透明胞外聚合颗粒物碳输运新途径

孙军; 郭聪聪; 张桂成

doi:10.3969/j.issn.0253-4193.2019.08.012

透明胞外聚合颗粒物碳输运新途径

doi: 10.3969/j.issn.0253-4193.2019.08.012

孙军^{1, 2,},
郭聪聪^{1, 2},
张桂成^{1, 2}

1.
天津科技大学天津市海洋资源与化学重点实验室，天津 300457
2.
天津科技大学印度洋生态系统研究中心，天津 300457

基金项目: 国家自然科学基金（41876134，41676112，41276124）；天津市“131”创新群体项目（20180314）；天津市高等学校创新团队培养计划（TD12-5003）；长江学者奖励计划(T2014253)。

详细信息

作者简介:
孙军（1972—），男，甘肃省华亭县人，教授，从事海洋生态学研究。E-mail: phytoplankton@163.com

中图分类号: X55
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- 文章访问数: 447
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- 被引次数: 0
出版历程
- 收稿日期: 2018-12-21
- 修回日期: 2019-03-13
- 网络出版日期: 2021-04-21
- 刊出日期: 2019-08-25

A new pathway for carbon transportation of transparent exopolymer particles

Sun Jun^{1, 2
,},
Guo Congcong^{1, 2},
Zhang Guicheng^{1, 2}

1.
Tianjin Key Laboratory of Marine Resources and Chemistry, Tianjin University of Science and Technology, Tianjin 300457, China
2.
Research Centre for Indian Ocean Ecosystem, Tianjin University of Science and Technology, Tianjin 300457, China

摘要

摘要: 目前大家普遍认为，透明胞外聚合颗粒物(Transparent Exopolymer Particles，TEP)因其独特的凝聚效应导致碳通量向海底输出。但是，近几年的研究表明TEP不仅影响了碳沉降途径，其本身能够悬浮甚至向海水表层迁移，导致其在海洋微表层(Surface Micro-layer, SML)积累，最终显著影响海洋表层碳通量。TEP和其他颗粒物聚集形成凝聚物后，其运动趋势则由凝聚物中TEP的含量占比，即最终颗粒物密度所决定。一个新的值得注意的现象是，密度低的TEP通过与其他微粒聚合形成表面活性物质(Surface-active Substances, SAS)，会在海洋–大气界面形成薄膜，显著影响海–气CO₂交换通量，甚至对全球气候变化造成影响。
- 透明胞外聚合颗粒物 /
- 新途径 /
- 海洋微表层 /
- 海–气交换 /
- 海洋碳循环
Abstract: Previously, it was a broad consensus that transparent exopolymer particles (TEP) resulted in carbon flux output to the seabed due to its unique aggregation effect. Recently, some studies have shown that TEP could be retained in the water column and even ascend to the surface layer, which profoundly contributed to the elevated TEP concentrations and decreasing of air-sea carbon fluxes in the Surface Micro-layer (SML). The sinking or ascending of these TEP originated aggregates was finally depended on its density. TEP and further aggregated with other micro-particles became the surface-active substances in the SML, produce a thin layer film at the ocean-atmosphere interface, will heavily affect the exchange fluxes of sea-air CO₂ and further the global climate changes.
- transparent exopolymer particles /
- new pathway /
- surface micro-layer /
- air-sea exchange /
- marine carbon cycle

HTML全文

图 1 透明胞外聚合颗粒物（TEP）循环概念模型（参考Wurl等^[11]和Mari等^[27]）

Fig. 1 Conceptual model of transparent exopolymer particles (TEP) cycling in the ocean (reference from Wurl et al^[11] and Mari et al^[27])

下载: 全尺寸图片幻灯片

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