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National Repository of Grey Literature 1 records found  Search took 0.01 seconds. 
The Methane flux (CH4) from willow (Salilx sp.)
 JANEBOVÁ, Klára
The aim of the thesis was to study the methane flux (CH4) from crack willow (Salix fragilis) and bay willow (Salix pentandra) at the ecosystem station Wet Meadow by Třeboň (49°01 N; 14°46 E). The research was carried out in May 2016. Methane is one of the important greenhouse gases, which plants can emit into the atmosphere. Neither the fluxes of methane from willows nor the factors influencing them were so far sufficiently monitored. The thesis became a part of the whole year's monitoring of these fluxes, carried out by the Global Change Research Institute of the Czech Academy of Sciences, under the lead of expert consultant Dr. rer. nat. Mgr. Macháčová. The fluxes of CH4 were measured with the help of manual static chamber systems located in three height-levels and online portable laser gas analyser. The fluxes were processed, statistically evaluated and coherent tables and charts were created from the results. Based on these results we can conclude, that all examined trees have released CH4 and CO2 from their trunks, however no significant statistical difference between morning and afternoon fluxes was measured. S. fragilis was emitting higher amounts of CH4 and CO2 than S. pentandra. At the same time emissions dramatically decreased along with decreasing trunk height. Therefore the highest emissions were detected directly at the ground level. Moreover, the emissions of CH4 and CO2 were measured from the soil as well.
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