6CAO M, GREGSON K, MARSHALL S. 1998. Global methane emissionfrom wetlands and its sensitivity to climate change [J]. AtmosphericEnvironment, 32(19): 3293-3299.
7RAMESH R, PURVAJA G R, PARASHAR D C, et al. 1997.Anthropogenic Forcingon on Methane Efflux from Polluted Wetlands(Adyar River) of Madras City. India, Ambio [J]. 26(6): 369-374.
8WATSON R T, NEIRA FILHO L G, SANHUEZA E, et al. 1992. Sourcesand sinks [C]//HOUGHTON J J, CALLANDER J T, VAMEY S K.The Supplementary Report to the IPCC Scientific Assessment. Reportto the IPCC Scientific Assessment. Cambridge: Cambridge UniversityPress: 24-46.