夏季南黄海海水化学要素的分布特征及影响因素  

Distribution Features of the Chemical Parameters in the Southern Yellow Sea in Summer

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

机构地区：[1]国家海洋局第一海洋研究所海洋生态研究中心,山东青岛266061 [2]国家海洋局第一海洋研究所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：《中国海洋大学学报（自然科学版）》2010年第1期82-88,共7页Periodical of Ocean University of China

基　　金：国家908专项(908-01-ST03;908-01-BC14)资助

摘　　要：基于2006年7月对南黄海调查所得资料,对南黄海海水化学要素的分布特征及影响因素进行了探讨。结果表明:(1)调查海域底层122°E^123°E,33°N以南范围内存在明显的DO亏损现象,证实了长江口外低氧区向南黄海的扩展态势。(2)南黄海西南部上层水体中的营养盐主要来源于长江冲淡水及苏北沿岸流的输运,且营养盐与盐度之间呈较好的负相关,具有一定的保守性,同时发现表层无机氮盈余状况的分布与该海域环流的扩展途径密切相关;南黄海西南部底层东北向的高营养盐水舌是长江冲淡水、台湾暖流前缘水以及底层有机物分解释放营养盐综合作用的结果;南黄海冷水域因有机物分解而积聚了大量营养盐。(3)根据南黄海冷水域海水化学要素的断面分布,指出自DO最大值层开始产生至观测之时该层之下、真光层以内光合作用产氧在温跃层下界的积累和保存在氧最大值形成过程中具有极其重要的作用。Based on the data collected from Southern Yellow Sea investigation during July, 2006, this paper focused on an analysis of the distribution and influencing factors of chemical parameters. Hypoxia phenomenon was found in the bottom water（122°E- 123°E, 32°N-33°N）, which indicated that the hypoxic zone of the Yangtze Estuary spread in the Southern Yellow Sea. The nutrients of the surface water in the southwest area of the Southern Yellow Sea mainly came from the transportation of the Yangtze diluted water and Subei Coastal Water, the nutrients and salinity were negatively correlated,which indicated that the conservatism was a characteristics of the nutrients, besides, the distribution of the surplus condition of the inorganic nitrogen was closely related to the extension of the water circulation. The high-nutrient tongue of the bottom water in the southwest of the Southern Yellow Sea extended to the northeast, which was the results of the combined effects of the weak Yangtze diluted water in bottom water, the Taiwan Warm Current water and the release of the nutrients caused by organic matter decomposition. A large number of nutrients accumulated in the Colcl Water Mass of the Southern Yellow Sea due to the decomposition of organic matter. According to the sectional distributions of the chemical parameters in the Cold Water Mass of the Southern Yellow Sea, pointing that since the beginning of DO maximum layer to the time of observation,the oxygen produced by photosynthesis in the water volume under the DO maximum layer but in the euphoric zone would accumulate and preserve in the lower bound of the thermoeline,which play an extremely important role in the formation of the DO maximum layer.

关 键 词：南黄海 化学要素 分布特征 

分 类 号：P714.4[天文地球—海洋科学] P734.22