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依据2010年4～5月对黄渤海调查所得的数据,分析了黄渤海溶解有机碳(dissolved organic carbon,DOC)的含量及其平面分布特征,并对其影响因素进行了初步探讨.结果表明,2010年春季黄渤海DOC的浓度范围为0.96～4.71 mg.L-1,平均浓度为2.27 mg.L-1.平面分布上,DOC整体呈现南北近岸浓度高、中部外海浓度低的特点.在渤海西部近岸、山东半岛东部及长江口东北部均存在高值,尤其是渤海西部近岸,DOC浓度最高达到4.71 mg.L-1,这主要是受河流输入和沿岸流的影响;低值区则主要集中在南黄海中部外海,DOC浓度普遍低于1.50 mg.L-1.
Based on the data from the Huang-Bohai survey from April to May in 2010, the content of dissolved organic carbon (DOC) and its distribution in the Yellow Sea and the Bohai Sea are analyzed and the influencing factors are discussed. The results show that, In the spring of 2010, the concentration of DOC in the Yellow Sea and the Bohai Sea was 0.96 ~ 4.71 mg · L-1 with an average concentration of 2.27 mg · L-1.In the plane distribution, DOC showed the characteristics of high concentration in the north and south coasts and low concentrations in the central and outer seas. There was high value in the coastal areas of the west coast of Bohai Sea, eastern Shandong Peninsula and northeast of Yangtze River estuary, especially in the coastal areas of the west coast of the Bohai Sea. The maximum DOC concentration reached 4.71 mg.L-1, which was mainly affected by river input and coastal flow. The area is mainly concentrated in the open sea in the central part of the southern Yellow Sea, DOC concentrations generally lower than 1.50 mg.L-1.