Mariculture structure adjustment to achieve China's carbon neutrality and mitigate climate change

Song, Chi Eun; Xiong, Yonglong; Jin, Peng; Sun, Youbin; Zhang, Qiaochu; Ma, Zengling; Gao, Guang

doi:10.1016/j.scitotenv.2023.164986

Cited by 9 publications

(1 citation statement)

References 40 publications

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“…It is necessary to adjust these two aspects to decrease the net carbon emissions of fisheries. First, clams contributed the most in terms of carbon sinks, so the production of clams in aquaculture should be increased for dual carbon goals (Gu et al, 2022;Song et al, 2023). Second, seawater trawl net was an active fishing method and a significant source of carbon emissions, so the proportion of seawater trawl net in fishing methods should be reduced (Devi et al, 2021;Atwood et al, 2024).…”

Section: 2mentioning

confidence: 99%

Spatio-temporal differences and simulation studies of the carbon budget from fisheries in the northern marine economic circle of China

Jia,

Liu,

Guan

et al. 2024

Front. Mar. Sci.

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With the proposal of dual carbon goals, enhancing carbon sinks and reducing carbon emissions has become a critical issue. Fisheries, as a component of agriculture, possess the dual attributes of being a “carbon sink” (biological carbon fixation) and a “carbon source” (the carbon emissions from fishing vessels). Therefore, it is necessary to assess the carbon sink and carbon emission levels of fisheries. The northern marine economic circle, which includes Liaoning, Hebei, Tianjin, and Shandong, is an important site for fisheries in China, characterized by abundant aquatic resources. However, a comprehensive assessment of the carbon budget for fisheries in this region is still unclear. This study calculated the carbon sinks, carbon emissions, and net carbon emissions associated with fisheries in the region from 2013 to 2020. Additionally, we used sensitivity analysis and scenario simulation to explore the factors influencing the net carbon emissions. The results revealed that the carbon budget of the northern marine economic circle was in a carbon deficit (the amount of carbon emissions was higher than that of carbon sinks) from 2013 to 2020. However, a downward trend in the net carbon emissions was observed, indicating the potential of achieving carbon neutrality. From the perspective of provinces, significant differences among provinces (cities) were found in terms of carbon sinks, carbon emissions, and net carbon emissions, with Shandong having the largest net carbon emissions. Furthermore, the production of clams and the use of seawater trawl net have a significant impact on the net carbon emissions. Increasing the production of clams while reducing the power of trawling operations can significantly decrease net carbon emissions. Based on these results, this study provides relevant suggestions to enhance the carbon sink capacity and decrease the carbon emissions of fisheries in the northern marine economic circle.

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Section: 2mentioning

confidence: 99%

Spatio-temporal differences and simulation studies of the carbon budget from fisheries in the northern marine economic circle of China

Jia,

Liu,

Guan

et al. 2024

Front. Mar. Sci.

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Quantifying growth, erosion and dislodgement rates of farmed kelp (Saccharina latissima) to examine the carbon sequestration potential of temperate seaweed farming

Canvin,

Moore,

Smale

2024

J Appl Phycol

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Seaweed cultivation, including kelp species, is rapidly expanding in many regions. A widely assumed co-benefit of seaweed farming is increased local carbon sequestration rates (thereby contributing to climate change mitigation), although direct field-based measurements of carbon assimilation and release are largely lacking. We quantified growth, erosion and dislodgement rates of farmed Saccharina latissima in Porthallow Bay (Cornwall, UK) throughout a typical cultivation season to provide insights into the carbon sequestration potential of small-scale kelp farms. Blade elongation rates increased from ~ 1.3 cm day−1 to ~ 2.3 cm day−1 in March–April, before declining to 1.4 cm day−1 by May. Meanwhile, erosion rates remained low, ranging from ~ 0.5 to ~ 0.8 cm day−1. Dislodgement rates decreased from 20% of plants in January–February to 5% in April–May. Rates of carbon accumulation and loss increased from January to May, related to an increase in standing stock. Conservative first-order estimates suggest that the farm captures 0.14 t C ha−1 y−1, of which up to 70% is released into the environment as particulate organic carbon. Based on previous estimates of carbon burial and storage rates, the farm may sequester 0.05 t CO2e ha−1 y−1. These values suggest that scaling-up European kelp farming should be motivated by other co-benefits, such as low-carbon product alternatives, job creation and potential biodiversity gains, and not be solely driven by a perceived meaningful increase in carbon sequestration. Importantly, further information needs to be obtained from a variety of cultivation sites to develop a better understanding of carbon dynamics associated with kelp farms.

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Innovative microalgae technologies for mariculture wastewater treatment: Single and combined microalgae treatment mechanisms, challenges and future prospects

Zhao,

Peng,

2025

Environmental Research

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Mariculture structure adjustment to achieve China's carbon neutrality and mitigate climate change

Cited by 9 publications

References 40 publications

Spatio-temporal differences and simulation studies of the carbon budget from fisheries in the northern marine economic circle of China

Spatio-temporal differences and simulation studies of the carbon budget from fisheries in the northern marine economic circle of China

Quantifying growth, erosion and dislodgement rates of farmed kelp (Saccharina latissima) to examine the carbon sequestration potential of temperate seaweed farming

Innovative microalgae technologies for mariculture wastewater treatment: Single and combined microalgae treatment mechanisms, challenges and future prospects

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