华东师范大学学报（自然科学版） >

2022 , Vol. 2022 >Issue 3: 90 - 100

DOI: https://doi.org/10.3969/j.issn.1000-5641.2022.03.010

生态与环境科学

浙南人工红树林秋茄叶片光合作用与荧光特性动态研究

  • 周成 ,
  • 黄颖 ,
  • 杨华蕾 ,
  • 杜明卉 ,
  • 张颖 ,
  • 唐剑武
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  • 华东师范大学 河口海岸学国家重点实验室, 上海　200241

收稿日期: 2021-03-03

  录用日期: 2021-04-12

  网络出版日期: 2022-05-19

基金资助

上海市科委项目(19230742300); 自然资源部海洋战略规划与经济问题研究项目; 蓝色海湾项目工程监测与评估项目; 龙港市河口红树林生态系统监测项目 (LGCG2021350); 自然资源部海洋生态监测与修复技术重点实验室开放基金 (MEMRT202001)

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Photosynthesis and fluorescence characteristics of mangrove Kandelia candel leaves in southern Zhejiang Province

  • Cheng ZHOU ,
  • Ying HUANG ,
  • Hualei YANG ,
  • Minghui DU ,
  • Ying ZHANG ,
  • Jianwu TANG
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  • State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai　200241, China

Received date: 2021-03-03

  Accepted date: 2021-04-12

  Online published: 2022-05-19

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摘要

探讨了浙江南部人工红树林秋茄叶片光合作用与叶绿素荧光动态变化特征, 以此为该物种近期北移引种生态恢复应用提供科学依据. 利用LI-6800F便携式光合-荧光自动测量系统, 测量了不同月份秋茄叶片光合作用、叶绿素荧光的日变化, 并分析了它们之间的关系. 结果表明: 除了水利用效率、非光化学淬灭以外, 各参数的日变化曲线大体上呈U型或倒U型, 如蒸腾速率、气孔导度、电子传递速率、最大光化学反应量子效率; 且夏季7月、8月部分参数值明显高于11月、12月, 如净光合速率、蒸腾速率、气孔导度、电子传递速率. 此外, 单日上, 除水利用效率分别与实际光化学量子效率、光化学淬灭系数、非光化学淬灭系数的相关性不显著外, 光合因子与荧光因子的相关性显著, 而各月上, 仅净光合速率、蒸腾速率、气孔导度、水利用效率、电子传递速率之间的相关性显著. 以上说明, 单日上, 中午前后是秋茄叶片光合能力最强的时候, 而各月上, 夏季是秋茄光合能力最强的季节, 春季与秋季次之, 冬季最弱; 秋茄叶片光合与叶绿素荧光在单日上的相关性比在各月上的更高.

关键词： 红树林秋茄; 动态变化; 光合作用; 叶绿素荧光; 相关性

本文引用格式

周成 , 黄颖 , 杨华蕾 , 杜明卉 , 张颖 , 唐剑武 . 浙南人工红树林秋茄叶片光合作用与荧光特性动态研究[J]. 华东师范大学学报（自然科学版）, 2022 , 2022(3) : 90 -100 . DOI: 10.3969/j.issn.1000-5641.2022.03.010

Abstract

In this paper, we explore the dynamic changes in photosynthesis and chlorophyll fluorescence in Kandelia candel leaves from restored mangroves in southern Zhejiang Province to provide a scientific basis for the ecological restoration and northward migration of Kandelia candel. Using a LI-6800F portable, automatic photosynthesis-fluorescence measurement system, the diurnal variation of photosynthesis and chlorophyll fluorescence of Kandelia candel were measured for one day each month in 2019; the data was then used to analyze the relationship between the two parameters. The results showed that, except for water use efficiency (WUE) and non-photochemical quenching (NPQ), the diurnal variation curves of the parameters were generally u-shaped or inverted u-shaped; examples of these parameters included transpiration rate (E), stomatal conductance (Gsw), electron transfer rate (ETR), and maximum photochemical reaction quantum efficiency ( $F_{\rm {v}}' $ / $F_{\rm {m}}'$ ). Some parameters, such as net photosynthetic rate (A), E, Gsw, and ETR, were found to be significantly higher in July and August than in November and December. In addition, except for WUE, the correlation between photosynthetic factors and fluorescence factors was significant on a daily basis, and the correlation between A, E, Gsw, WUE, and ETR was significant on a monthly basis. The results also demonstrated that the photosynthetic capacity of Kandelia candel leaves was the strongest around noon on any given day; at the monthly level, the strongest capacity was observed in the summer, followed by spring and autumn, and lastly winter. The correlation between photosynthesis and chlorophyll fluorescence of Kandelia candel leaves on individual days was higher than that at the monthly level.

Key words： mangrove Kandelia candel; dynamic variation; photosynthesis; chlorophyll fluorescence; correlation

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