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1

The methane emission measurements using relaxed Eddy technique - preliminary results from Rzecin wetland

100%
Chojnicki B. H., Siedlecki P., Rinne J., Urbaniak M., Juszczak R., Olejnik J.
Acta Agrophysica. Rozprawy i Monografie
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2010
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nr 2[179]
2
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pmoA based detection of methanotrophic bacteria in coal-bed rocks of the Lublin Coal basin

100%
Pytlak A., Kuzniar A., Stepniewska Z.
Acta Agrophysica
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2012
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tom 19
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nr 2
Methane is one of the most important greenhouse gases. In spite of its low mixing ratio (1775 ppbv), it is responsible for 20-30% of global warming. However, factors influencing methane fluxes to the atmosphere from different sources are still under debate. One of the most important elements of the methane cycle are methanotrophic bacteria. This unique group of Proteobacteria utilises methane at various levels, from atmospheric concentrations to several percentages, using molecular oxygen. Methanotrophs have been found in many terrestrial, aquatic and subsurface environments, there is however little information about methanotrophs connected with coal deposits. In the study, the presence of methanotrophic bacteria in coal–associated rocks of the Lublin Coal Basin (LCB) was confirmed by the methanotrophic activity tests of fresh and autoclaved samples from depths of 914 m and 997 m below the surface. Methanotrophs were also successfully enriched on nitrate minimal salts medium and identified based on the cloned pmoA sequences. It was found that methane-oxidising bacteria present in the LCB are highly similar to Methylosinus, Methylocys-tis and Methylocaldum species. It was assumed that biological oxidation may be one of the processes influencing methane concentrations in coalbeds and that rocks excavated with coal may serve e.g. as methanotrophically active covers preventing CH4 emission from landfills.
3

Results of research on inventory uncertainty of methane fugitive emission from coal mining system

100%
Gawlik L., Grzybek I.
Archiwum Ochrony Środowiska
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2003
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tom 29
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nr 1
4

Technical and economic aspects of the operation of a CHP set in the Waste Treatment Plant in Czestochowa

84%
Cupial K., Duzynski A., Grzelka J.
Teka Komisji Motoryzacji i Energetyki Rolnictwa
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2004
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tom 04
5

Methane flux from sediment into near-bottom water in the coastal area of the Puck Bay (Southern Baltic)

84%
Reindl A. R., Bolalek J.
Oceanological and Hydrobiological Studies
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2012
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tom 41
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nr 3
6

Winter methane emission from an Alpine open fen on Tibetan Plateau

84%
Zhu D., Chen H., Wu N., Wang Y., Luo P.
Polish Journal of Ecology
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2011
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tom 59
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nr 1
Methane (CH4) emission was measured from an open fen on the Zoige Plateau (3500 m a.s.l.) (the eastern edge of the Qinghai- Tibetan Plateau) during two winters of 2006 and 2007. Three dominant plant stands, including Carex muliensis Hand-Mazz. (CM), Eleocharis valleculosa Ohwif. setosa (Ohwi) Kitagawa.(EV) and Kobresia tibetica Maxim (KT) were chosen to be monitored. Winter CH4 emissions were roughly estimated to be 0.94 mg CH4 m–2 h–1. High spatialtemporal variations of the emission were found in this fen (the sequence of CM> EV> KT; 0.63 and 1.24 mg CH4 m–2 h–1 for 2006 and 2007, respectively). Factors involved in the spatial-temporal variation were: 1) water table in summer determining the winter amount of “old” CH4 stored in peat; 2) ice layer determining the release of CH4; 3) plant growth determining both the quantity of CH4 stored in peat and available substrates for CH4 production in winter. However, due to the homogeneity of freezing in winters, predictive factors such as plant growth and water table in summer could contribute more to winter CH4 emission than in situ freezing conditions. Considering that plant growth and water table are also the key factors controlling the spatial-temporal variation of CH4 emission in summer, we therefore suggested that winter CH4 emission represents the “inertia” of summer CH4 emission.
7

Aerobic methane emission from plant: comparative study of different communities and plant species of Alpine meadow

