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 (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.

Słowa kluczowe

EN

habitat; wetland habitat; methane emission; Alpine wetland; water table; plant height; Alpine meadow; phenology; redox potential; growing season; Carex muliensis; Eleocharis valleculosa

• Wydawca: -
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2009
• Tom: 57
• Numer: 2
• Opis fizyczny: p.377-381,fig.,ref.

Twórcy

autor

Chen H

• Chongqing University, Chongqing 400030, China

autor

Wu N.

autor

Gao Y.

autor

Yao S.

autor

Wang Y.

autor

Tian J.

autor

Sun G.

autor

Yuan X.

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