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Soil carbon sequestration: ways and potential
Valentová, Mariana ; Vindušková, Olga (advisor) ; Bartuška, Martin (referee)
By choosing appropriate practices, carbon can be stored in the soil as a means of mitigating (mitigating) climate change. The paper clearly summarize our current understanding of the principles (e.g., soil organic matter, level of C saturation) anf factors (e.g., parent rocks, climate, human) influencing the potential of soils to sequester carbon and its importance in terms of implemeting effective mitigation measures. This is followed by an introduction of method for estimating the carbon sequestration capacity of soils and its relevance to sequestration potential is discussed. The main focus of the paper is the comparison of the land use changes (e.g., forest or peatlands restoration) and land management (e.g., use of crops rotation, no-till agriculture) that can achieve soil carbon sequestration, including the quantitative estimates of their sequestration potential. Finally, there is summary of the estimates of global sequestration potential of soils. Key words: carbon, soil, sequestration, mitigation, climate change, land-use, soil capacity
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Sequestration of soil organic matter in broadleaf and coniferous forests in soil at various stages of pedogenesis
Hüblová, Lucie ; Frouz, Jan (advisor) ; Vindušková, Olga (referee)
Soil organic matter (SOM) is an important component of the soil. SOM is responsible for availability of nutrients for plants and soil organisms, formation of soil structure and soils water-holding capacity. SOM is made up of organic matter (OM) of plant and animal origin at various stages of decomposition. SOM can be divided into several components called fractions. Fractions differ between each other in their resistance against decomposition. Main SOM fractions are: (1) free floating particulate organic matter (FPOM) and (2) OM bound to soil mineral surfaces in various ways (MAOM) - OH inside macro- and microaggregates and OM bound to silt and clay surfaces (S+C). It is assumed that MAOM fraction becomes C saturated during soil development and no more C can be sequestered in it. Other fractions, particularly FPOM, that are not dominant C storage in the initial stages of soil development become more important in the later stages and amount of C stored in them increases. However, there is scarcity of studies that examine this assumption. In this work I studied the hypothesis that soils in different stage of development will differ in the amount of C stored in different fractions. On top of that, this difference will be affected by the dominant tree species growing on the soil and the effect of tree...
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