“…Large variations of the annual emission rate have been recorded in land, ranging from 5 to 77 Tg S (Aneja 1990). Biogenic sulfur emission sources for the land ecosystem have been analyzed in soil (Adams et al 1979(Adams et al , 1981Staubes et al 1989), vegetation , both soil and vegetation (Goldan et al 1987;Lamb et al 1987;Mactaggart et al 1987), and freshwater (Bechard and Rayburn 1979;Nriagu and Holdway 1989). Hydrogen sulfide (H2S), carbonyl sulfide (COS), carbon disulfide (CS2), methyl mercaptan (CH3SH), DMS, and dimethyl disulfide (DMDS) are known to be emitted from the soil (Minami 1982).…”