溶解作用对南海北部沉积物捕获器碳、氮通量估算的影响

孙麟; 李宏亮; Jennerjahn Tim; 冉莉华; 金海燕; 张静静; Wiesner Martin; 陈建芳

doi:10.3969/j.issn.0253-4193.2015.12.003

溶解作用对南海北部沉积物捕获器碳、氮通量估算的影响

doi: 10.3969/j.issn.0253-4193.2015.12.003

1.
国家海洋局第二海洋研究所海洋生态系统与生物地球化学重点实验室, 浙江杭州 310012;浙江大学海洋化学与环境研究所, 浙江杭州 310058
2.
国家海洋局第二海洋研究所海洋生态系统与生物地球化学重点实验室, 浙江杭州 310012
3.
莱布尼兹中心赤道海洋生态研究所, 不莱梅 D-28359
4.
德国汉堡大学地质研究所, 汉堡 D-20146

基金项目: 国家自然科学基金项目重大研究计划重点支持项目(91128212);国家海洋局第二海洋研究所基本科研业务费专项资金项目(JT1010)。

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出版历程
- 收稿日期: 2015-05-22
- 修回日期: 2015-09-27

Underestimation of C and N flux in the northern South China Sea due to dissolution in sediment trap samples

1.
Key Laboratory of State Oceanic Administration for Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China;Institute of Environment and Marine Chemistry, Zhejiang University, Zhejiang 310058, China
2.
Key Laboratory of State Oceanic Administration for Marine Ecosystem and Biogeochemistry, Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
3.
Leibniz Center for Tropical Marine Ecology Fahrenheitstr, Bremen 6 D-28359, Germany
4.
Institute of Geology, Hamburg University, Hamburg D-20146, Germany

摘要

摘要: 由于化学溶出、物理溶解以及胞外酶等作用,沉积物捕获器中颗粒物在锚系布放期间会发生一定程度的溶解,从而引起沉积物捕获器中碳、氮颗粒物通量的低估。本文对于1987-1988年南海北部中深层沉积物捕获器中碳、氮颗粒物的溶解作用进行了研究。溶解作用对于碳、氮通量估算的影响大致随着深度的增加而减小。总体而言,颗粒有机碳通量低估约3.8%~40.3%,平均值为26.6%。颗粒氮通量低估约4.2%~76.4%,平均值为43.7%。碳、氮颗粒物的溶出量与颗粒物通量大小关系不明显,但是样品储存时间对于碳、氮颗粒物溶解作用的影响较显著,储存时间较长的样品中颗粒物溶出量更大。
- 南海 /
- 沉积物捕获器 /
- 溶解作用 /
- 通量
Abstract: The sinking particles in the sediment trap can be dissolved to a certain extent due to the chemical dissolution,physical dissolution,extracellular enzyme,etc. This paper studies the dissolution of biogenic particles in the sediment trap located in the deep northern South China Sea in 1987-1988. It could be concluded that the effect of dissolution on the estimation of various fluxes decreased with depth. Overall,the underestimation of particulate organic carbon flux was about 3.8%-40.3%,with an average of 26.6%. The underestimation of particulate nitrogen flux was about 4.2%-76.4%,with an average of 43.7%. There were no relationships between the particle fluxes and the dissolved C and N. But the storing time had significant impact on dissolution of the sinking particles. The sample with longer storing time would have more dissolved quantity.
- South China Sea /
- sediment trap /
- solubilization /
- flux

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