Reviews on methane production and the reaction to sulfate in saline wetlands was made. The results showed that acetate and hydrogen, methylamine, methanol, trimethylamine, methionine were substrates of methane production in saline wetlands. Methane production potentials of tidal saline wetland were lower. The inhibition effects of sulfate on methane production was significant.Substrates, sulfate concentration, temperature and pH value controls the inhibition effects of sulfate on methane production, furthermore, salinity, quantity and activity of methane production bacteria were key factors controlling methane production.
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