文献类型：期刊文献

中文题名：北极楚科奇海沉积生物硅的分布及其硅质泵过程初探

英文题名：Biogenic Silica Distribution in Chukchi Sea and Its Implications for Silicate Pump Process

作者：王斌[1];朱庆梅[1,2];庄燕培[1];金海燕[1,3];李宏亮[1];张扬[1];陈建芳[1]

机构：[1]国家海洋局第二海洋研究所国家海洋局海洋生态系统与生物地球化学重点实验室,杭州310012;[2]广东海洋大学广东省近海海洋变化与灾害预警技术重点实验室,广东湛江524088;[3]国家海洋局第二海洋研究所卫星海洋环境动力学国家重点实验室,杭州310012

年份：2015

卷号：34

期号：6

起止页码：1131

中文期刊名：矿物岩石地球化学通报

外文期刊名：Bulletin of Mineralogy, Petrology and Geochemistry

收录：CSTPCD、、北大核心2014、CSCD2015_2016、Scopus、北大核心、CSCD

基金：国家自然科学基金项目(41276198;41406217;41506222);极地专项(CHINARE 2014-03-04;CHINARE 2014-03-04;CHINARE 2014-02-01);极地科学战略研究基金项目(2012-01-04)

语种：中文

中文关键词：生物硅;生物泵;表层沉积物;楚科奇海

外文关键词：biogenic silica; biological pump; surface sediment; Chukchi Sea

中文摘要：依托第3次、第4次、第5次北极科学考察在北极楚科奇海采集的表层沉积物样品,通过碱液连续提取法对生物硅含量进行分析,以探讨楚科奇海的生物硅分布及硅质泵过程。结果显示,楚科奇海表层沉积物中生物硅的含量为1.23%~10.60%。高值区位于楚科奇海陆坡处72°N附近和楚科奇海南部阿纳德尔流和西伯利亚沿岸流的交界处68°N附近,低值区位于楚科奇海东部阿拉斯加沿岸流影响区域,其生物硅含量小于3%。楚科奇海表层沉积物中生物硅的分布与上层水体的初级生产力的分布格局较一致,而影响上层水体浮游植物生产的两个重要因素分别为楚科奇海环流格局（尤其是太平洋入流水的影响）和海冰融化。生物硅和有机碳之间存在很好的正相关关系,表层沉积物中蛋白石/有机碳（Sibio/Corg）的比值为1.6~2.02,与北太平洋中该比例相当,表明上层海洋硅质泵过程对楚科奇海碳埋藏的贡献较大,使得楚科奇海成为全球海洋吸收大气CO2重要的汇之一。

外文摘要：Biogenic silica content in marine surface sediments collected from three Chinese Arctic Research Expeditions in Chukchi Sea was determined with continuous alkaline extraction methods. The results showed that the content of biogenic silica in surface sediments was 1. 23% ~ 10. 60%. Two high-content areas are located in the slope of the Chukchi Sea（ 72°N） and the northern part of the Bering Strait in southern Chukchi Sea where Anadyr Water and Eastern Siberian Coastal Water meets（ 68°N）; Low content area is located in east Chukchi Sea influenced by Alaska Coastal Water,with biogenic silica content 3%or less. The main factors controlling the biogenic silica distribution patterns include the upper primary productivity,circulation patterns in Chukchi Sea（ especially the Pacific water inflow into Chukchi Sea） and influence of sea ice. The existence of a good positive correlation between biogenic silica and organic carbon indicated the contribution of silicate pump in biological pump.Opal / organic carbon ratio（ Sibio/ Corg） in Chukchi Sea was varied from 1.6 to 2.02,the same magnitude as it was in North Pacific Ocean,indicating the high biological pump efficiency in Chukchi,especially for the large contribution of silicate pump,making the Chukchi Sea become one of the important global atmospheric CO2 sinks area.