甲烷排放源及减排对策

甲烷是一种比较重要的温室气体， 它对温室效应的作用仅次于二氧化碳。据估计， 目前全球每年排放的甲烷总量为５３５ Ｍｔ， 其中， 通过石油与天然气工业、煤炭开采、固体废物堆存、污水处理、水稻种植、反刍家畜饲养以及生物质燃烧等人类活动排放的甲烷约占７０ ％ 。根据国际能源署的有关调查与研究资料， 比较系统地介绍了上述各种主要甲烷排放源及相应的减排对策。 Methane (CH 4) is the second most important of the greenhouse gases after CO 2. Current total emission of CH 4 in worldwide are estimated to be 535 Mt/a, in which man-made emission from petroleum, natural gas and coal production, disposal of solid waste and sewage, rice cultivation, domesticated livestock and burning of biomass account for a greater proportion of about 70%. This paper presents systematically above mentioned CH 4 emission sources and some appropriate reducing countermeasures according to the investigation and studies of IEA Greenhouse Gas R&D Programme