Effect of 5 years long cessation of grazing on methane uptake in a semi-arid grassland

• Autorzy: Zhou X. , Hao Y.
• Konferencja: All-Poland Scientific Conference "Interspecies Relationships at Levels of Organization" (2009 ; Krasnobród)
• Języki publikacji: EN

Abstrakty

EN

Grazing exerts a key role in nutrient cycling in grassland ecosystems, however, little is known about the effects of short-term enclosure on methane (CH4) fluxes in a semi-arid steppe biome like this of Inner Mongolia. CH4 fluxes were measured in the Leymus chinensis (Trin) Tzvel. grassland using static chamber and gas chromatography (GC). Measurements were carried out twice per month over a growing season in 2004 at the two sites (one fenced since 1999 (UG99) and the other subjected to freely grazing (FG)). All CH4 fluxes were positive, indicating that this grassland functioned as the active atmospheric CH4 uptakes. During this period, the UG99 site (57.6 [plus or minus] 6.7 [mu]g C m[^-2] h[^-1]) had significantly higher mean CH4 uptake in comparison to the FG site (37.0 [plus or minus] 6.3 [mu]g C m[^-2] h[^-1]). A significant liner negative correlations between CH4 uptake and soil moisture (0.5 cm) at the both sites were found (P <0.05). The results indicated that short-term enclosure was helpful to improve CH4 uptake in this area.

Słowa kluczowe

EN

grassland ecosystem; Inner Mongolia; methane; semi-arid grassland

PL

ekosystem użytków zielonych; metan; Mongolia Wewnętrzna; półpustynne pastwiska

• Wydawca: Museum and Institute of Zoology, Polish Academy of Sciences
• Czasopismo: Polish Journal of Ecology
• Rocznik: 2010
• Tom: Vol. 58, nr 4
• Strony: 801--804
• Opis fizyczny: Bibliogr. 10 poz.,

Twórcy

autor

Zhou X.

autor

Hao Y.

• College of Life Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100049, China ; Environmental Futures Centre, Griffith University, Nathan 4111, Australia

Bibliografia

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