seaweed, carbon sink, low-carbon economy, sustainable development, environmental bioremediation
Technical Roadmap and Strategic Thinking of Ocean Negative Emissions Aiming Carbon Neutrality
All countries in the world are paying attention to low-carbon and carbon neutrality to achieve the mitigation of climate warming by reducing CO2 emissions. Ocean is the largest carbon pool on the earth and play an important role of carbon neutrality. More than half of the biological carbon on the earth is achieved by marine organisms. Among them, seaweed resources are abundant, with advantages such as low cost, high yield, measurable carbon sink, and strong cultivation controllability. Industrialized blue carbon can be formed offshore, which is a sustainable model for future development in coastal ecosystems. In addition, large-scale cultivation of seaweed can provide potential solutions to the global marine environmental problems such as ocean acidification, hypoxia, eutrophication, and harmful algal blooms. This review focuses on the function of seaweed carbon sinks, and seaweeds' potential to solve coastal environmental problems in terms of cultivation, environmental bioremediation effects, and comprehensive benefit assessment. In conclusion, large-scale seaweed cultivation is an effective approach for developing low-carbon economy, increasing marine carbon sink capability, solving marine environmental problems, and finally achieving carbon neutrality.
Bulletin of Chinese Academy of Sciences
1 FAO. Global aquaculture production.[2021-02-09]. http://www.fao.org/fishery/statistics/global-aquaculture-production/query/en.
2 Wu J P, Zhang H B, Pan Y W, et al. Opportunities for blue carbon strategies in China. Ocean&Coastal Management, 2020, 194:105241.
3 Buschmann A H, Camus C, Infante J, et al. Seaweed production:Overview of the global state of exploitation, farming and emerging research activity. European Journal of Phycology, 2017, 52(4):391-406.
4 Lubchenco J, Haugan P M, Pangestu M E. Five priorities for a sustainable ocean economy. Nature, 2020, 588:30-32.
5 Chung I K, Beardall J, Mehta S, et al. Using marine macroalgae for carbon sequestration:A critical appraisal. Journal of Applied Phycology, 2011, 23(5):877-886.
6 European Commission. Science for Environment Policy:Salmon Aquaculture Could Incorporate Seaweed and Sea Urchins to Reduce Nitrogen Enrichment. Bristol:DG Environment News Alert Service, 2016.
7 Moreira D, Pires J C M. Atmospheric CO2 capture by algae:Negative carbon dioxide emission path. Bioresource Technology, 2016, 215:371-379.
8 DeVries T, Holzer M, Primeau F. Recent increase in oceanic carbon uptake driven by weaker upper-ocean overturning. Nature, 2017, 542:215-218
9 刘慧,唐启升.国际海洋生物碳汇研究进展.中国水产科学, 2011, 18(3):695-702.
10 许冬兰.蓝色碳汇:海洋低碳经济新思路.中国渔业经济, 2011, 29(6):44-49.
11 焦念志,刘纪化,石拓,等.实施海洋负排放,践行碳中和战略.中国科学:地球科学, 2021, 51:1-14.
12 Zhang Y Y, Zhang J H, Liang Y T, et al. Carbon sequestration processes and mechanisms in coastal mariculture environments in China. Science China Earth Sciences, 2017, 60(12):2097- 2107.
13 Jiao N Z, Wang H, Xu G H, et al. Blue carbon on the rise:Challenges and opportunities. National Science Review, 2018, 5(4):464-468.
14 Wang F M, Sanders C J, Santos I R, et al. Global blue carbon accumulation in tidal wetlands increases with climate change. National Science Review, 2020, doi:10.1093/nsr/nwaa296.
15 Pei L X, Ye S Y, Yuan H M, et al. Glomalin-related soil protein distributions in the wetlands of the Liaohe Delta, Northeast China:Implications for carbon sequestration and mineral weathering of coastal wetlands. Limnology and Oceanography, 2020, 65(5):979-991.
16 Hartmann J, West A J, Renforth P, et al. Enhanced chemical weathering as a geoengineering strategy to reduce atmospheric carbon dioxide, supply nutrients, and mitigate ocean acidification. Reviews of Geophysics, 2013, 51(2):113-149.
17 Yang Y F, Chai Z Y, Wang Q, et al. Cultivation of seaweed Gracilaria in Chinese coastal waters and its contribution to environmental improvements. Algal Research, 2015, 9:236- 244.
18 Sui J J, Zhang J H, Ren S J, et al. Organic carbon in the surface sediments from the intensive mariculture zone of Sanggou Bay:Distribution, seasonal variations and sources. Journal of Ocean University of China, 2019, 18(4):985-996.
19 Zhang D X, Tian X L, Dong S L, et al. Carbon dioxide fluxes from two typical mariculture polyculture systems in coastal China. Aquaculture, 2020, 521:735041.
20 Zhang D, Tian X, Dong S, et al. Carbon budgets of two typical polyculture pond systems in coastal China and their potential roles in the global carbon cycle. Aquaculture Environment Interactions, 2020, 12:105-115.
21 Wang Q, Luan L L, Chen L D, et al. Recruitment from an egg bank into the plankton in Baisha Bay, a mariculture base in Southern China. Estuarine, Coastal and Shelf Science, 2016, 181:312-318.
22 Xie X F, He Z L, Hu X J, et al. Large-scale seaweed cultivation diverges water and sediment microbial communities in the Coast of Nan'ao Island, South China Sea. Science of the Total Environment, 2017, 598:97-108.
