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The attitudes and knowledge of pre- and in - service teachers on the topic of plant role in human environment under the global climate changes
ŠEVČÍKOVÁ, Kristýna
This bachelor thesis deals with the issue of mutual interactions between vegetation cover and the atmosphere in the period of global climate change. The aim of this work is to determine the level of knowledge of teachers and students of science teaching together with their views on the teaching of this topic in practice at primary school and in out-of-school education. The literary introduction outlines the issue of mutual interactions between vegetation and atmosphere, together with the anchoring of this topic in the framework educational program. The practical part of this work comments on the results of a questionnaire for students of science teaching and the results of a questionnaire designed for science teachers. Based on the results of this survey among students and teachers, a teaching unit was designed for use in out-of-school education at the primary school level.
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Freshwater wetlands as a biogeochemical archive: Temporal changes in climate and environmental records
Zemanová, Leona ; Novák, Martin (advisor) ; Mihaljevič, Martin (referee) ; Hojdová, Marie (referee)
Worldwide, peatlands cover an area of 4.106 km2 . Plant primary production dominated over organic matter decomposition and enabled organic matter to accumulate during the last 11 000 years. Peatlands represent a reservoir of atmospheric carbon and they are a useful scientific tool for reconstructions of historical atmospheric pollution. The first part of the thesis focuses on peatlands as a dynamic carbon reservoir under predicted climate change that would influence carbon cycling and emissions of greenhouse gases into the atmosphere. Three methodological approaches were used - a mesocosm laboratory incubation, a transplant experiment and in situ gas flux measurements. The laboratory incubation studied the response of peat samples from temperate (Velké Dářko, Czech Republic) and boreal (Stor Åmyran, Sweden) zone to a temperature increase, water table decrease and their combination. Today, the warmer site exhibits ~14 times higher CH4 production potential than the colder site (28 mg m-2 hr-1 at VD, and 2 mg m-2 hr-1 at SA). Both sites respond differently to temperature increases. Changes in methane production were up to 9 fold due to different temperatures. A gradual decrease of water table level from 2 to 14 cm below the peat surface had a much stronger effect, VD exhibited a decrease in methane...
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Determination of atmospheric pollution from satellite data
Hladká, Anna ; Kolář, Jan (advisor) ; Potůčková, Markéta (referee)
Determination of Atmospheric Pollution from Satellite Data Abstract The subject of this project is to determine air quality in Prague and the surrounding area based on satellite images and ground measurements data. The goal is to derive equations for calculating an amount of a specific pollutant over the entire area of the image. The first part of the thesis is devoted to the general theory and literature review related to this topic. The methodological part describes the steps of the procedure to handle the task, including e.g. converting satellite DN values to the radiometric values, atmospheric correction, regression analysis and mapping of the area of interest. Subsequently, the results are visualized, compared to the traditional interpolation methods and discussed. Finally, the contributions of this project and possible improvement of work on the topic are presented. Key words: Air pollution, Satellite images, Atmospheric correction, Regression analysis, Prague and surroundings
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Freshwater wetlands as a biogeochemical archive: Temporal changes in climate and environmental records
Zemanová, Leona ; Novák, Martin (advisor) ; Mihaljevič, Martin (referee) ; Hojdová, Marie (referee)
Worldwide, peatlands cover an area of 4.106 km2 . Plant primary production dominated over organic matter decomposition and enabled organic matter to accumulate during the last 11 000 years. Peatlands represent a reservoir of atmospheric carbon and they are a useful scientific tool for reconstructions of historical atmospheric pollution. The first part of the thesis focuses on peatlands as a dynamic carbon reservoir under predicted climate change that would influence carbon cycling and emissions of greenhouse gases into the atmosphere. Three methodological approaches were used - a mesocosm laboratory incubation, a transplant experiment and in situ gas flux measurements. The laboratory incubation studied the response of peat samples from temperate (Velké Dářko, Czech Republic) and boreal (Stor Åmyran, Sweden) zone to a temperature increase, water table decrease and their combination. Today, the warmer site exhibits ~14 times higher CH4 production potential than the colder site (28 mg m-2 hr-1 at VD, and 2 mg m-2 hr-1 at SA). Both sites respond differently to temperature increases. Changes in methane production were up to 9 fold due to different temperatures. A gradual decrease of water table level from 2 to 14 cm below the peat surface had a much stronger effect, VD exhibited a decrease in methane...
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Studie výskytu persistentních organických látek v ovzduší a jejich depozice na území České republiky: Díl 1: Persistentní organické polutanty v ovzduší a půdě na území ČR
Univerzita Karlova v Praze, 1. lékařská fakulta Ústav hygieny a epidemiologie, Praha ; AXYS - VARILAB, s.r.o., Vrané nad Vltavou ; Černá, M. ; Bencko, V. ; Minářová, J. ; Jech, Libor
Předmětem práce je studium obsahu POP v ovzduší a v půdě na různých místech v ČR. Dále byl proveden biologický monitoring expozice obyvatelstva ČR těmto látkám. V průběhu řešení úkolu bylo analyzováno 50 vzorků ovzduší na 17 různých lokalitách, zahrnujících průmyslové, residenční, venkovské a pozaďové typy prostředí. Na většině míst byla provedena dvě měření v létě a v zimě. Na měřícím místě v Praze Libuši byl obsah POP v ovzduší sledován celoročně.
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Studie výskytu persistentních organických látek v ovzduší a jejich depozice na území České republiky
AXYS - VARILAB, s.r.o., Vrané nad Vltavou ; Jech, Libor
Předmětem řešení projektu je získání základních informací o výskytu persistentních organických látek (POP) v ovzduší a jejich depozici na území České republiky. V roce 2001 byl hlavní objem práce věnován analýze vzorků ovzduší a půd z různých regionů republiky s cílem mapovat jejich výskyt a zjišťovat souvislosti s jejich zdroji. Dále byla analyzována zbývající část vzorků ovzduší a půd z regionu ČR a bylo provedeno podrobnější studium zatížení prostředí specifických lokalit emisemi POP a příspěvkem dopravy k celkovému zatížení prostředí těmito škodlivinami. Zpráva se omezuje jen na popis technických aspektů řešení a získaných výsledků. Interpretace výsledků a jejich hodnocení je součástí souhrnné zprávy za celou dobu řešení.
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