• Spectroscopy and Spectral Analysis
  • Vol. 42, Issue 3, 990 (2022)
WANG Xiang1、1; 2;, YIN Gao-fang1、1; *;, ZHAO Nan-jing1、1;, GAN Ting-ting1、1;, YANG Rui-fang1、1;, QIN Zhi-song3、3;, DONG Ming1、1; 2;, CHEN Min1、1; 2;, DING Zhi-chao1、1; 2;, QI Pei-long1、1; 2;, WANG Lu1、1; 2;, MA Ming-jun1、1; 2;, MENG De-shuo1、1;, and LIU Jian-guo1、1;
Author Affiliations
  • 11. Key Laboratory of Environment Optics and Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
  • 33. Institute of Computer and Information Security, Guilin University of Electronic Technology, Guilin 541004, China
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    DOI: 10.3964/j.issn.1000-0593(2022)03-0990-07 Cite this Article
    Xiang WANG, Gao-fang YIN, Nan-jing ZHAO, Ting-ting GAN, Rui-fang YANG, Zhi-song QIN, Ming DONG, Min CHEN, Zhi-chao DING, Pei-long QI, Lu WANG, Ming-jun MA, De-shuo MENG, Jian-guo LIU. Fast Measurement of Primary Productivity in the Yellow Sea and Bohai Sea Based on Fluorescence Kinetics Technology[J]. Spectroscopy and Spectral Analysis, 2022, 42(3): 990 Copy Citation Text show less

    Abstract

    As an important -starting point in the marine ecosystem, phytoplankton primary production is the foundation of the marine food web and an important indicator for seawater quality. In this paper, in order to accurately measure, monitor, and predict spatiotemporal variations of phytoplankton primary productivity, and its kinetic response to external environmental conditions, a measurement technology based on chlorophyll fluorescence kinetics was studied, and a fast measuring instrument with a response time of 1.6 minutes and a precision of 4.86% was developed. The correlation coefficient between the measured phytoplankton primary productivity by the developed instrument and the measured photosynthetic oxygen evolution rate by the liquid-phase oxygen electrode was 0.991. The instrument was equipped on the China Marine Surveillance 101 experimental ship for the underway measurement and the vertical profiles measurement of phytoplankton primary productivity in the Yellow Sea and the Bohai Sea. Underway measurement results showed that the phytoplankton primary productivity in Bohai bay is 1.1~1.4 times higher than outside the bay, and vertical profiles measurement results showed a depth-dependent response of phytoplankton primary productivity on each site in the Yellow sea area. Compared with traditional methods, the developed instrument in this paper has the advantages of rapidness, stability, and no need for sample cultivation and can provide an advanced technical method for marine ecological environment assessment.

    0 Introduction

    Reliable assessment of phytoplankton primary productivity is crucial to understanding marine carbon geochemical cycling and the oceanic ecosystem function. As the basis of the marine food web[1], the carbon sequestration of marine phytoplankton accounts for about 50% of the global phytoplankton primary production and defines the carrying capacity of the aquatic ecosystem[2]. The monitoring of marine primary productivity has important values for the balance of global CO2, the early warning of algal bloom and the assessment of marine fishery resources[3,4,5].

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    Xiang WANG, Gao-fang YIN, Nan-jing ZHAO, Ting-ting GAN, Rui-fang YANG, Zhi-song QIN, Ming DONG, Min CHEN, Zhi-chao DING, Pei-long QI, Lu WANG, Ming-jun MA, De-shuo MENG, Jian-guo LIU. Fast Measurement of Primary Productivity in the Yellow Sea and Bohai Sea Based on Fluorescence Kinetics Technology[J]. Spectroscopy and Spectral Analysis, 2022, 42(3): 990
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