84%
Guo X., Du Y., Li J., Liu S., Han D., Li Y., Lin L., Zhang F., Oyang J., Cao G.
Polish Journal of Ecology
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2015
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tom 63
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nr 2
This study was aimed at qualifying the methane emission ability of different communities in alpine meadow, and monitoring if the dominant species from these communities could emit methane in a sand culture experiment. Using the static chamber technique and gas chromatography method, two experiments were conducted in the field and in laboratory. First, the methane flux rate was measured in plant communities: natural alpine meadows (NM), Elymus nutans pasture (EP), herbaceous community in shrub (HS), and a Poa fruticosa meadow (PS). A 3-month sand culture experiment was conducted to show the non-microbial methane emission from living plants. Average methane emission rates were estimated to be 16.83 µg m⁻² h⁻¹(range -49.3–107.8), 28.49 µg m⁻² h⁻¹ (range -55.0–96.2) and 20.91 µg m⁻² h⁻¹ (range -31.9– 145.8) for NM, EP, and PS, respectively. Methane emission rate from EP was significantly higher than from NM during the growing season. The reclaim of grassland would enhance the methane emission in this aera through this one year's measurement, but whether this conclusion suit to the whole Tibet Plateau, it remains further longer time and larger spatial scale experiments to verify it. The result of the sand culture experiment showed that some plant species emitted methane in an aerobic, nonmicrobial environment, most of herbaceous species showed a methane emission characteristic, the methane emission from plant may have a species dependent characteristic.
8
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Emisja metanu z udziałem Salix americana uprawianej na polach irygowanych ściekami miejskimi.

84%
Przywara G., Stepniewska Z.
Acta Agrophysica
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2001
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tom 57
9
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Plant contribution to methane emission after irrigation of peat soil with municipal waste water

84%
Przywara G., Stepniewska Z.
International Agrophysics
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2002
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tom 16
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nr 3
10

The effect of habitat on methane emission from an alpine wetland

67%
Chen H., Wu N., Gao Y., Yao S., Wang Y., Tian J., Sun G., Yuan X.
Polish Journal of Ecology
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2009
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tom 57
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nr 2
377-381
Alpine wetland is a source for methane (CH₄), an important greenhouse gas, but little is known about how this habitat influences the emission. To understand this wetland habitats were selected at the altitude of 3430 m a.s.l. (in National Wetland Nature Reserve of Zoige, Quingle – Tibetan Plateau) and the methane flux was measured with static chambers in three different sites, including hollows with Carex muliensis Hand – Mazz. and Eleocharis valleculosa Ohwi f. setosa (Ohwi) Kitagawa., grass hummocks composed of Kobresia tibetica Maxim, Cremanthodium pleurocaule R. D. Good, Potentilla bifurca L. and Pedicularis sp. We have found that in alpine wetland these habitats significantly affect CH₄ emissions in the onset (April, 2006) and peak (August, 2005) stages of growing season.Hollows covered with Carex muliensis and Eleocharis valleculosa had higher values of emission than grass hummocks built by several grass species. Slight difference of CH₄ emission was found between two kinds of hollows with Carex muliensis and Eleocharis valleculosa. These results were consistent with the change of water table, which was found best correlated with CH₄ emissions (r²= 0.43, P <0.01) in the peak stage of growing season. Directly measured shoot biomass and plant heights were best related to CH₄ emissions (r²= 0.59, P <0.01). However, in the onset stage of growing season, variation of CH₄ emission may not be simply ascribed to changes in water table and vegetation structure.
11
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Climate change: causes, effects and the need for science education for sustainable development

67%
Nwona H. A.
International Letters of Natural Sciences
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2013
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tom 04
The world we live in has witnessed some drastic environmental imbalance in recent times. These imbalances have threatened sustainable development- which is the ultimate goal of man-environment relationship. This paper reviews the causes and effects of climate change on man and his environment with a view to using science education to solve the problems posed by climate change. Literature shows that climate change results mainly from human activities such as rapid deforestation for agricultural and industrial purposes, carbon dioxide emission from fossil fuel burning, carbon dioxide emission from burning gasoline for transportation, usage of chemical fertilizers on croplands and methane emission from animals, agriculture and arctic sea beds. The consequences of these activities include global warming, ozone layer depletion, greenhouse effect, rising sea level and acid rain. It is recommended here that the whole educational process be re-packaged to emphasize science education as a panacea for sustainable development. The argument here is that the educational institutions are the best media for the inculcation of proper morals and values. It is also recommended that teacher education programmes should allocate more funds to research in, and teaching of science in schools.
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