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Physical-geographical aspects of vegetation succession and soil development with focus on abandoned mining sites
Zamazalová, Kateřina ; Chuman, Tomáš (advisor) ; Zádorová, Tereza (referee)
The thesis focuses on the background research of pedogenesis and vegetation succession within a primary succession. An attention is paid to abandoned mining sites. The role of a rock sub-soil is emphasized. The found facts was examined on samples, where the dependency of pH and amount of organic carbon in soil on substrate and type of vegetation was examined. Statistically significant differences in soil and vegetation development on different substrates were not found, however there was observed the influence of carbonate substrate from neighborhood. This substrate allowed in a sililic quarry a formation of nutrient rich vegetation similar to that described in limestone quarries. Humidity of the soil and groundwater table depth were suggested as more determining in vegetation succesion, especially in life forms domination. Primary successsion was influenced by neighborhood of the area in many aspects.
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Steppe or woodland? Ecological Conditions of Formation and Evolution of Chernozems in Central Europe
Vysloužilová, Barbora ; Šefrna, Luděk (advisor) ; Kalvoda, Jan (referee) ; Havlicek, Elena (referee)
Chernozem became the crucial soil for the beginnings of soil science through the work of Dokuchaev from 1883. Since then the genesis of chernozems in Central Europe has raised many questions among soil scientists, botanists and paleo-environmentalists. While in Eastern Europe chernozems have been described as zonal soils, that are typical for continental steppe and forest-steppe areas, there are areas in Central Europe which are predisposed by their climatic characteristics to the presence of woodlands. The goal of this dissertation is to enrich the discussion about the genesis of chernozems by restoring the environmental conditions that were prevalent during the formation of chernozem soils in Central Europe. Chernozems are usually developed on loess with a very thick and dark organic surface which passes directly to a calcareous horizon. The organic matter underwent a polymerization in dependence on climate contrasts. However, in Central Europe, the climatic characteristics of the areas of chernozems are a bit different. These chernozems are supposed to have been formed under the climatic conditions that dominated Central Europe during the Late Glacial and the Early Holocene. The climatic nuances may contribute to the explanation of the differences in distribution of chernozems ("drier") and...
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Soil organic matter accumulation and humification during pedogenesis
Inogamova, Malika ; Frouz, Jan (advisor) ; Bartuška, Martin (referee)
Soil is comprised of minerals, SOM , water, and air. Soil development is caused by climate and living matter acting upon parent material (weathered mineral or organic matter from which the soil develops), as conditioned by topography, over time. SOM is a dynamic component of the soils system. Plant productivity is effected by the SOM. SOM provide nutrients and habitat to the organisms living in the soil, including plants, roots and SOM also binds soil particles into aggregates and improves the water holding capacity of soil. SOM is a product of biological decomposition that affects the chemical and physical properties of the soil and its overall fertility. Humus is only partly metabolized by soil organisms but improves the physical and chemical properties of soil. It consists of different humic substances: fulvic acid, humic acid, and humin. Soil is a solid material that results from the interaction of weathering and biological activity on the parent material or underlying hard rock. The fundamental pedogenic processes, used also as a criterion for classifying soils, is associated with SOM accumulation. We discuss the nature and interrelations of the SOM humification and accumulation processes during pedogenesis and the environmental factors on pedogenic processes influencing the rate of SOM...
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Key factors in soil organic matter accumulation
Vindušková, Olga ; Frouz, Jan (advisor) ; Borůvka, Luboš (referee) ; Šarapatka, Bořivoj (referee)
Soil organic matter (SOM) is highly important for soil quality and the global carbon cycle. SOM content is influenced by a complex interplay of many different factors such as time, climate, parent material, vegetation, and others. The effect of time is often studied using the chronosequence approach using a set of study sites differing in age but comparable in other soil-forming factors. The effect of other factors can be studied by comparing two or more chronosequences. An important assumption of these approaches is that the SOM quantification methods produce comparable results both among sites of each sequence and among different sequences. In this thesis, I explored the key factors in SOM accumulation and dealt with SOM quantification methods. I studied SOM accumulation in two model situations - in post-mining sites after open-cast coal and oil shale mining and in landslides in the Western Carpathians. The results of this thesis are summarized in one book chapter accepted for publication and four papers, out of which three have been published and one is prepared for publication in an international journal with impact factor. The key factor affecting the rate of SOM accumulation after a major disturbance is time. The accumulation rates found in the first 40 to 100 years in both post-mining sites...
