桑沟湾沉积碳库年汇入速率的长期变化及其区域性差异

刘赛; 杨庶; 杨茜; 孙耀

doi:10.3969/j.issn.0253-4193.2018.01.006

桑沟湾沉积碳库年汇入速率的长期变化及其区域性差异

doi: 10.3969/j.issn.0253-4193.2018.01.006

中国水产科学研究院黄海水产研究所农业部海洋渔业可持续发展重点实验室, 山东青岛 266071

基金项目: 国家自然科学基金-山东省政府联合资助项目（U1406403）；中国水产科学研究院重大预研项目（2014A01YY01）。

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出版历程
- 收稿日期: 2017-06-24

The long-term changes of annual carbon sequestration rate and regional difference in culture areas of Sanggou Bay

Key Laboratory of Sustainable Development of Marine Fisheries Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Fisheries Science Academy, Qingdao 266071, China

摘要

摘要: 对取自桑沟湾北西南三根柱样近200 a碳来源及埋藏通量的解析，分析了湾内不同站位各形态碳的差异性，进而对全湾碳埋藏进行了估算。湾内环流、贝藻养殖等造成湾内不同区域碳埋藏的差异；桑沟湾总碳（TC）平均量1.79%，有机碳（TOC）平均量0.54%，无机碳（TIC）平均量1.25%，TOC含量相对较小，为海陆混合来源，以陆源有机碳（C_t）为主，大规模人工养殖后，海源有机碳（C_a）有明显增加的趋势。桑沟湾碳埋藏通量平均为228.9 g/（m²·a），以无机碳为主要埋藏形式（约占70%），高的沉积速率及生物残骸沉降使桑沟湾养殖区碳的来源及埋藏区别于其他陆架海域。
- 碳埋藏 /
- 区域性差异 /
- 桑沟湾
Abstract: In this study, we assessed the burial fluxes and source appointment of different forms of carbon in core sediments collected from culture areas in Sanggou Bay, and preliminarily analyzed the otherness in different position. Water circulation and the propagation and wreckage of shellfish and algae in Sanggou Bay dominated the carbon burial. The average content of total carbon (TC),organic carbon (TOC) and inorganic carbon (TIC) in Sanggou Bay were 1.79%,0.54% and1.25%. TOC accounted for a small proportion in TC, mostly of which derived from terrigenous organic carbon (C_t), and while the proportion of marine-derived organic carbon (C_a) increased significantly since the beginning of large-scale aquaculture. The average TC burial fluxes was 228.9 g/(m²·a), which was dominated by TIC (about 70%). High sedimentation rate and biological wreckage settlement distinguished the source and burial fluxes of carbon in Sanggou Bay from other coastal areas.
- carbon burial fluxes /
- regional difference /
- Sanggou Bay

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