湿地甲烷厌氧氧化的重要性和机制综述  

Review on the importance and mechanisms of anaerobic oxidation of methane in wetlands

作　　者：翟俊[1] 马宏璞 陈忠礼 肖君 刘显槟 李媛媛 杨忠平[2] 汪昆平[1] 罗志勇[3] ZHAI Jun;MA Hong-pu;CHEN Zhong-li;XIAO Jun;LIU Xian-bin;LI Yuan-yuan;YANG Zhong-ping;WANG Kun-ping;LUO Zhi-yong(Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment, Chongqing University,Chongqing 400045, China;School of Civil Engineering, Chongqing University, Chongqing 400045, China;School of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400045, China)

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045 [2]重庆大学土木工程学院,重庆400045 [3]重庆大学化学化工学院,重庆400045

出　　处：《中国环境科学》2017年第9期3506-3514,共9页China Environmental Science

基　　金：国家自然科学基金项目(51478062);中央高校基本科研业务费专项项目(106112016CDJZR218805);重庆市科技计划项目(cstc2015jcyj BX0111)

摘　　要：介绍以甲烷氧化为主线的湿地甲烷减排机制,具体包括甲烷有氧氧化和厌氧氧化两种,甲烷有氧氧化主要发生在湿地水土界面有氧层和植物根系泌氧区,相关研究较为深入.系统梳理湿地甲烷厌氧氧化(AOM)的3种主要反应机制的研究进展,发现厌氧氧化中对硫酸盐还原型和反硝化型甲烷厌氧氧化的研究较为深入,而对以铁锰氧化物作为电子受体的甲烷厌氧氧化机制的研究则相对较少,尚处于起步阶段.最新研究发现微生物通过种间直接电子转移影响甲烷厌氧氧化进程.明晰湿地甲烷排放及其厌氧氧化机制,可为湿地甲烷的氧化研究提供理论依据,并为湿地甲烷的减排技术提供新的思路.In this paper,methane oxidation mechanisms under aerobic and anaerobic conditions in wetlands wasintroduced.Methane oxidation under aerobic condition occurs at aerobic zone of the wetlands(e.g.,rhizosphere andwater-sediment interface),which has been studied frequently.Simultaneously,the progress of the three main reactions ofanaerobic oxidation of methane(AOM)was systematically reviewed in this paper.Previous studies mostly focus on thesulfate,nitrite,and nitrate dependent AOM processes while iron and manganese driven AOM is still found to beinsufficient.The direct microbial interspecies electron transfer(DIET)that influence AOM process had also been reported.This paper also discussed methane emission in wetland and its anaerobic oxidation mechanisms,aiming at providing atheoretical basis for the study of methane oxidation and new ideas for methane emission reduction in wetlands.

关 键 词：湿地 甲烷排放 甲烷厌氧氧化 

分 类 号：X131[环境科学与工程—环境科学]