大连温带海域潮间带底栖海藻固碳和储碳潜力模拟研究

邵魁双; 巩宁; 王立军; 曲翊; 杜念东

doi:10.3969/j.issn.0253-4193.2019.12.011

大连温带海域潮间带底栖海藻固碳和储碳潜力模拟研究

doi: 10.3969/j.issn.0253-4193.2019.12.011

1.
国家海洋环境监测中心，辽宁大连 116023
2.
大连海事大学环境系统生物学研究所，辽宁大连 116026
3.
大连市环境监测中心，辽宁大连 116023
4.
大连海洋大学水产学院，辽宁大连 116023

基金项目: 国家重点研发计划项目（2016YFC1402104）；中国科学院战略性先导科技专项 (A类 )（XDA13020401）；海洋公益性专项（201105021）。

详细信息

作者简介:
邵魁双（1973—），男，辽宁省凤城市人，副研究员，博士，主要从事海藻生物学研究。E-mail: ksshao@nmemc.org.cn

中图分类号: X55
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- 被引次数: 0
出版历程
- 收稿日期: 2019-02-16
- 修回日期: 2019-10-28
- 网络出版日期: 2021-04-21
- 刊出日期: 2019-12-25

Simulation study on the carbon fixed and stored by intertidal seaweeds in temperate waters in Dalian

1.
National Marine Environmental Monitoring Center, Dalian 116023, China
2.
Institute of Environmental Systems Biology, Dalian Maritime University, Dalian 116026, China
3.
Dalian Environmental Monitoring Center, Dalian 116023, China
4.
Institute of Aquaculture, Dalian Marine University, Dalian 116023, China

摘要

摘要: 底栖海藻是海洋生态系统中重要的初级生产力，开展其固碳和储碳机制研究，有利于提高对我国海域海洋固碳和储碳潜力的认识。本文基于海区条件的模拟，开展了大连海域潮间带优势海藻的日固碳量、日呼吸量和日有机碳释放量的测定，结合海区生物量的调查，阐述了3个海藻床潮间带海藻固碳和储碳的季节变化规律。结果显示：在海藻固碳能力方面，绿藻类的固碳能力最强，褐藻类次之，红藻类最低。大连海域潮间带海藻的固碳量、储碳量和有机碳释放量在12月至5月处于较高水平，6月至11月较低，平均每个海藻床潮间带区域年固碳量和年有机碳释放量分别为1.72×10⁵ g/a和2.1×10⁴ g/a。潮间带海藻月固碳量是储碳量的1.7倍。
- 底栖海藻 /
- 固碳 /
- 储碳
Abstract: To better understand the potential of carbon fixation in China Sea, it is necessary to conduct the researches on the mechanism of carbon fixed and stored by benthic seaweeds, the important primary productivities in marine ecosystems. In this paper, some dominant seaweeds from intertidal zones in Dalian were measured on the daily fixed and respired carbon, and daily release of organic carbon. Furthermore, seasonal variation of carbon fixed and stored by intertidal seaweeds from three seaweed beds in Dalian were elucidated, combined with the measurements of the biomass. The results showed that green algae had the strongest capacity in carbon fixation, followed by brown algae and red algae. The carbon fixed and stored, and organic carbon released by intertidal seaweeds in Dalian were higher in December-May, and lower in June-November. The annual total carbon fixed, and organic carbon released by intertidal seaweeds of each seaweed bed were 1.72×10⁵ g/a and 2.1×10⁴ g/a respectively. The amount of monthly fixed carbon was 1.7 times that of stored carbon.
- benthic seaweeds /
- carbon fixation /
- carbon storage

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图 1 调查海域和采样点

Fig. 1 The study area and location of sampling

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图 2 调查海域潮间带底栖海藻固碳量的月际变化

Fig. 2 Monthly variation of the amount of the carbon fixed by intertidal seaweeds

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图 3 调查海域潮间带海藻体内储碳量的月际变化

Fig. 3 Monthly variation of the amount of the carbon stored in intertidal seaweeds

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图 4 调查海域潮间带底栖海藻有机碳释放的月际变化

Fig. 4 Monthly variation of the amount of released organic carbon by intertidal seaweeds

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表 1 各供试海藻的反应条件

Tab. 1 Reaction conditions of the tested seaweeds

	试验种类	光照梯度/µmol·m⁻²·s⁻¹	温度/℃	反应时间/h
绿藻	孔石莼	18.4、92、184、276、368	8±0.5，15±0.5，19±0.5	1.2
	缘管浒苔	18.4、92、184、276、368	6±0.5，8±0.5	1.2
	袋礁膜	18.4、92、184、276	3±0.5，8±0.5	1.5
	盘苔	18.4、92、184、276、368、460	3±0.5，8±0.5	1.0
褐藻	萱藻	18.4、92、184	3±0.5，8±0.5	2.0
褐藻	鼠尾藻	18.4、92、184	8±0.5，15±0.5	2.0
红藻	马泽藻	18.4、92、184	3±0.5，9±0.5，15±0.5	2.0
	松节藻	18.4、92、184	8±0.5，15±0.5，22±0.5	2.0
	楔基角叉菜	18.4、92、184	3±0.5，8±0.5	2.0
	单条胶粘藻	18.4、92、184	3±0.5，6±0.5	2.0
	鸭毛藻	18.4、92、184	15±0.5，22±0.5	2.0

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表 2 各供试海藻日固碳量、有机碳日释放量和含碳率

Tab. 2 Daily carbon fixation, release of organic carbon and carbon content rate of tested seaweeds

供试海藻		日净固碳量/mg·d⁻¹·g⁻¹	DOC日释放量/mg·d⁻¹·g⁻¹	POC日释放量/mg·d⁻¹·g⁻¹	含碳率/%
绿藻	孔石莼	3.41±0.29	0.689±0.043	0.144±0.118	30.68±0.42
	缘管浒苔	7.07±1.71	0.670±0.048	0.226±0.067	27.31±0.41
	袋礁膜	6.36±1.38	1.502±0.074	0.302±0.151	29.33±0.45
	盘苔	2.52±0.53	0.372±0.022	0.098±0.012	22.75±0.37
褐藻	鼠尾藻	2.51±0.46	0.238±0.046	0.134±0.029	33.49±1.09
褐藻	萱藻	1.68±0.28	0.110±0.010	0.077±0.007	37.06±0.75
红藻	马泽藻	1.08±0.11	0.103±0.017	0.014±0.007	25.77±0.3
	楔基角叉菜	0.48±0.03	0.067±0.014	0.034±0.002	28.65±0.41
	松节藻	0.72±0.10	0.060±0.002	0.046±0.004	25.46±0.49
	单条胶粘藻	0.72±0.12	0.060±0.010	0.014±0.005	32.06±0.26
	鸭毛藻	0.24±0.06	0.029±0.005	0.019±0.002	22.39±0.56

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