Artificial macroalgae field in mixed seawater area and construction method thereof

Abstract

The invention discloses an artificial macroalgae field in a mixed seawater area and a construction method thereof. The artificial macroalgae field comprises an artificial algal reef, and at least one layer of flexible artificial algal bed is arranged on the artificial algal reef; the artificial algal reef is a hollow triangular prism-shaped or triangular pyramid-shaped prefabricated member and provided with mooring rope fixed holes, and a seedling net is sleeved on the surface of the artificial algal reef; and the flexible artificial algal bed comprises a square framework formed by framework ropes, the square framework is provided with a float and at least provided with a seedling rope in longitudinal, the total buoyancy of the float is larger than the gravity of the flexible artificial algal bed, and the mooring rope is arranged on each corner of the square framework and fixedly connected with the mooring rope fixed holes. The invention is the artificial macroalgae field in the mixed seawater area, which has the characteristics of strong sea current resistance, high sand coverage resistance of mud, and high algal field efficiency. The constructed artificial algal field is stable and stereoscopic, is suitable to the characteristics of the mixed seawater area, can be adnated with larger biomass of macroalgae of more species groups and, and lays foundation for the ecological restoration of the mixed seawater area.

Description

technical field [0001] The invention relates to an artificial algae field, in particular to a method for constructing a large seaweed artificial algae in a muddy sea area. Background technique [0002] Large seaweeds such as copper algae, pegasus, wakame and seaweed are important species for ecological restoration of the marine environment. The algae fields formed by large seaweeds are not only habitats, growth and breeding places for marine animals, but also the basis for environmental purification and ecological balance in the sea area species. Due to global warming, environmental pollution, human excavation and development, etc., the number and scale of natural algae fields of macroalgae have been greatly reduced, and the natural ecological resources have been severely damaged. For example, in the shallow sea reef area of ​​Nanji Island, the survey in 1980 found that there were 5 natural copper algae fields, each with an area of ​​600m 2 Above, the total area is about 2...

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Problems solved by technology

[0003] At present, the main goal of ecological restoration is to build an artificial algae field. For example, the publication number is CN101341851, and the invention patent application titled "an artificial algae field and its construction method" is The cage-type artificial algae field sunk into the seabed is disclosed. The cage-type artificial algae field is not only susceptible to the influence of ocean currents, but also easily covered by sediment in the muddy sea area, losing the function of the algae field

The publication number is CN101326894, and the invention patent application titled "an artificial algae field and its construction method" also discloses an artificial algae field composed of unit grids that sink into the seabed. As a fixed object, the net rope is a large seaweed attachment. If the sinking stone is heavy enough, it can resist the current, but the artificial algae field is basically close to the seabed and cannot resist the sediment cover, so it will be lost under the sediment cover. The function of the algae field loses the role of ecological restoration

The muddy water sea area is located in the river estuary area, where the sediment washed by the river is deposited. It is difficult to form a natural algae field of large algae. Only benthic macroalgae can grow, the population is small, and the artificial algae reef is easily covered by sediment, resulting in low efficiency of the algae field, so it is difficult to establish an efficient macroalgae artificial algae field in the muddy water area

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