中国海洋大学学报（自然科学版）2018，Vol.48Issue(2)：85-90,6.DOI:10.16441/j.cnki.hdxb.20170046
马里亚纳海沟水体溶解有机物的垂直分布特征
Vertical Variation of Dissolved Organic Matter in the Mariana Trench
摘要
Abstract
In order to demonstrate the vertical characteristics of dissolved organic matter in the Mariana Trench,waters from surface to deep layers were collected and analyzed for DOC and CDOM in January,2016.The results showed that DOC content ranged at 37.12～58.30 μmol · L-1,which was higher in the surface,and followed by that at 2 000 m.CDOM relative content,which was indicated by a(320),was higher with 0.48 m-1 in the 8 727 m,lower with 0.14 m-1 in the 4 000 m.The relative contents of CDOM from surface to 4 000 m layer followed a similar pattern with that of DOC,but opposite to that of DOC in layers deeper than 4 000 m.3 species of humic substances and 4 of protein-like components were detected based on CDOM fluorescence results.Fluorescence signals of protein-like components were stronger than those of humic substances.The vertical variations of CDOM fluorescence signals were controlled by higher primary production in surface water,reproduction and degradation of organic matter at 2 000 m layer,and further degradation and aggregation of stable organic chemicals in deep layers.关键词
马里亚纳海沟/CDOM/吸收光谱/荧光光谱Key words
Mariana Trench/CDOM/absorption spectrum/fluorescence spectrum分类
海洋科学引用本文复制引用
王泽华,邹立,陈洪涛,王旭晨,简慧敏..马里亚纳海沟水体溶解有机物的垂直分布特征[J].中国海洋大学学报（自然科学版）,2018,48(2):85-90,6.基金项目
“全球变化与海气相互作用”专项(GASI-02-PAC-ST-MSwin) （GASI-02-PAC-ST-MSwin）
国家自然科学基金项目(41176064)资助 Supported by "Global Change and Interaction Between Sea and Gas"(GASI-02-PAC-ST-MSwin) （41176064）
National Natural Science Foundation of China(41176064) （41176064）
