Ecology reparation method of eutrophication barricaded sea area using gracilaria marine macroalgae

Abstract

The invention relates to an ecological method for restoring eutrophication enclosure sea area by Gracilaria Greville macrophyte. The ecological method for restoring eutrophication enclosure sea area mainly comprises the following steps: collecting the seedlings of Gracilaria, Gracilaria seedling transportation, domestication in sea area, building a dam and enclosing sea in eutrophication sea area, cutting off the tide of the open sea and carrying out ecological restoration. After the Gracilaria which is cultivated in a large scale in the eutrophication sea area is introduced and cultivated, the Gracilaria can absorb the superfluous dissolution-typed nutrient salt with a great deal for supplying for self-growth, can restrain the explosible growth of monoplast algae meanwhile and can also absorb mud and sand; the Gracilaria can be gained again so as to transfer the nutrient matters in water body out of a pollution system, improve the water quantity and restore the ecology of the sea area; the water body after ecological restoration is exchanged with the environment again, thus achieving the purpose of relieving and eliminating eutrophication of the sea area, eliminating eutrophication can be realized gradually, meanwhile higher economic value can be produced. The method is applicable to carrying out ecological restoration for the eutrophication enclosure sea area.

Description

Technical field: [0001] The invention relates to an ecological restoration method for eutrophication in sea areas, in particular to an ecological restoration method for large seaweeds of the genus Gracilaria to enclose sea areas with eutrophication. Background technique: [0002] Eutrophication has always been a serious ecological problem in the waters outside the Yangtze River Estuary, central and southern Zhejiang, and other coastal waters. The areas with more serious eutrophication include coastal waters such as intensive breeding areas, key sewage outlets, and harbors with poor water exchange. [0003] The eutrophication in coastal waters is formed, and the pollution sources that cause water eutrophication mainly come from land pollution sources such as industrial, agricultural and domestic sewage. It is worth noting that small-scale red tides are more likely to occur in coastal waters such as intensive farming areas, key sewage outlets, and harbors with poor water excha...

AI Technical Summary

Problems solved by technology

[0005] The eutrophication of offshore waters leads to frequent red tides, which has become a serious environmental problem that hinders the sustainable development of the marine economy. Therefore, to reduce the frequency of red tides and reduce the losses caused by red tides, the only thing humans can do is to effectively control seawater eutrophication. Nutritious factors, how to effectively control the eutrophication process of water bodies, and find a technical route that is efficient, economical, practical and even has output benefits, is a realistic topic for researchers and managers

[0006] In general, there are still few examples of overall research on the bioremediation of eutrophic sea areas and the control of red tides through the cultivation of macroalgae, combined with production applications. Transformation from experimental system to large-scale application system

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