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Vliv úbytku sněhu na dekompozici a respiraci půdy

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Názov: Vliv úbytku sněhu na dekompozici a respiraci půdy
Autori: Klárová, Anežka
Prispievatelia: Vindušková, Olga, Angst, Gerrit
Informácie o vydavateľovi: 2025.
Rok vydania: 2025
Predmety: cyklus uhlíku, carbon cycle, snow manipulation, global warming, CO2 flux, tok CO2, opadové sáčky, manipulace sněhem, litterbags, albedo, globální oteplování
Popis: The global decline in snow cover affects biochemical processes in soil, potentially leading to changes in the carbon cycle. This thesis describes global and regional snow cover trends and summarizes current knowledge and methods used in decomposition and soil respiration research. Soil biochemical processes during winter depend on the frequency of freeze-thaw cycles, litter input, and the activity of soil biota. However, the results of individual studies are inconsistent due to varying experimental conditions across ecosystems and the lack of standardized methodical approaches. Decomposition and soil respiration contribute to the annual carbon exchange even under reduced snow conditions and may alter the annual carbon balance between soil and the atmosphere. The objective of the practical part of this thesis was to study the effect of snow reduction on winter soil temperature, decomposition, and respiration at Králický Sněžník. An observation of plots with different snow depth combined with snow manipulation experiment was conducted in two winters, 2023 and 2024. Significantly lower decomposition was found with lower snow depth in plots measured in spring 2024. Significantly lower soil respiration was found with lower snow depth in plots measured in winter 2024. Decomposition was influenced by...
Druh dokumentu: Bachelor thesis
Jazyk: English
Prístupová URL adresa: http://www.nusl.cz/ntk/nusl-686190
Prístupové číslo: edsair.od......2186..b43f4924bdf869e3b0c828a8b8258b5e
Databáza: OpenAIRE
Popis
Abstrakt:The global decline in snow cover affects biochemical processes in soil, potentially leading to changes in the carbon cycle. This thesis describes global and regional snow cover trends and summarizes current knowledge and methods used in decomposition and soil respiration research. Soil biochemical processes during winter depend on the frequency of freeze-thaw cycles, litter input, and the activity of soil biota. However, the results of individual studies are inconsistent due to varying experimental conditions across ecosystems and the lack of standardized methodical approaches. Decomposition and soil respiration contribute to the annual carbon exchange even under reduced snow conditions and may alter the annual carbon balance between soil and the atmosphere. The objective of the practical part of this thesis was to study the effect of snow reduction on winter soil temperature, decomposition, and respiration at Králický Sněžník. An observation of plots with different snow depth combined with snow manipulation experiment was conducted in two winters, 2023 and 2024. Significantly lower decomposition was found with lower snow depth in plots measured in spring 2024. Significantly lower soil respiration was found with lower snow depth in plots measured in winter 2024. Decomposition was influenced by...