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Microclimate and energy balance characteristics of the stands with different management
ERBEN, Jiří
The present thesis deals with the microclimate and energy balance indicators of 2 habitats with different types of vegetation (wetland, pasture) during the growing season. Mainly moisture and temperature regime and energy fluxes were monitored in the period of 1.4. to 30.9., 2014. All values were dependent on the type of vegetation, and the type and location of the environment. Microclimate analysis was performed on two locations - in a pasture in the basin of Mlýnský stream and wetland habitat in the basin of Horský stream. Both sites are located on the right bank of the Lipno lake. All the necessary meteorological characteristics were measured using automatic weather stations. Indicators of temperatures and humidity of soil and air, received, and the total amount of reflected sunlight and heat balance characteristics - albedo, Bowen ratio, evaporative fraction and heat flows were evaluated. The biggest differences were monitored at heights, in which was measured. In terms of relative humidity, values most varied at canopy level, where the differences were noticeable. The highest mean relative humidity was measured at height of 0.2 m and 2 m on the wetland. As relative humidity even air temperature is dependent on the height at which it was measured. While the height of 2 m, the values at both sites was almost identical, at the canopy level are differences significant. The average temperature values depend on the season, but the largest amplitude of the temperature reached the sites in June. The surface temperature of the soil at the wetland was almost unchanged, contrary to pasture its course was similar to air temperatures series at the canopy level. The soil temperature at 20 cm was almost the same at both sites. In terms of energy fluxes, it was found that the highest latent heat flux of evaporation was in wetland. Sensible heat flux was higher in the pasture. The flux of heat into the ground is bigger during the morning and evening hours on the wetland, however ground heat flux was higher in the pasture during the day.
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The effect of moisture in building - causes, consequences, possible solutions
STUDENÁ, Sandra
This bachelor's thesis deals with the issue of humidity in building constructions in terms of modern and historical architecture and its impact on building constructions. In a theoretical part, there are described all symptoms, causes and sources of moisture in buildings, negative effects of moisture for building construction and the most frequent possibilities of research and moisture diagnosis. Next, there are described safeguards against water, dehumidification methods of construction and the possibility of protection of the building against moisture in historic buildings. The second (practical) part of this thesis deals with the exploration of a selected building object. Here is investigated the cause of moisture masonry, on the base of the sampling masonry examines the degree of wall humidity, proposes measures to prevent access of moisture into the building and construction method of building dehumidification.
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Effect of environmental factors on the rate of cellulose decomposition in selected wetlands
FILIPOVÁ, Marie
This thesis is a part of the project No. P504/11/1151 of The Grant Agency of the Czech Republic, entitled The role of plants in the greenhouse gas budget of a sedge fen. In this thesis, the decomposition rate of a standard material (cellulose) is assessed for three types of wetlands, which differ in water regime. The study took place at two localitites of marginal wetlands with standing water (Mokré louky near Třeboň, Záblatské louky), two floodplain localities (Brouskův mlýn and Hamerské louky) and two peatbog localities (intact and mined parts of Červené blato, respectively). The intensity of decomposition processes was compared among the sites using the method of cellulose bags. The bags were made from nylon nets, each was divided into five pockets and a cellulose strip was inserted in each pocket. A filter paper was used as the cellulose. These bags were placed vertically into the soil profile so that the upper sample was lying on the surface and the lowest was at the depth of 25 cm below the surface. At each locality four places were randomly selected and four replicate bags with cellulose were placed on each of them. In total 96 bags were put in place, which makes 480 cellulose samples. Two experiments, differing in length of exposition, were carried out in 2013. The samples were taken from the field sites after three and five weeks of exposure (experiment No. 1 and 2, respectively). In both experiments, the decrease in ash-free dry matter was the highest at Hamerské louky. The lowest decrease in ash-free dry matter was in the mined part of Červené blato peatbog. In the second experiment the decrease of the ashless dry matter was more noticable, which was caused by the prolonged exposure. The lowest decrease of ash-free dry matter was found in depths of 0 - 10 cm below the soil surface at all the sites.
