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Efficient forest data collecting using modern measuring instruments
 Formánek, Nikola ; Urbánek, Vilém (advisor) ; Kašpar, Jan (referee)
The subject of the thesis is to focus on breast-height diameter thickness and height of trees in area of Tři Skalky, Vůznice a Červený kříž for the purpose of forest environment monitoring in the protected landscape area and biosphere area Křivoklátsko. Furthermore to analyze new modern devices and evaluate their precision, speed and subsequent use for the purpose of observing similar research areas and to compare two methods of detecting breast-height diameter thickness (caliper, perimeter zone). During taking dendrometric variables were used digital calipers Mantax Digitech II, Digitech Professional II, Mantax digitech and Vertex Laser altimeter. Digital caliper DP II offers the possibility of its use with a variety of accessories and it was tested in conjunction with a GPS device to locate the researched areas on the map. All tested devices proved to be valuable tools for efficient data collection. For long term monitoring of chosen areas is recommended most advanced digital caliper Digitech Professional II. Comparison of acquired data taken with digital caliper and a digital peripheral zone showed that the resulting values are very similar and in compliance with all principles of measurement. Both of these methods are useable for monitoring radial increment.
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