浮游植物粒级结构的原位测量

曹文熙; 孙兆华; 李彩; 周雯; 许占堂

doi:10.3788/OPE.20182604.0764

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浮游植物粒级结构的原位测量

现代应用光学 | 更新时间：2020-07-05

- 浮游植物粒级结构的原位测量
- In situ measurement of phytoplankton size class
- 光学精密工程 2018年26卷第4期页码：764-770
- 作者机构：
  
  中国科学院南海海洋研究所热带海洋环境国家重点实验, 广东广州 510301
- 作者简介：
  
  [ "曹文熙(1963-), 男, 湖南郴州人, 博士, 研究员, 1992年于中科院长春光机所获得硕士学位, 2006年于中科院南海海洋所获得博士学位, 主要从事海洋光学、海洋遥感基础的研究。E-mail:wxcao@scsio.ac.cn" ]
  [ "孙兆华(1979-), 男, 内蒙古人, 高级工程师, 2011年于中国科学院南海海洋研究所获得博士学位, 主要从事海洋技术及其应用的研究。E-mail:Joeysun@scsio.ac.cn" ]
- 基金信息：
  
  中国科学院战略性先导专项A类(XDA11040302);广州市科技计划资助项目(201504010034);广州市科技计划资助项目(201707020023);热带海洋环境国家重点实验室开放基金资助项目(LTOZZ1602)
- DOI：10.3788/OPE.20182604.0764
  中图分类号： Q948.8;O657.3
- 收稿日期：2017-09-14，
  
  录用日期：2017-10-9，
  
  纸质出版日期：2018-04-25
- 稿件说明：
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曹文熙, 孙兆华, 李彩, 等. 浮游植物粒级结构的原位测量[J]. 光学精密工程, 2018,26(4):764-770.

Wen-xi CAO, Zhao-hua SUN, Cai LI, et al. In situ measurement of phytoplankton size class[J]. Optics and precision engineering, 2018, 26(4): 764-770.
曹文熙, 孙兆华, 李彩, 等. 浮游植物粒级结构的原位测量[J]. 光学精密工程, 2018,26(4):764-770. DOI： 10.3788/OPE.20182604.0764.

Wen-xi CAO, Zhao-hua SUN, Cai LI, et al. In situ measurement of phytoplankton size class[J]. Optics and precision engineering, 2018, 26(4): 764-770. DOI： 10.3788/OPE.20182604.0764.

摘要

浮游植物粒级通常采用采集水样的分级叶绿素法来测定，比较费时且难以实现剖面连续测量。本文提出了一种基于测定海水光吸收来反演浮游植物粒级结构的原位测量系统。该测量系统硬件主要由高稳定光源、光学窗口、样品管、光纤高精度微型光谱仪、数据采集系统等组成。测量数据基于遗传算法来分析浮游植物粒级结构。海上初步试验结果表明，该仪器能够测定水下300 m之内的浮游植物粒级结构，实现1 m剖面分辨率的连续测量，尤其适用于分析50~80 m深度叶绿素最大值层的浮游植物粒级结构变化，在未来海洋浮游植物粒级结构测定中有良好的应用前景。

Abstract

Size-fractionated filtration is a common approach for measuring phytoplankton size classes in marine observation. However

this approach is time-consuming and unsuitable for analysis of a large number of samples in profiling measurement. In this paper

an in situ measurement system was developed for retrieving the phytoplankton size classes using light absorption coefficient of seawater. The hardware system of this instrument consists of a light system

optical windows

sample cell

fiber optic cable

mini-spectrometers

and a data collection and control system. Based on the genetic algorithm

the measured absorption coefficients were transformed to phytoplankton size class. Experiments have been carried out in situ in the northern South China Sea. The results prove that the instrument can be used to measure and analyze phytoplankton size class in up to 300 m seawater depth with an vertical interval of 1 m. This system is especially suitable for analyzing the variability of phytoplankton size class in 50 to 80 m seawater depth

which is commonly called the maximum chlorophyll depth in open ocean. The instrument could be used for ocean profiling measurement of phytoplankton size classes

which exhibits favorable future application prospects in marine observation.

关键词

Keywords

references

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