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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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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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Hodnocení aberace vybraných ploch katastru obce Vlkov
Havlát, Martin
The subject of this research is a level of aberration of soil on selected sites in the land register of Vlkov u Osové Bítýšky village. During a Complex soil survey (1967/1968) were collected three samples In 1966 and 1967, in this territory. From these samples were selected data from texture analysis pH and humus. The old soil sampling sites were re-localized and from the very spots, new samples were taken from the depth of approximately 75 cm in order to gain current results. These new samples were analyzed in a laboratory and these results were compared with the 50 years old ones. This allowed us to evaluate changes in soil on the selected sites.
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Vliv způsobu zpracování na dynamiku organického uhlíku v půdě
Cimová, Dagmar
Diploma thesis is aimed at evaluation of soil organic carbon dynamic and humic substances quality in monoculture of spring barley and Norfolk crop rotation system. Further we followed the influence of different soil tillage system (minimalization and conventional tillage) on to humus and humic substances dynamic. Gleiyc Fluvisol was classified and observed during 2017 – 2018 within field long term experiments of Mendel University in Brno at locality Žabčice. Measured data set was evaluated using program StatisticaCZ12, software (StatSoft software Inc., Tulsa, Oklahoma, USA). Obtained results shown that statistically significant differences between Norfolk and monoculture were in following parameters: organic carbon content, humus content and humic substances content. Higher values were in Norfolk crop rotation system.
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Kvalifikace primární půdní organické hmoty podle rychlostní konstanty oxidace v půdách s odlišným systémem zpracování
SLÁDKOVÁ, Jana
Soil organic matter is considered to be one of the most frequently discussed topics among professional associations and scientists. Both the content and the quality of soil organic matter radically influences not only the physical and chemical properties of soils but also the ecosystem services that soils provide. Many methods have been originated regarding the evaluation of quality and quantity of soil organic matter during scientific research. It seems that most of the methods employed in agricultural practices are encumbered by certain shortcomings. Principles of newly discovered methods of evaluating soil organic matter are described in this thesis. These principles proceed from dividing the portion of organic material into stable and unstable organic matter. We evaluated the quality of organic material from different sampling techniques (e.g. ploughing, disc harrow, deep tillage). The results have shown that different ways of cultivation influence the amount of quantitative and qualitative parameters of soil organic matter. For example we discovered the impact of cultivation on the quantity of soil organic carbon or on the quality of primary soil organic matter
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Preparation of revitalization study for small water course
KAHUDA, Václav
This diploma thesis deals with returning of modified troughs of small watercourses to the natural state - revitalisation. The general idea of the river beds and water environment revitalisation will be explained in the theoretical part. It will also deal with its history, development and practical application. The practical part will contain an own project creation. It is a project of the adjusted small watercourses bed revitalisation in the level of study. A section of a fine river was used for this thesis. It is called Žďárský Stream and it belongs to the cadastral area Žďár near the Kaplice. Individual parts of the river and its basin will be mapped in this work. It will also consider the hydrological and geographical conditions and it will propose a technical solving for a local revitalisation of the adjusted river bed. It will ínclude natural factors support, the ecological-morphological improvement, the migrational permeability and other links to the river environment.
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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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Vliv technologie kompostování biologicky rozložitelných odpadů na kvalitu kompostu
DVOŘÁK, Zdeněk
The thesis deals with composting and ways of handling biodegradable waste and biodegradable municipal waste. It explains the terms related to composting and processing of BW and BMW and clarifies the difference between humus and primary organic matter and its composition. Furthermore, the thesis covers qualitative and quantitative features of compost, raw material composition of the dump, and factors influencing the process of decomposition itself. The practical part of the thesis describes the quality of the compost from the municipal composting plant Písek. This part also includes a description of the composting plant and a description of the composting process. The main part and the goal of the thesis is to determine the ion-exchange capacity T according to Sandhoff and to suggest the optimal composting technology in the Municipal composting plant Písek.
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Kvalifikace primární půdní organické hmoty podle rychlostní konstanty oxidace v půdách porostů energetických rostlin
SKOBA, David
This Bachelor thesis is focused on monitoring the yield parameters of selected energy plants (Elymus elonganus, Phalaris arundinacea L., Miscanthus × giganteus). First part of the work was performed at the experimental site of the Faculty of Agriculture of the University of South Bohemia in České Budějovice, where long-term experiments were carried out to look at the yields of these plants. I was observing the yield of crops grown for the purpose of incineration, which are harvested once a year before the beginning of the growing season. Research has shown that on a 4-year average the most profitable species is Miscanthus × giganteus. The second practical part of my work was the sampling and analysis of soil samples from these stands and, for comparison, the sampling of soil under permanent grassland. In the laboratory at the Department of Agroecosystems the samples were modified and examined in terms of the quantity and quality of soil organic matter. The analysis shows that the content of humus in soils with energy plants is lower in comparison to the content of these substances in soil under permanent grassland. There were no significant differences in the observed values of the velocity constants of the oxidation of the primary soil organic matter.
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