| Biogenic silicate accumulation in sediments, Jiaozhou Bay |
| |
| 引用本文： | 李学刚 宋金明 戴纪翠 袁华茂 李宁 李凤业 孙松. Biogenic silicate accumulation in sediments, Jiaozhou Bay[J]. 中国海洋湖沼学报, 2006, 24(3): 270-277. DOI: 10.1007/BF02842627 |
| |
| 作者姓名： | 李学刚 宋金明 戴纪翠 袁华茂 李宁 李凤业 孙松 |
| |
| 作者单位： | Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China，Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China，Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China，Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China，The Graduate School Chinese Academy of Sciences Beijing 100039 China，Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China，Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China |
| |
| 基金项目： | Supported by Qingdao Special Project for Outstanding Scientists (Nos. 04-3-JJ-03 and 05-2-JC-90), the “100 Talents Project” of Chinese Acad-emy of Sciences, the Knowledge Innovation Program of Chinese Acad-emy of Sciences (Nos. KZCX1-SW-01-08 and KZCX3-SW-214) |
| |
| 摘 要： | 1 INTRODUCTION Silicate, or silicic acid (H4SiO4), is a very im- portant nutrient in the ocean. Unlike other major nu- trients such as phosphate and nitrate or ammonium, which are needed by almost all marine plankton, silicate is an essential chemical req…
|
| 关 键 词： | 生物 硅酸盐 沉积物 胶洲湾 |
| 收稿时间： | 2005-12-21 |
| 修稿时间： | 2006-04-30 |
Biogenic silicate accumulation in sediments, Jiazhou Bay |
| |
| Li Xuegang,Song Jinming,Dai Jicui,Yuan Huamao,Li Ning,Li Fengye,Sun Song. Biogenic silicate accumulation in sediments, Jiazhou Bay[J]. Chinese Journal of Oceanology and Limnology, 2006, 24(3): 270-277. DOI: 10.1007/BF02842627 |
| |
| Authors: | Li Xuegang Song Jinming Dai Jicui Yuan Huamao Li Ning Li Fengye Sun Song |
| |
| Affiliation: | (1) Institute of Oceanology, Chinese Academy of Sciences, 266071 Qingdao, China;(2) The Graduate School, Chinese Academy of Sciences, 100039 Beijing, China |
| |
| Abstract: | It has been widely recognized that low silicate content in seawater is a major limiting factor to phytoplankton primary production in Jiaozhou Bay. However the reason of Si-limitation remains poorly understood. In the present study we measured the biogenic silicate content and discussed the ac- cumulation of silicate in Jiaozhou Bay sediment. The results show that the biogenic silica content in the sediment of the Jiaozhou Bay is obviously much higher than those in the Yellow Sea and the Bohai Sea. The BSi:TN ratios and BSi:16P ratios in the sediment are > 1 and the OC:BSi ratio in sediment is lower than these of Redfield ratio (106:16), indicating that the decomposition rate of OC is much higher than that for BSi in similar conditions. Therefore, the majority of the biogenic silicate was buried and thus did not participate in silicate recycling. Silicate accumulation in sediment may explain why Si limits the phytoplankton growth in the Jiaozhou Bay. Comparing the flux of biogenic silicate from sediments with primary production rate, it can be concluded that only 15.5% of biogenic silicate is hydrolyzed during the journey from surface to bottom in seawater, thus approximate 84.5% of biogenic silicate could reach the bottom. The silicate releasing rate from the sediment to seawater is considerably lower than that of sedi- mentation of biogenic silicate, indicating silicate accumulation in sediment too. In a word, the silicate ac- cumulation in sediment is the key reason of silicate limiting to phytoplankton growth in Jiaozhou Bay. |
| |
| Keywords: | biogenic silicate accumulation limiting factor Jiaozhou Bay |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
