vertical deflection of sighting to a desired point and deflection of the terrain, with known height of a transitman. Data on the value of each individual deflection of the terrain can be substituted by data on the value of the horizontal deflection from the direction of the greatest incline, if it is known. Investigation of the method´s applicability revealed a series of practical problems connected primarily with extreme vulnerability to errors, which work with the existing instruments is necessarily burdened. The application of this method for determination of surfaces and borderlines of sample plots implies a reverse procedure — determination of a desired distance in the field by sighting under the corresponding vertical angle. This procedure is not burrdened by the problems formerly mentioned. Key words : horizontal distance, height of transitman vertial angle, horizontal angle, sample plot |