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Vliv antropogenní činnosti na chemismus půdy
Tlušťáková, Adéla
Bachelor thesis is focused on studying of anthropogenic activities on soil chemical properties. The aim was to determine selected soil chemical properties (soil reaction, nutrients content and humus content and quality). The objects of study were: Modal Cambisol (Svárov) and Luvic Chernozem (Unčovice) under convetional tillage system and minimum tillage system. We came to the conclusion that more affected by anthropogenic activities were Cambisols than Chernozems.
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Carbon dynamics in the chernozem region after half a century of intensive cultivation
Juřicová, Anna ; Chuman, Tomáš (advisor) ; Dostál, Tomáš (referee) ; Maerker, Michael (referee)
Soils are vital for global food security and recently they have also received attention as a tool potentially mitigating climate change due to their ability to store large amounts of carbon (C) and provide other vital non-productive functions. However, several forms of degradation threat these functions. In agricultural soils, the decline of soil organic carbon (SOC) and soil erosion are two of the degradation processes. Soil erosion laterally redistributes large amounts of SOC in hilly agricultural landscapes. Lateral fluxes further impact the SOC storage in soils and indirectly modulate the vertical C fluxes between the terrestrial sphere and the atmosphere. The aim of this thesis is to investigate the long-term (> 50 years) regional SOC changes and analyze the impacts of soil redistribution in C dynamics in a hilly agricultural landscape. We consider soil redistribution via water and tillage as the main erosion agents. The study uses a comparison of recently resampled and legacy data from historical monitoring (the 1960s) together with coupled erosion and C dynamics modelling using the SPEROC-C model. The study is conducted in the chernozem region, south Moravia, the Czech Republic. Our results showed that the change in SOC content tends to be positive after more than 50 years. Moreover,...
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Anthracological analysis of chernozems in Czechia
Danková, Lenka ; Šefrna, Luděk (advisor) ; Zádorová, Tereza (referee)
This thesis deals with a pedogenesis of chernozems in Czechia (Central Europe). It solves a problem with open landscapes in Central Europe, further a role of man and fires in formation of this soils and relation between colour of chernozems and the content of black carbon. In my thesis is represented pedoanthracology as a method, which can be useful for future study of open landscapes in Central Europe and for an influence of man. In this thesis, there were also analysed two chernozemic soils with Raman spektrometry. It was found out, that chernozems was probably formed under forest-steppe vegetation with residue of post glacial steppe. Anthropogenic activity and fires could be new factors of pedogenesis of Central European chernozems. It was showed a strong relation between colour and content of BC. Raman spectrometry found a presence of BC in our analysed soils.
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Aberační změny u intenzivně obhospodařovaných černozemí
Indrová, Michaela
Diploma thesis: Aberration changes in chernozems as affected by their intensive exploitation is aimed at determination of selected physical and chemical soil properties, which indicate soil aberration. Introduction is aimed at the definition of soil, its important in the environment, and functions in the ecosystem. The experimental work is regarding aberration changes in Calcaric Chernozem (locality Velešovice, Czech Republic) as affected by agricultural exploitation. Soil properties were determined during the period 2013-2016. Results showed that studied soil has high aberration potential. Negative aberration changes included increasing of pedocompaction and bulk soil density, decreasing of porosity, structure stability, humus content, quality of humid substances and erosion.
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Soil archives of chernozems
Kolařík, Petr ; Strouhalová, Barbora (advisor) ; Trubač, Jakub (referee)
Soil archives provide valuable information on the past of the environment, in particular vegetation history (Costantini 2018). The aim of this thesis is study the feasibility of using the modern method of near-infrared spectroscopy to study the vegetation history of chernozems, using previously collected databases (Vysloužilová et al. 2015) to extract information from new sites along the grassland-woodland boundary in Minnesota, USA. The results are then analyzed and compared to known information and the results of more traditional approaches.
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Vliv antropogenní činnosti na chemismus půdy
Tlušťáková, Adéla
Bachelor thesis is focused on studying of anthropogenic activities on soil chemical properties. The aim was to determine selected soil chemical properties (soil reaction, nutrients content and humus content and quality). The objects of study were: Modal Cambisol (Svárov) and Luvic Chernozem (Unčovice) under convetional tillage system and minimum tillage system. We came to the conclusion that more affected by anthropogenic activities were Cambisols than Chernozems.
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Anthracological analysis of chernozems in Czechia
Danková, Lenka ; Zádorová, Tereza (referee) ; Šefrna, Luděk (advisor)
This thesis deals with a pedogenesis of chernozems in Czechia (Central Europe). It solves a problem with open landscapes in Central Europe, further a role of man and fires in formation of this soils and relation between colour of chernozems and the content of black carbon. In my thesis is represented pedoanthracology as a method, which can be useful for future study of open landscapes in Central Europe and for an influence of man. In this thesis, there were also analysed two chernozemic soils with Raman spektrometry. It was found out, that chernozems was probably formed under forest-steppe vegetation with residue of post glacial steppe. Anthropogenic activity and fires could be new factors of pedogenesis of Central European chernozems. It was showed a strong relation between colour and content of BC. Raman spectrometry found a presence of BC in our analysed soils.
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Vybrané fyzikální parametry hodnocení antropogenního zhutnění půd
Indrová, Michaela
Bachelor thesis is aimed at evaluation of anthropogenic changes in three selected subtypes of Chernozems. Object of study were -- Luvi-haplic Chernozem (Praha), Luvi-haplic Chernozem (Unčovice) and Calcaric Chernozem (Velešovice). We followed -- aggregates stability, texture, porosity, bulk density, total organic carbon content, soil reaction and buffering capacity. Results showed that studied heavy textured soils had high ability to pedocompaction. Agro-ecological limits were overstepped in Porosity, bulk density and total content organic carbon decreased. Exchangeable soil reaction also decreased and soil acidity increased. Buffering capacity again acids was also lower. Critical limits of pedocompaction were not overstepped but in subsoil horizons values were near to the limits.
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