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南沙海域上层海水碳垂直通量的初步研究
韩舞鹰1, 王明彪2, 王汉奎1
1.中国科学院南海海洋研究所 广州 510301;2.国家海洋局南海分局 广州 510300
摘要:
根据1990年5—6月在南沙海域4个站点投放颗粒物捕集器采集样品的分析结果，计算了该海域上层海水碳垂直通量。结果表明：（1）南沙海域上层海水颗粒有机碳总生成量为298 mg/(m2?d)，其中35％分解参与再循环，65％以颗粒形式离开真光层向下输送；（2）颗粒有机碳向下通量为193 mg/(m2?d)，总溶解无机碳穿过跃层向上垂直通量为3600 mg/(m2?d)，真光层颗粒无机碳向下通量为27 mg/(m2?d)，大气进入海洋的海气界面二氧化碳通量为13 mg/(m2?d)。
关键词:  海洋  碳  垂直通量
DOI：
分类号:
基金项目:国家专项南沙群岛海域综合考察陈果
THE VERTICAL CARBON FLUX OF EPIPELAGIC WATER IN THE NANSHA AREA OF THE SOUTH CHINA SEA
Han Wuying1, Wang Mingbiao2, Wang Hankui1
1.South China Sea Institute of Oceanology, Academia Sinica, Cuangzhou 510301;2.South China Sea Administration, SOA, Guangzhou 510300
Abstract:
The downward flux of particulate organic carbon (DPOC) and particulate organic nitrogen (DPON) in the upper 80 m of the water column was measured using sediment traps at four sites in the Nansha Islands area of the South China Sea in May - June 1990. The total production of DPOC in the euphotic layer was 298 mg/(m2?d), of which 35% was decomposed and recycled and 65% was particulate form transported downward to the deeper layer. The upward flux of total dissolved inorganic carbon passing through the thermocline was 3 600 mg/(m2?d), the downward flux of DPOC was 193 mg/(m2?d), the downward flux of particulate inorganic carbon in the euphotic layer was 27 mg/(m2?d), and the carbon dioxide flux across the air-sea interface into the Ocean was 13 mg/(m2?d).
Key words:  Ocean, Carbon, Vertical flux
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