中文摘要：

以闽江口区鳝鱼滩湿地分布的鱼虾混合养殖塘为研究对象,于2011年9月—2012年1月,采用悬浮箱-气相色谱法对养殖塘白天水-气界面CO2、CH4和N2O的通量进行观测,并同步测定地面气象及养殖塘表层水的物理、生物和化学指标.结果表明,观测期间养殖塘水-气界面CO2、CH4和N2O3种温室气体通量变化范围分别为-22.15～74.79mg·m^-2·h^-1、0.08～6.62mg·m^-2·h^-1和-9.82～47.16μg·m-2·h-1,平均值分别为21.04、3.15mg·m^-2·h^-1和16.58μg·m^-2·h-1,整体均表现为大气中3种温室气体的排放源.养殖塘水-气界面3种温室气体通量特征受到人类管理行为（水质管理和饵料投放等）、养殖鱼虾的觅食和代谢过程及气象因子和水体理化性质等诸多因素的共同影响.

英文摘要：

Variations of CO2, CH4 and N2O fluxes at water-air interface in the daytime were determined using a floating chamber- gas chromatography method in a mixed culture pond of fish and shrimp from September 2011 to January 2012 in the Shanyutan Wetland of the Min River estuary, southeast China. Meanwhile, the meteorological indicators in ground surface and the physical, chemical and biological indicators of surface water were also measured. The fluxes of CO2, CH4 and N2O at the water-air interface showed an obvious temporal variations during observation. CO2, CH4 and N2O fluxes ranged from -22.15 to 74.79 mg·m^-2·h^-1, 0.08 to 6.62 mg·m^-2·h^-1 and -9.82 to 47.16 μg·m^-2·h^-1, respectively, with the average values of 21.04, 3.15 and 16.58 μg·m-2·h-1, respectively. The mixed culture pond of fish and shrimp functioned as a source of CO2, CH4 and N2O. The greenhouse gases fluxes at water-air interface were influenced by many factors, including human activities （water quality management and bait launch）, growth of fish and shrimp, meteorological factors, and physical and chemical properties of water.