Control method of 'artificial lagoon' water body eutrophication in Jin shan urban beach

Abstract

The present invention discloses a method for controlling water eutrophication of the 'artificial lagoon' of the Jinshan city beach, which comprises the following steps: firstly, according to the theory of trophodynamics, aquatic organisms are put into the water of the 'artificial lagoon'of the Jinshan city beach so as to adjust and control the aquatic ecosystem structure, and alga, polychetes, conches, shrimps, crabs and fishes are put into the water sequentially; and secondly, the water quality is detected and the aquatic ecology effect is evaluated. The method restrains the growth of microscopic algae, improves the water quality, improves the circulation rate of nitrogen and phosphorus elements in the ecosystem, enables more nutritive salt to be deposited in the consumers of each trophic level, and controls the growth of the phytoplankton in terms of the aspect of bottom-up effect (nutritive salt) and the aspect of the up-bottom effect (food chain), thereby achieving the aim of controlling the water eutrophication of the 'artificial lagoon' of the Jinshan city beach.

Description

technical field [0001] The invention belongs to the field of aquatic ecological restoration of damaged waters, and in particular relates to a method for controlling the eutrophication of the "artificial lagoon" water body of Jinshan city beach. Background technique [0002] Eutrophication of water body means that under the influence of human activities, a large amount of nutrients such as nitrogen and phosphorus required by organisms enter lakes, reservoirs, rivers and bays and other slow-flowing water bodies, causing algae and other aquatic organisms to multiply rapidly, and dissolved oxygen in water bodies Decline, deterioration of water quality, massive death of fish and other organisms. In recent decades, with the development of the global economy and the increase of human activities, water eutrophication has gradually become one of the major global environmental problems. [0003] Water eutrophication prevention and control is a worldwide problem. Since the 1960s, cou...

AI Technical Summary

Problems solved by technology

However, the above-mentioned technologies all achieve the purpose of controlling eutrophication by regulating a single aquatic animal; in addition, these technologies may only be suitable for inland freshwater lakes, but for water bodies such as rivers, bays and "artificial lagoons" Eutrophication control needs to explore new technologies and methods

[0005] Through the monitoring of the water environment and aquatic ecology of Jinshan City Beach, the main problems in the aquatic ecosystem of the "artificial lagoon" are as follows: the concentration of inorganic nitrogen and inorganic phosphorus is high, and according to the "Sea Water Quality Standards", they are all above Class IV, and primary producers The composition is single, the species abundance, biomass and biodiversity of zooplankton, benthos and swimming animals are low, and the community structure is unstable, and the composition of fish functional groups is dominated by carnivorous fish, etc.

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