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Climatic parameters during the winter housed sheep
ŠKOPEK, Zdeněk
The topic of the bachelor work is concentraded on the assessment of influence of microclimatic parameters during the winter housed sheep. Measure the basic microclimatic parameters monitored in the barn and basic utility properties of the animals. Study group consists of three breeds of sheep, which considers the effect of measured values on their performance. A subsequent comparison of the breeds themselves.
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The quality of food wheat in South Bohemia
MACHOVCOVÁ, Dana
The quality of food wheat is annually evaluated with all deliveries of agricultural primary production in the chosen farming enterprise. During the years 2008 - 2012 particular characteristics with files of 42 - 222 samples were determined, except for the year of 2009 when only one supply was technologically incorporated to food wheat. Countrywide observation of the quality of food wheat is executed in Agricultural research institute Kroměříž, Ltd and in Agrotest fyto, Ltd. It is co-financed by Ministry of Agriculture within a functional task which follows the project of Ministry of Agriculture number QG50041 Factors of quality and safety with food grains (2005-2010). Harvest samples, obtained from producers in time span 2008-2012, were represented by files of 500-1035 samples. Characteristics which influence the quality of the grains as well as criteria and methods of the evaluation of food wheat were described. Their applications in Agrotest fyto, Ltd and under operating conditions in ZZN Pelhřimov a.s. were given. Average values of observed parameters were calculated from the results of each testing in the laboratory of the detached post Záhoří and consequently compared with countrywide norm and the norm of South Bohemia. The quality of food wheat grains in years 2008-2012 showed a large-scale variability in particular parameters both at countrywide level and in South Bohemia as well as in chosen farming enterprise. Final quality was considerably influenced by course of weather annually.
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Analysis of microclimate of the stands with different management.
ŠACHL, Jiří
Proposed bachelor thesis deals with the issue of the microclimate creation in the vegetation cover. The main focus was put on monitoring of temperature and humidity regime, and solar energy fluxes due to Bowen ratio. Several microclimatic parameters was monitored in four different biotopes with different microclimate regime (red clover, winter wheat, potato and grassland), during the growing season and relied to the different agricultural management.
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The quality of barley for food and feeding
KADLECOVÁ, Helena
By the purchasing of malting barley and fodder barley from collective farms, companies, smaller enterprises and also independently farming farmers the quality is evaluated by indicators which are determined by valid standards. A range of factors participating in resulting grain quality. The quality criterions and laboratory methods were created in order to specify the quality of barley in the company laboratory ZZN Pelhřimov. Average values of the results of analysis of malting barley in years 2008 - 2012 were compared wiht the national average which its yearly evaluated by ČÚPS in Brno. In addition to the genetical base the malting quality is mostly influenced by the sequence weather in individual years.
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Rating combine harvesters John Deere 9880 and New Holland CR 9080 at harvest of cereals and oilseed rape.
WEBER, Michal
The aim of this thesis was to compare the activity and quality of work of the combine harvester New Holland CR 9080 and John Deere 9880 STS at harvest of cereals and oilseed rape and their simple economic evaluation. The thesis was focused on comparing losses and influence of moisture of harvested crops on the size of the losses, on the quality of crushing and the spreading of plant residues. Then the inf luence of moisture of harvested crops on the quality of crushing and the spreading of plant residues, analysis of performance and consumption of diesel were compared.
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The influence of incubation conditions on the evolution length of the selected Phasmatodea species
ŠIŠKOVÁ, Žaneta
The aim of this thesis is to compare the length of an incubation in eight types of incubators and to evaluate whether the different types of substrate have an influence on incubation pace of the selected Phasmatodea species. There were used Ramulus sp. species for this kind of experiment. The main criteria for selection of these Phasmatodea species were their relatively short incubation period, their easy breeding and availability. The incubation containers were placed in room conditions and regularly humified. The datalloger was used for humidity and temperature measurement. The shortest incubation period of 46 days was measured in the {\clqq}water bath`` incubator with an average relative humidity of 100 per cent. The longest incubation period of 56,5 days proved to be in the {\clqq}sand compost`` incubator with an average relative humidity of 70,9 per cent. The results of this thesis could help breeders of this kind of insect to breed in easier and especially more effective way.
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