摘要
通过对渤海主要温室气体及海水二氧化碳分压的调查与研究,分析了渤海区底层大气二氧化碳(CO2)、甲烷(CH4)和二氧化碳分压(pCO2)的时空分布特征;渤海大气CH4含量春、夏、秋、冬季均值分别为2085、1974、2056和2060×10-9nl/L,各季节高值区均出现在黄河口邻近海域;黄河口邻近海域大气较高浓度的甲烷可能是渤海沿岸城市夏季出现高值的重要原因;渤海区大气二氧化碳浓度在2006年-2009年呈增高的趋势,2009年9月渤海中、北部海水pCO2在285～617μatm之间变化,渤海中部海水pCO2明显低于辽东湾内海水pCO2,研究区CO2海气通量-5.9～13.4mmol.m-2.d-1在之间,人类活动以显著影响到渤海的碳汇能力。
Based on the monitoring data of the major greenhouse gases and pCO2 in the Bohai Sea Area, distribution characteristics and main influential factors were discussed. The atmospheric CH4 concentration in spring and summer, autumn, winter mean respectively 2085, 1974, 2056 and 2060ppbv over Bohai Sea. A higher concentration of atmospheric methane in the Neighboring area of the Yellow River mouth may be the important reasons to high values in summer of Beijing and other Circum-Bohai-Sea regions. The concentration of atmospheric carbon dioxide over the Bohai Sea showed an increasing tendency form 2006 to 2010. The pCO2 in the central and northern Bohai Sea were in the change of 285 to 617/~atm in September 2009. Beside,the pCO2 of the central Bohai Sea was significantly lower than that of Liaodong bay, ranging from -5.9 to 13.4mmol m^-2 day^-1. The human activity had affected significantly the carbon sink capacity of the Bohai Sea.
出处
《海洋湖沼通报》
CSCD
北大核心
2012年第4期189-193,共5页
Transactions of Oceanology and Limnology
基金
"908"专项--ST01区块水体环境调查与研究项目
北海分局科技支撑项目--渤黄海二氧化碳源汇分布格局及其影响因子研究项目资助
