| 东海颗粒碳的垂直转移过程 |
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| 引用本文： | 郭志刚,杨作升.东海颗粒碳的垂直转移过程[J].海洋与湖沼,1997,28(6):659-664. |
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| 作者姓名： | 郭志刚 杨作升 |
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| 作者单位： | 青岛海洋大学海洋地球科学学院!青岛，266003，青岛海洋大学海洋地球科学学院!青岛，266003 |
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| 基金项目： | 国家自然科学基金!49636210 |
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| 摘 要： | 在１９９３年和１９９４年两个航次中，利用震动式取样从东海陆架取得３个柱状岩芯样品。对其进行了ＰＯＣ，ＰＩＣ，ＰＯＮ含量和粒度分析，并同其上覆水体的ＰＯＣ，ＰＩＣ以及总颗粒物的垂直通量和悬浮体作了比较。
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| 关 键 词： | 颗粒碳 垂直转移过程 颗粒碳汇 东海 沉积 |
| 收稿时间： | 1997/1/21 0:00:00 |
| 修稿时间： | 1997/7/20 0:00:00 |
VERTICAL TRANSFER PROCESSES FOR THE PARTICULATE CARBON IN THE EAST CHINA SEA |
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| Guo Zhigang and Yang Zuosheng.VERTICAL TRANSFER PROCESSES FOR THE PARTICULATE CARBON IN THE EAST CHINA SEA[J].Oceanologia Et Limnologia Sinica,1997,28(6):659-664. |
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| Authors: | Guo Zhigang and Yang Zuosheng |
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| Institution: | College of Marine Geosciences, Ocean University of Qingdao, Qingdao 266003;College of Marine Geosciences, Ocean University of Qingdao, Qingdao 266003 |
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| Abstract: | Three cores in three typical areas of the East China Sea, including St 111 from the cold eddy mud area in the middle continental shelf, St. 410 from the
middle continental shelf sand area, and St. 403 from the Zhejiang coastal mud area, were taken using a vibro-corer during the Chinese JGOFS Cruises supported by the Natural Science Foundation of China in 1993 and 1994 respectively. The contents of particulate organic carbon (POC), particulate inorganic carbon (PIC), particulate organic nitrogen (PON) and grain size from the three cores were analyzed. Their relation to the vertical fluxes of suspended particulate matter (SPM), POC and PIC, and the composition and concentrations of total suspended matter in the seawater at St. 111 and St. 410 were discussed. The results indicate that the content of PIC in the surface sediments is higher than those of POC. Although there is a considerable high vertical flux of particulate carbon (PC) in the bottom seawater at St. 410, the maintenance of PC in the surface sediments is almost impossible due to the low depositional rate, relatively high energy dynamic condition, and oxidative environment of the sea-floor in that area. The PC may be transferred from the seawater to the surface sediments during the blooming season (i. e. the summer) of marine organisms, but part of them will be transferred back to the seawater again. Possibly, surface sediments dominate in the dis-carbon process during the winter. Therefore, the budget of PC on the sea-floor sediment-seawater interface is in dynamic equilibrium, making the contribution of carbon's catch very limited in the middle continental shelf sand area. The cold eddy mud area and Zhejiang coastal mud area are the PC sinks since the two areas have relatively high vertical fluxes of PC and the conditions for PC's maintenance on the surface sediments are satisfied. The catch amount of carbon in the Zhejiang coastal mud area is much more than that of the cold eddy mud area because the former has a much higher depositional rate. The PC sinks in the seawater controlled by the marine organism production and other carbon origins do not always coincide with the PC sinks of the sea-floor surface sediments in the East China Sea. |
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| Keywords: | Particulate carbon Vertical transfer processes Particulate carbon sink The East China Sea |
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