Bowen ratio (ß) was determined to the adult spruce stand (Picea abies (L.) Karst.) at the ecosystem station of Rájec (Drahanská vrchovina Highlands, the Czech Republic) during the growing season (May -- October) in 2014. Analysis of the ß values was made for the values specified in the light part of the day characterized by positive values of net radiation of the spruce stand. Determined ß values showed considerable variability. Positive ß values were found out in a normal and inverse stratification of the atmosphere; negative values for unstable atmospheric conditions. Positive ß values were determined regardless of the radiation conditions, particularly when the difference in air temperature was < 0.8 °C (or 1.0 oC) and the difference in the relative air humidity inside the crown of a spruce forest layers was < 0.8%. The average value of ß under these conditions was 0.98. A detailed analysis of the ß values showed that the ß values were significantly affected by the actual microclimate conditions. There was found out by the detailed analysis of the Bowen ratio values in the adult spruce stand at the ecosystem station of Rájec during the growing season (May -- October) in 2014 that using Bowen ratio method for the determination of the actual evaporation of the adult spruce stand has many limiting, microclimate, factors, and it is therefore suitable for determination of the stand actual evaporation.

The aim of the thesis was to evaluate the stand microclimate within fir-beech stand planted in the gap under the adult spruce stand canopy protection at the ecosystem station of Rájec (Drahanská vrchovina Highlands, the Czech Republic) during the growing season (May -- October) in 2014. On the fir-beech stand incident on average for the whole growing season only 11 % of photosynthetically active radiation incident on the adult spruce stand. Values of air temperature were decreasing in the vertical profile of fir-beech stand under the adult spruce stand canopy protection toward to the ground. Air temperature in the height of 2 meters above the ground was lower in the fir-beech stand in the gap compared with the adult spruce stands. The relative air humidity in the height of 2 meters above the ground was higher in the fir-beech stand compared with the adult spruce stands. Total precipitation sum was 447 mm at the ecosystem station of Rájec after the growing season (May -- October) in 2014, which corresponds to the long-term averages for this locality. Different distribution of rainfall during the growing season were found out. Total throughfall sum was higher in fir-beech stand in the gap compared with the throughfall sum in the adult spruce stand -- the difference was almost 17 %. Analysis of the stand microclimate within the fir-beech stand under the adult spruce stand canopy protection showed that conversion of forest monoculture on the forest close to the nature by the trees planting in forest gaps is useful due to appropriate light and moisture conditions in the gap.

Extensive investigation of ash dieback impact on different rural vegetation types (solitaires, scattered plantations, riparian stands, scree- and ash-alder alluvial forests) was performed in the Lusatian Mts. (the Czech Republic) between 2011 and 2013. The rate of ash dieback and 27 environmental variables were investigated in 80 research plots with a total of 1045 evaluated trees. The developed model (GLM) explained ca 27% of the disease variability. Particular models for each vegetation type importantly differed from each other and explained 28--46% of the disease variability. The variables that positively affected the disease impact included the host crown area, ash area and rate of ash in the stands, tree layer area, canopy closure, north aspect, shrub and herbaceous layer canopy, vertical heterogeneity and standard deviation of TPI. Tree height, the distance and damage of the nearest host as well as the water source distance, slope and its standard deviation affected it negatively. The coincidental attack of the trees by Armillaria sp. and Hylesinus fraxini positively affected the disease progress, whereas the presence of Nectria sp. and Aceria fraxinivorus conclusively decreased progress, most likely via the induction of secondary metabolites. The highly conclusive regression of ash dieback on the number of days with an air humidity of >95% between 6--11 a.m. in the main period of ascospore spread was identified. Because the air humidity near the ground was highly affected by local factors, a GLM model explaining the variability of air humidity with that of investigated factors was developed. This model explained 77% of the variability attributed to air humidity, local factors (TPI and SD of TPI, aspect, slope, altitude, distance from open water, tree and shrub layers canopy, tree stand height, etc.) greatly affected the disease impact related to air humidity. The landscape form was identified as a factor (most likely via air humidity) that affects the impact of the disease -- for example, the stands on mountain tops and slopes were less affected than the stands in valleys. The vegetation types highly differed in the disease extent. In general, the solitaires and scree forests were significantly less damaged than mixed ash-alder forests and riparian stands. The smaller stands were less affected than the more extended, the stands enclosed in canopy of other forests were less damaged than comparable vegetation in open landscapes and stands with higher humidity (riparian stands and mixed ash-alder forests) were more damaged than those without water. The outcome clearly supports the possibility of development and usefulness of appropriate forest and landscape management of the disease.

This thesis is focused on the effect of glue to bonding strength at DTD-L and ABS edge for increased moisture and heat interaction. This problems is concerned not only furniture, which is located in rooms with increased moisture, as are bathrooms and kitchens, but also furniture, which is exposed to these conditions in logistics during transport, storage etc. In this regard selection of right glue has a great impact on produce quality. This work is divided into two parts, theoretical and practical. There is description of methodology and formal view of problematics in the theoretical part. Experimental measurement of temperature and moisture conditions in interior and exterior are introduced in the practical part. Surface material DTD-L was used in practical part, when was tested strength of glued joints with using PUR adhesive. The samples were burden with increased moisture 90 % and 70 % and with temperatures from 25 ° C to 80 ° C. Subsequently was tested strength of gluent joints with using method of angle pressure shear angle-wise 45 ° and a peeling method angle-wise 90 °. The results were processed, analyzed and evaluated.

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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.

In Czechoslovakia 1 078 000 ha of agricultural land were drained. At present, the drain systems located in these areas are at the end of their lifetime because of unsatisfactory maintenance of these systems. This project deals with evaluation of changes in functionality of the drain systems used in arable land in Vysočina. In examined territory of the region Vysočina (except the district Pelhřimov) there were accidentally chosen testing spaces where the drain systems fill 25 -75% of surface area and where the analysis of vegetative factors and humidity was done. As a source for the vegetative factors and humidity, there were used satellite photographs Landsat. The aim was to discover whether the vitality of vegetation and humidity in the part of land with the drain systems and without the drain systems differ.

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This diploma thesis deals with the evaluation of CLAAS TUCANO 440 and CLAAS TUCANO 450 combine harvesters for the harvest of cereals and winter rape. It evaluates problems in terms of losses, depending on grain humidity, quality of crushing and spreading plant residues. The thesis sets basic performance and is supplemented by a simple analysis of investment and operating costs. The methodology of the solution was based on own measurements, information obtained from the owner, literature and agricultural standards.