23 Chai Z Y, He Z L, Deng Y Y, et al. Cultivation of seaweed Gracilaria lemaneiformis enhanced biodiversity in a eukaryotic plankton community as revealed via metagenomic analyses. Molecular Ecology, 2018, 27(4):1081-1093.
24 Alpert S B, Spencer D F, Hidy G. Biospheric options for mitigating atmospheric carbon dioxide levels. Energy Conversion and Management, 1992, 33:729-736.
25 权伟,应苗苗,康华靖,等.中国近海海藻养殖及碳汇强度估算.水产学报, 2014, 38(4):509-514.
26 岳冬冬,王鲁民,耿瑞,等.中国近海藻类养殖生态价值评估初探.中国农业科技导报, 2014, 16(3):126-133.
27 Sondak C F A, Ang P O, Beardall J, et al. Carbon dioxide mitigation potential of seaweed aquaculture beds (SABs). Journal of Applied Phycology, 2017, 29(5):2363-2373.
28 焦念志,李超,王晓雪.海洋碳汇对气候变化的响应与反馈.地球科学进展, 2016, 31(7):668-681.
29 Sarmiento J L, Bender M. Carbon biogeochemistry and climate change. Photosynthesis Research, 1994, 39(3):209-234.
30 Ji Y, Xu Z G, Zou D H, et al. Ecophysiological responses of marine macroalgae to climate change factors. Journal of Applied Phycology, 2016, 28(5):2953-2967.
31 Sabine C L, Feely R A, Gruber N, et al. The oceanic sink for anthropogenic CO2. Science, 2004, 305:367-371.
32 Gattuso J P, Magnan A, Billé R, et al. Contrasting futures for ocean and society from different anthropogenic CO2 emissions scenarios. Science, 2015, 349:aac4722.
33 Keeling R F, Körtzinger A, Gruber N. Ocean deoxygenation in a warming world. Annual Review of Marine Science, 2010, 2(1):199-229.
34 Melzner F, Thomsen J, Koeve W, et al. Future ocean acidification will be amplified by hypoxia in coastal habitats. Marine Biology, 2013, 160(8):1875-1888.
35 刘之威,罗洪添,武宇辉,等.汕头南澳龙须菜规模栽培对水质和浮游植物的影响.中国水产科学, 2019, 26(1):99- 107.
36 Xiao X, Agusti S, Lin F, et al. Nutrient removal from Chinese coastal waters by large-scale seaweed aquaculture. Scientific Reports, 2017, 7:46613.
37 Lu H M, Xie H H, Gong Y X, et al. Secondary metabolites from the seaweed Gracilaria lemaneiformis and their allelopathic effects on Skeletonema costatum. Biochemical Systematics and Ecology, 2011, 39:397-400.
38 Zheng Y H, Jin R J, Zhang X J, et al. The considerable environmental benefits of seaweed aquaculture in China. Stochastic Environmental Research and Risk Assessment, 2019, 33:1203-1221.
39 黄银爽,欧林坚,杨宇峰.广东南澳岛大型海藻龙须菜与浮游植物对营养盐的竞争利用.海洋与湖沼, 2017, 48(4):806-813.
40 Yang Y F, Li C H, Nie X P, et al. Development of mariculture and its impacts in Chinese coastal waters. Reviews in Fish Biology and Fisheries, 2004, 14:1-10.
41 杨宇峰,费修绠.大型海藻对富营养化海水养殖区生物修复的研究与展望.青岛海洋大学学报(自然科学版), 2003, 33(1):53-57.
42 杨宇峰,赵细康,王朝晖,等.海水养殖绿色生产与管理.北京:海洋出版社, 2007.
43 杨宇峰.近海环境生态修复与大型海藻资源利用.北京:科学出版社, 2016.
44 Sun X, Liu Z W, Jiang Q C, et al. Concentrations of various elements in seaweed and seawater from Shen'ao Bay, Nan'ao Island, Guangdong Coast, China:Environmental monitoring and the bioremediation potential of the seaweed. Science of the Total Environment, 2019, 659:632-639.
45 Luo H T, Wang Q, Liu Z W, et al. Potential bioremediation effects of seaweed Gracilaria lemaneiformis on heavy metals in coastal sediment from a typical mariculture zone. Chemosphere, 2020, 245:125636.
46 Costanza R, d'Arge R, de Groot R, et al. The value of the world's ecosystem services and natural capital. Ecological Economics, 1998, 25(1):3-15.
47 肖建武,康文星,尹少华,等.城市森林固碳释氧功能及经济价值评估——以第三个"国家森林城市"长沙市为实证分析.林业经济问题, 2009, 29(2):129-132.
48 李岩,付秀梅.中国大型海藻资源生态价值分析与评估.中国渔业经济, 2015, 33(2):57-62.
40 Froehlich H E, Afflerbach J C, Frazier M, et al. Blue growth potential to mitigate climate change through seaweed offsetting. Current Biology, 2019, 29(18):3087-3093.
50 Kinley R D, Martinez-Fernandez G, Matthews M K, et al. Mitigating the carbon footprint and improving productivity of ruminant livestock agriculture using a red seaweed. Journal of Cleaner Production, 2020, 259:120836.
YANG, Yufeng; LUO, Hongtian; WANG, Qing; HE, Zhili; and LONG, Aimin
"Large-scale Cultivation of Seaweed is Effective Approach to Increase Marine Carbon Sequestration and Solve Coastal Environmental Problems,"
Bulletin of Chinese Academy of Sciences (Chinese Version): Vol. 36
, Article 4.
Available at: https://bulletinofcas.researchcommons.org/journal/vol36/iss3/4