| 北极陆架沉积碳埋藏及其在全球碳循环中的作用 |
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| 引用本文： | 陈建芳,张海生,金海燕,金明明,刘子琳.北极陆架沉积碳埋藏及其在全球碳循环中的作用[J].极地研究,2004,16(3):193-201. |
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| 作者姓名： | 陈建芳 张海生 金海燕 金明明 刘子琳 |
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| 作者单位： | 1. 国家海洋局第二海洋研究所,区域海洋学开放实验室,杭州,310012;同济大学海洋地质重点实验室,上海,200092
2. 国家海洋局第二海洋研究所,区域海洋学开放实验室,杭州,310012 |
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| 基金项目： | 中国第二次北极科学考察、国家重点基础研究发展规划项目 (G2 0 0 0 785 0 0 )，国家自然科学基金项目 (No.40 1 0 60 0 4,No .40 4760 0 3 )资助 |
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| 摘 要： | 陆架边缘海有机碳的堆积速率比大洋高一个数量级 ,全球大约有 80 %以上的沉积有机碳埋藏于陆架地区。北极陆架是世界上最大的陆架 ,占全球陆架面积的 1 / 4 ,然而由于相关的工作较少 ,目前对北极沉积有机碳埋藏情况及其对全球的贡献还知之甚少。北极地区沉积有机碳埋藏主要取决于生物泵 ,而生物泵过程一个主要的限制因子是海冰的覆盖。近几十年来随着全球变暖 ,北极海冰覆盖面积正在快速减小。本文从北极沉积有机碳的来源、河流携带的沉积物输入、海冰覆盖率、营养盐来源等方面初步讨论了陆源输入和生物泵过程对沉积碳来源和埋藏时空变化的影响。结合两次北极考察的初步结果指出 ,全球变暖很可能使北极陆架边缘海成为沉积有机碳的高效汇区。
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| 关 键 词： | 全球变暖 北极陆架 生物泵过程 有机碳埋藏 |
| 修稿时间： | 2004年6月1日 |
ACCUMULATION OF SEDIMENTARY ORGANIC CARBON IN THE ARCTIC SHELVES AND ITS SIGNIFICANCE ON GLOBAL CARBON BUDGET |
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| Chen Jianfang ,Zhang Haisheng ,Jin Haiyan ,Jin Mingming and Liu Zilin.ACCUMULATION OF SEDIMENTARY ORGANIC CARBON IN THE ARCTIC SHELVES AND ITS SIGNIFICANCE ON GLOBAL CARBON BUDGET[J].Chinese Journal of Polar Research,2004,16(3):193-201. |
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| Authors: | Chen Jianfang Zhang Haisheng Jin Haiyan Jin Mingming and Liu Zilin |
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| Institution: | Chen Jianfang 1,2,Zhang Haisheng 1,Jin Haiyan 1,Jin Mingming 1 and Liu Zilin 1 |
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| Abstract: | Sedimentary organic carbon accumulation rate in continental margin seas is more than one order higher than that of the oceans. Ocean margins play a very important role in global carbon budget since about 80% of terrestrial and marine organic carbon buried in the continental shelves. Of the Arctic Ocean total area over 30% is shelf, and it is accounted for one-fourth of global shelf area. Because of its ice cover biological pump in the Arctic Ocean was thought to be very limited, thus it has not been considered as a sink of carbon dioxide. With the recent observation of global warming, decreasing of ice cover in shelf area would lead to potential simulate primary production, thus increase sedimentary organic carbon accumulation rate in the shelves. In this review paper, organic carbon sources, riverine discharge of sediment and nutrients, sea ice cover variation, and biological pump were discussed in order to evaluation potential increasing of sedimentary organic carbon accumulation in the arctic shelves under global warming. |
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| Keywords: | global warming Arctic shelves biological pump organic carbon accumulation |
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