Ecological repairing method of porphyry macroalgae to eutrophic open sea area

Abstract

The invention relates to an ecological repairing method of porphyry macroalgae to an eutrophic open sea area, which is mainly characterized by comprising the following steps: firstly, selecting a cultivating area; secondly, fabricating a raft frame and a lace curtain of a cultivating facility; thirdly, pulling seedlings of conchospores cultivated by a seedling net, conveying the seedling net, hanging the lace curtain and managing in a seedling stage; fourthly, managing the cultivation of raped porphyry macroalgae; fifthly, picking the ripe porphyry macroalgae; and sixthly, measuring nitrogen and phosphorus in texture. Purpuralgen is cultivated in the eutrophic open sea area, on the one hand, necessary nutrient substances are provided for the purpuralgen, on the other hand, nutrient substances in sea can be transformed out of a pollution system through the harvest of the purpuralgen, therefore, the application of the ecological repairing method can achieve the purpose of releasing and eliminating eutrophication, and also obtains higher economical value.

Description

Technical field:

[0001] The invention relates to an ecological restoration method for eutrophication, in particular to an ecological restoration method for macroalgae of the genus Porphyra in open 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. According to the 2007 China Marine Environmental Quality Bulletin released by the State Oceanic Administration, the heavily polluted waters in the East China Sea are mainly concentrated in the Yangtze Estuary, Hangzhou Bay and the coast of Ningbo. The main pollutants are active phosphate, inorganic nitrogen and petroleum. The pollution sources that cause water eutrophication mainly come from land-based...

Examples

Embodiment Construction

[0028] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] The method for ecological restoration of Porphyra genus large seaweed of the present invention to the eutrophication open sea area, the implementation process is as follows:

[0030] (1) Selection of sea area for cultivation. The eutrophication sea area for cultivation should choose an offshore radiation sandbar far from the shore. The bottom material should be sandy or silty. The area with 4-5 hours of dry dew in the spring tide should be selected to ensure that the seedling net is clean, reduce the adhesion of miscellaneous algae, improve the robustness of the seedlings, and facilitate the attachment of single spores. The tide level for vegetable cultivation should be 2.5- The area of ​​4.5 hours is appropriate. According to the change of climate, the tide level should be adjusted appropriately. In years with less rain, the cultivation...

Technical field:

[0001] The invention relates to an ecological restoration method for eutrophication, in particular to an ecological restoration method for macroalgae of the genus Porphyra in open 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. According to the 2007 China Marine Environmental Quality Bulletin released by the State Oceanic Administration, the heavily polluted waters in the East China Sea are mainly concentrated in the Yangtze Estuary, Hangzhou Bay and the coast of Ningbo. The main pollutants are active phosphate, inorganic nitrogen and petroleum. The pollution sources that cause water eutrophication mainly come from land-based...

Examples

Embodiment Construction

[0028] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] The method for ecological restoration of Porphyra genus large seaweed of the present invention to the eutrophication open sea area, the implementation process is as follows:

[0030] (1) Selection of sea area for cultivation. The eutrophication sea area for cultivation should choose an offshore radiation sandbar far from the shore. The bottom material should be sandy or silty. The area with 4-5 hours of dry dew in the spring tide should be selected to ensure that the seedling net is clean, reduce the adhesion of miscellaneous algae, improve the robustness of the seedlings, and facilitate the attachment of single spores. The tide level for vegetable cultivation should be 2.5- The area of ​​4.5 hours is appropriate. According to the change of climate, the tide level should be adjusted appropriately. In years with less rain, the cultivation...

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