2007年春季南黄海溶解氧的分布特征及影响因素  

Features of Dissolved Oxygen Distribution and Its Effective Factors in the Southern Yellow Sea in Spring,2007

作　　者：韦钦胜[1,2] 魏修华[1,2] 谢琳萍[1,2] 臧家业[1,2] 战闰[1,2] 

机构地区：[1]国家海洋局第一海洋研究所,山东青岛266061 [2]海洋生态环境科学与工程国家海洋局重点实验室,山东青岛266061

出　　处：《海洋科学进展》2010年第2期179-185,共7页Advances in Marine Science

基　　金：我国近海海洋综合调查与评价专项课题--ST03区块水体环境调查与研究(908-01-ST03)

摘　　要：基于2007年4月对南黄海调查所得的溶解氧（DO）资料，重点分析了DO的分布特征，并在此基础上初步探讨了DO与温、盐度水文要素分布之间的关系。结果表明，2007年春季南黄海D0的质量浓度范围为7．33～11．41mg／L，平均值为9．24mg／L；上层水体（0～30m）中，西南部海域DO质量浓度较低，而在黄海暖流影响的中北部海域，受浮游植物光合作用的影响，DO的质量浓度却保持了一个较高的水平；底层D0质量浓度呈近岸高、远海低的分布趋势，并在黄海暖流影响的中北部海域，由于有机物的耗氧分解。存在1个DO低值区；从DO的垂直分布来看，5m和10m层的DO质量浓度均值最高，这一现象可被认为是增温季节DO垂直分布最大值形成的初始阶段，此外，DO断面分布还存在4种典型的类型。水温、浮游植物光合作用以及有机物在底层的分解是影响DO质量浓度的主要因素，而DO分布趋势则主要受控于南黄海环流结构。Based on the dissolved oxygen （DO） data obtained in the Southern Yellow Sea survey in April, 2007, analysis of the DO distribution is focused to preliminarily discuss the relationship between DO and the hydrological elements of temperature and salinity. The results show that in spring , 2007 , DO mass-con- centrations ranged from 7.33 to 11.41 mg/L in the Southern Yellow Sea, with a mean value of 9.24 mg/L. In the upper water （0～30 m） ,DO mass-concentration was low in the southwestern of the sea area,and in the central-north of the area influenced by the Yellow Sea Warm Current, DO mass-concentration kept higher because of the phytoplankton photosynthesis. In the bottom water, DO mass-concentration tended to decrease from the inshore to the open sea, and in the central-north of the area influenced by the Yellow Sea Warm Current,there was a low DO area resulting from the organic matter decomposition. Concerning the vertical distribution, DO mass-concentration was the highest respectively in 5 m and 30 m layers. This phenomenon means the initial stage forming the maximum values in the vertical distribution in the warming season. The sections of the DO distribution can be classified into the four typical types. In general, the water temperature, the phytoplankton photosynthesis, and the organic matter decomposition in bottom layer are the main factors effecting on the DO mass-concentration, and the DO distribution is mainly controlled by the circulation pattern in the Southen Yellow Sea.

关 键 词：南黄海 溶解氧 分布特征 影响因素 

分 类 号：P734.2[天文地球—海洋化学]