The effect of habitat on methane emission from an alpine wetland

• Autorzy: Chen H. , Wu N. , Gao Y. , Yao S. , Wang Y. , Tian J. , Sun G. , Yuan X.
• Języki publikacji: EN

Abstrakty

EN

Alpine wetland is a source for methane (CH[4]), 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 CH[4] 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 CH[4] 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 (r[^2] = 0.43, P <0.01) in the peak stage of growing season. Directly measured shoot biomass and plant heights were best related to CH[4] emissions (r[^2] = 0.59, P <0.01). However, in the onset stage of growing season, variation of CH[4] emission may not be simply ascribed to changes in water table and vegetation structure.

Słowa kluczowe

EN

alpine meadow; habitat effects; methane fluxes; phenology; plant height; redox potential; water table

PL

fenologia; łąki alpejskie; potencjał redoks; poziom wód gruntowych; przepływ metanu; wysokość roślin

• Wydawca: Museum and Institute of Zoology, Polish Academy of Sciences
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2009
• Tom: Vol. 57, nr 2
• Strony: 377--381
• Opis fizyczny: Bibliogr. 20 poz.,Rys., tab.,

Twórcy

autor

Chen H.

autor

Wu N.

autor

Gao Y.

autor

Yao S.

autor

Wang Y.

autor

Tian J.

autor

Sun G.

autor

Yuan X.

• College of Resources and Environment Science, Chongqing University, Chongqing 400030, China ; Key Laboratory for the Exploitation of South-West Resources and Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, 400044,

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