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Vliv vlhkosti půdy na hydrologickou odezvu povodí při různých srážkových úhrnech
TOMANOVÁ, Markéta
This diploma thesis deals with the Influence of soil moisture on hydrological response of a catchment to precipitation. The study was conducted on the sub-basin of Jenínský stream in the monitored vegetation period for the years 2010 - 2013. The characteris-tics such as total precipitation, flow and soil volume moisture at different depths were monitored. The first part of this thesis contains a literature study that mentions soil moisture as one of the factors influencing the hydrological response of river drainage basins to precipitation. In the practical part, the thesis deals with the evaluation of measured precipitation totals and descriptive statistical values of flow and soil moisture at a depth of 30 cm, 60 cm, 90 cm, 150 cm and 200 cm. The other section of the practical part deals with significant precipitation episodes and their impact of rain intensity on water runoff from the basin. The final objective is to evaluate the effect of soil moisture on surface runoff characteristics at different precipitation totals.
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Porovnání utužení půdy na zemědělském pozemku v závislosti na použité technologii jejího zpracování
MACH, Václav
The diploma thesis deals with the issue of soil degradation by compaction and with the influence of different method of cultivation on pedocompaction. It describes the problem of soil compaction, origin of this degradation, its impacts and whether it is possible to prevent the compaction or eliminate it afterwards. It also deals with description of measuring device which is able to find out the figures of penetrometric resistance of soil and its moistness. The thesis also closely describes individual work operations that have been done on the land. The tillage is analysed in detail because it is the system of cultivation that can highly influence the compaction. The most commonly used systems of soil cultivation are mentioned with their advantages and disadvantages. The experiment in the diploma thesis deals with the influence of soil compaction using different technology in its process. The field experiment took place on a trial field that was divided into two parts in terms of tillage. The first part was used for ploughing within three years and on the other ploughing was replaced by loosening. After collecting necessary data their evaluation took place. The figures of penetrometric resistance and soil moisture are summarized in tables and plotted in graphs for better interpretation.
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Variability of hydropedological characteristics in model catchments of Blanice River headwater area
Kozáková, Jana ; Kliment, Zdeněk (advisor) ; Královec, Václav (referee)
In this thesis are based on the scientific literature defined selected hydropedologic characteristics and is described their impact on motion and amount of water.in the soil and also on the runoff process. In this thesis are quoted methods that can be used for measuring motion and amount of water. Data obtained on several field campaigns and continuous measurement of soil moisture sensors Virrib was processed. Field campaign took place in catchments of Zbytinský and Tetřívčí stream, which are paired comparative experimental catchments. The continuous soil moisture was measured at three places, which differ in their vegetation and soil cover. Data Analysis was concentrate to evaluate soil moisture measured by Virrib, which were compared to soil moisture determined during field campaigns. The continuous soil moisture was measured at three places, which differ in their vegetation and soil cover. The results show that differences and similarities in the vegetation and soil cover greatly reflect on soil moisture. Subsequent comparison of two differently obtained soil moisture should show that the values obtained from Virrib are representative. But comparations of values discover, that in Virrib measurement can be found some inaccuracies. Keywords: hydropedological characteristics, runoff process,...
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IoT system for gardening
Mlčák, Petr ; Kiac, Martin (referee) ; Caha, Tomáš (advisor)
The thesis deals with the design and creation of a weather station suitable for gardeners. The created device is able to measure temperature, pressure, humidity, amount of precipitation, wind speed and direction, UV index and also temperature and soil moisture at several depths. The weather station is powered by a battery with auxiliary charging from a photovoltaic panel. The thesis is divided into several parts. The theoretical part describes the individual physical principles of measurement of the considered physical quantities. Subsequently, a comparison of available sensors is made and then a final selection is made. The third part deals with the design and implementation of the hardware circuitry including the creation of the PCB. In this section, the holders of each sensor are also designed for printing on a 3D printer, which are then printed. The fourth section deals with software design issues, which is described in more detail. Finally, the whole weather station is assembled, wired and the functionality of all components is verified by sending the measured data to Thingspeak.
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