Fig. 1.

Breakdown products during anaerobic decomposition of rice straw. A Concentrations of methane (blue) and dissolved organic carbon (DOC, red). The concentration of methane in the headspace was expressed in millimoles per gram soil (left y-axis) and DOC in milligram C per liter soil slurry (right y-axis). B Concentrations (in mM) of acetate, propionate and butyrate in soil slurry. C Concentrations (in milligram per liter) of seven monosaccharides in soil slurry, including glucose, rhamnose, mannose, galactose, fucose, arabinose, and xylose. The error bars indicate the standard deviations of three biological replicates