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Upper Pleistocene environmental dynamics in central Europe: multidisciplinary research of loess/paleosols sequences and lacustrine sediments
Hošek, Jan
The principal goal of this thesis was to provide relevant information on the spatiotemporal dynamics of erosion-sedimentation and weathering processes in the last climatic cycle and to interpret the obtained data in the context of European paleoenvironmental development. Representative sequences of loess, paleosols and lacustrine sediments from the area of the Bohemian Massif, the Carpathian Foredeep, the the Vienna Basin and the northern edge of the Panno-nian Basin were investigated using a wide range of instru-mental tools and paleontological methods. A uniform analytical approach applied to these sedimentary facies has provided ample new information about the paleoclimatolog-ical and paleoenvironmental development of East-Central Europe - an important region in the transition zone from oceanic to continental macro-climatic settings. The individu-al studies included in this PhD thesis cover the complete period of the Upper Pleistocene (MIS 5-2; ~130-12.7 ky BP) and are presented as separate chapters in the order of the superposition of strata. Chapters III/1-3 deal with the results of research into six loess/paleosol sequences (LPSs) situated in the Central Bohemian Massif, throughout the Moravian Valleys, and at the northwest and north edge of the Pannonian Basin. A detailed paleoenvironmental...
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Key factors in soil organic matter accumulation
Vindušková, Olga
Soil organic matter (SOM) is highly important for soil quality and the global carbon cycle. SOM content is influenced by a complex interplay of many different factors such as time, climate, parent material, vegetation, and others. The effect of time is often studied using the chronosequence approach using a set of study sites differing in age but comparable in other soil-forming factors. The effect of other factors can be studied by comparing two or more chronosequences. An important assumption of these approaches is that the SOM quantification methods produce comparable results both among sites of each sequence and among different sequences. In this thesis, I explored the key factors in SOM accumulation and dealt with SOM quantification methods. I studied SOM accumulation in two model situations - in post-mining sites after open-cast coal and oil shale mining and in landslides in the Western Carpathians. The results of this thesis are summarized in one book chapter accepted for publication and four papers, out of which three have been published and one is prepared for publication in an international journal with impact factor. The key factor affecting the rate of SOM accumulation after a major disturbance is time. The accumulation rates found in the first 40 to 100 years in both post-mining sites...
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Dekompozice dřeva v horských temperátních lesích a jeho dopad na pedogenezi
Paták, Ondřej
This thesis deals with the monitoring of the impact of decaying wood on the soil characteristics and the related development of the soil profile. The subject of the research is the soils in the Žofínský prales National Nature Reserve in Novohradské mountains, with the predominant European Beech (Fagus sylvatica L.). Samples taken under the decaying stems are compared with the control samples of soils with the predominant leaf layer on the surface. In the soil beneath the beech stems, a significantly higher carbon content, higher pH, higher nutrient concentrations, lower exchange acidity, and mostly lower Al and Fe content were found. Decaying wood most affected the horizon A, more intense podzolization was not detected unambiguously.
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Key factors in soil organic matter accumulation
Vindušková, Olga
Soil organic matter (SOM) is highly important for soil quality and the global carbon cycle. SOM content is influenced by a complex interplay of many different factors such as time, climate, parent material, vegetation, and others. The effect of time is often studied using the chronosequence approach using a set of study sites differing in age but comparable in other soil-forming factors. The effect of other factors can be studied by comparing two or more chronosequences. An important assumption of these approaches is that the SOM quantification methods produce comparable results both among sites of each sequence and among different sequences. In this thesis, I explored the key factors in SOM accumulation and dealt with SOM quantification methods. I studied SOM accumulation in two model situations - in post-mining sites after open-cast coal and oil shale mining and in landslides in the Western Carpathians. The results of this thesis are summarized in one book chapter accepted for publication and four papers, out of which three have been published and one is prepared for publication in an international journal with impact factor. The key factor affecting the rate of SOM accumulation after a major disturbance is time. The accumulation rates found in the first 40 to 100 years in both post-mining sites...
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