2024-09-17
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fuxi, the pioneer of chinese civilization and one of the three sovereigns, is the ancestor of mankind in mythology. in the fishing and hunting era when labor skills were low, he invented nets for catching fish, beasts and birds, and pioneered animal husbandry.
recently, "fuxi no. 1", named after fuxi, was successfully built and put into operation in shanwei, guangdong, attracting widespread attention from the outside world."fuxi no. 1" is an ultra-large wind-fishing integrated cage platform built in the open waters of the south china sea, which can directly withstand a super typhoon of level 17.it has injected strong impetus into the development of marine ranching, a new fishery model.
"fuxi no. 1". image source: cctv-1 official weibo
why develop marine ranching?
marine ranches are artificial fisheries formed through scientific cultivation and management in selected sea areas based on marine ecological principles and modern marine engineering technology.it utilizes the natural marine ecological environment and combines artificial release and propagation technology to achieve the cultivation of economic marine organisms.
since artificial fish ponds and deep-sea fishing can meet humanity’s demand for aquatic products, why do we still need to develop marine ranches?
marine fish farm. image source: tuchong creative
1
a "comfortable" growing environment for aquatic products
marine ranches use a more natural marine environment for aquaculture, with good seawater circulation and better water quality, which helps reduce pollution and disease risks.
2
rich breeding methods
marine ranchingartificial release and proliferation technology, combined with bottom seeding and cagesfarming methods such as these can achieve the symbiosis of multiple marine organisms, while artificial fish ponds farm a single or a few species by feeding or adjusting water quality.
3
resource use and sustainability
although deep-sea fishing can produce a large amount of aquatic products, overfishing will seriously disrupt the balance of the marine ecological environment.marine ranching cultivates and manages fishery resources through scientific methods.realizing the sustainable use of fishery resources and the restoration of the marine ecological environment highlights the balance of the ecosystem and the recycling of resources.
4
economic benefits and product diversity
marine ranching can simultaneously cultivate a variety of marine organisms, maximizing aquaculture benefits and increasing product diversity. at the same time, marine ranching can also stimulate the development of industries such as recreational fishing and tourism, bringing greater economic value while achieving sustainable use of marine resources.
ocean ranch + wind power generation
1
complementary resources
wind power generation uses the abundant wind energy resources at sea to provide a green and stable energy supply for marine ranches.it reduces its dependence on traditional energy and reduces carbon emissions.at the same time, marine ranches provide a good environmental foundation for wind power generation, and through ecological restoration and resource conservation, they ensure the ecological balance of the waters around wind farms.
offshore wind power generation. image source: tuchong creative
2
space sharing
offshore wind farms occupy a large area of sea, but only the space above the sea surface is developed, and the space below the sea surface is not fully developed and utilized. marine ranches can use the space below the wind farm for breeding activities. this kind of space sharingthe utilization efficiency of sea areas has been improved and the maximum utilization of resources has been achieved.
3
ecosystem synergy
wind power generation facilities (such as wind turbine tower foundations) can play a role similar to artificial reefs.it provides good habitat and spawning places for marine life such as fish, shellfish and algae.this ecological synergy helps promote the diversity and ecological balance of marine organisms and improve the aquaculture efficiency of marine ranches.
4
economic benefits
the power generated by wind power in the deep sea is lost when it is transmitted to land.the use of wind power to power marine ranches achieves “on-site consumption” and reduces power losses.marine ranching can not only cultivate high-quality seafood, but also develop tourism, bringing huge economic benefits. this combined model helps reduce the operating costs of a single industry and improve overall economic benefits.
submarine cables. image source: tuchong creative
unique "wind and fishing fusion"
1
super large independent cage platform
"fuxi no. 1" is located in the central area of the 500,000-kilowatt offshore wind farm of china general nuclear power group in houhu, shanwei, about 11 kilometers from the coast. the main structure cage of "fuxi no. 1" is 70 meters long, 35 meters wide, and about 25.7 meters deep. it has a breeding space of about 63,000 cubic meters. such a large breeding space makes the integrated breeding technology of multiple nutrient levels "useful".by introducing artificial ecological fishing reefs, bottom seeding and other technologies, the biodiversity of deep-water cages can be improved.with higher benefits.
2
strongest typhoon resistance
typhoons are a common occurrence at sea, so if marine ranches want to gain a foothold at sea, they must have strong typhoon resistance capabilities.anti-typhoon, anti-impact, strong anti-corrosionthe characteristics of the cage are integrated into one, and a new cage structure design is applied.“6 piles + diagonal braces + double upper blocks”the pile foundation truss structure can directly withstand a category 17 super typhoon.
3
the highest level of intelligence
"fuxi no. 1" is not only stable enough, but also very intelligent.the platform is equipped with five intelligent marine ranch systems, including green electricity supply, combined feeding, net cleaning, environmental monitoring, and live fish transportation.in the future, the platform may also be equipped with equipment such as offshore green electricity hydrogen production, further increasing the contribution of wind and fishery combination to ecological and environmental protection.
the completion and operation of "fuxi no. 1" marks the successful integration of the "green energy" of offshore wind power generation and the "sea granary" of marine ranching. this technology can not only restore the marine ecosystem, but also enrich the application areas of green energy. we look forward to the implementation of more marine-related technologies to promote the process of marine environmental protection.
[1]Buck, B. H., Langan, R. Aquaculture Perspective of Multi-Use Sites in the Open Ocean: The Untapped Potential for Marine Resources in the Anthropocene[M]. Cham:Springer, 2017.
[2]Sheng, Z. G., Yong, C., Dong, Z. P., et al. Significance and feasibility of establishing marine ranching in Chinese sea area[J]. Journal of Dalian Fisheries University, 2003.
[3] yi weihua, li siyang. research on the current status and typical models of marine ranching in my country[j]. chinese fisheries economy, 2024.
[4] wu di, ren zhongjin, han ronggui, et al. current status and practical exploration of the integrated development of offshore wind power and marine ranching[j]. china fisheries economy, 2023.
planning and production
author: shi chang, phd in physical chemistry
proofread by xu lailinlin
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