Methane Fluxes from Alpine Wetlands of Zoige Plateau in Relation to Water Regime and Vegetation under Two Scales

摘要: Methane fluxes in alpine ecosystems remain insufficiently studied, especially terms of the magnitude, temporal, and spatial patterns. To quantify mean methane emission ecosystems, were measured among six microsites within each ecosystem at Zoige National Wetland Reserve. The average from Plateau was 2.25 mg CH4 m(-2) h(-1), which fell into range rate reported by a number studies other wetlands. Prevailing types had important impacts on flux landscape scale. In wet different emissions resulting differences depth water table associated vegetation characteristics. identification based their characteristics thus allows upscaling these ecosystems. However, dry showing even uptake, variation low has poor predicative value for fluxes. There, soil porosity linked to gas diffusion would be key factor explaining