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Non destructive sensors for measurement of the very slow change of the biological structure dimensions
Kostka, Filip ; Kubásek, Radek (referee) ; Friedl, Martin (advisor)
The aim of this thesis is to record a very small increment of the perimeter trees in one day using dendrometr. As the sensor is used tensometer strain gauge, which the deformation of its shape also changes its resistance and it is used subsequently to monitor the recording of growth. Data from dendrometr are handles by digital multimeter, which is synchronized with the PC, where further processing occurs date. This semester project also deals with the thermal expansion of metal parts of dendrometr and ambient conditions during the experiment.
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Determination of stress of Norway spruce by direct methods
Krejza, Jan ; Světlík, J. ; Bellan, Michal ; Horáček, Petr
The aim of this methodology is to introduce methods of forest ground monitoring leading to evaluation of Norway spruce tree vitality. Certified methodology describes: measuring of the stem surface temperature by thermography, measuring of the sap flow, measuring the stem diameter fluctuation and by the analysis of xylogenesis and wood morphology. Emphasis was placed on the detection of the stress reaction before occurrence of the visual symptoms. The aim of this methodology is to present a comprehensive set of methods for measuring ecopysiological activity of a tree and to determine its health status. The goal of this methodology is to provide a unique tools for foresters and for forest management for direct and precise evaluation of health status of individual trees, but also a whole complexes of forest from the ground perspective. The individual methodological approaches are defined, can be used in practice and their interpretation is unambiguous. The novelty is based on the direct measurement of the physiological activity of the individual trees, which exclude any degree of subjectivity in the evaluation process.
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Non destructive sensors for measurement of the very slow change of the biological structure dimensions
Kostka, Filip ; Kubásek, Radek (referee) ; Friedl, Martin (advisor)
The aim of this thesis is to record a very small increment of the perimeter trees in one day using dendrometr. As the sensor is used tensometer strain gauge, which the deformation of its shape also changes its resistance and it is used subsequently to monitor the recording of growth. Data from dendrometr are handles by digital multimeter, which is synchronized with the PC, where further processing occurs date. This semester project also deals with the thermal expansion of metal parts of dendrometr and ambient conditions during the experiment.
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