摘要
根据2007年11月31日在胶州湾走航连续观测所得pCO2数据,结合水文、化学和生物等要素的同步观测资料,对胶州湾海域pCO2分布及其影响因素进行了探讨。结果表明：秋季胶州湾表层海水pCO2实测值在315720μatm之间,平均值为423μatm。东部海域由于有机物降解及李村河水输入的影响表现为大气CO2的源;西部海域由于浮游植物活动的影响为大气CO2的弱汇区;湾中部水交换较好的海域,浮游植物活动和有机物降解共同影响着pCO2的分布。总体来说,秋季胶州湾表现为大气CO2的弱源,海-气界面CO2交换速率在-5.9423.15 mmol·m^-2·d^-1之间,平均值为2.87 mmol·m^-2·d^-1,由此可估算出秋季胶州湾可向大气释放940.74 tC。
Distribution and influencing factors were discussed bBased on the data obtained through continuous underway measurements of pCO2 and relating parameters in hydrology,chemistry and biology,distribution and air-sea carbon fluxes were discussed in November 2007.The results showed that the surface seawater pCO2 in Jizaozhou Bay in autumn ranged from 315 to 720 atm,with an average of 423 atm.Due to the degradation of organic matter and the runoff from the Licun river,the eastern part of the bay turned out to be the source of CO2 with respect to the atmosphere;regarding the high primary production,the western part of the Jiaozhou bay acted as a moderate sink to the atmosphere;in addition to a significant seawater exchange between the Bay and the Yellow Sea,primary production and the degradation of organic matter both had an impact on the distribution of pCO2 in the middle part of the Bay.The whole Jiaozhou Bay acted as a source of atmosphere CO2 and released 940.74 tC into the atmosphere in autumn.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第10期127-132,共6页
Periodical of Ocean University of China
基金
青岛市科技计划发展项目(06-2-2-21-jch)资助
关键词
胶州湾
PCO2
有机物降解
浮游植物活动
Jiaozhou Bay
pC02
degradation of organic matter
primary production
