Ecological restoration method for large eutrophication algae type lake waterscape area

Abstract

The invention belongs to the technical field of ecological environment, and particularly relates to an ecological restoration method for a large eutrophication algae type lake waterscape area. According to the ecological restoration method, a waterscape area to be restored is separated from an external large lake area by a soft algae blocking fence and an ecological wave eliminating zone, so that invasion of bloom-forming cyanobacteria of the external lake area and wave are reduced; then an algae discharge door is arranged at the shore sides of the upwind direction and downwind direction of the waterscape area, so that blue-green algae of the waterscape area and invading from external area is discharged timely by natural wind; finally, emergent aquatic plants with strong stress resistance and good visual effect are planted in shoal waters of the shore of the waterscape area, submerged plants and floating-leaved plants are planted outside the emergent aquatic plant area, and floating plants are planted in an abyssal region. The algae bloom of the whole waterscape area is gradually and effectively controlled under the combined action of internal effect and external effect, aquatic plants and hygrophyte colonies are gradually increased, the water transparency is obviously improved, and ecological service functions of the landscape are gradually restored.

Description

technical field [0001] The invention belongs to the technical field of ecological environment, and in particular relates to an ecological restoration method of a large-scale eutrophic algae-type lake water scenic spot. Background technique [0002] At present, many large lakes in my country have serious eutrophication problems. Due to the frequent occurrence of cyanobacteria blooms caused by eutrophication of water bodies, they often have a serious impact on the landscape of shore water scenic spots and tourists. A large number of blooms and cyanobacteria float on the water surface, which not only affects the visual landscape, but also seriously reduces the transparency of the water body, making it difficult for submerged plants and aquatic turbulence to survive, and the bottom mud is more likely to appear, which further affects the water quality and quality of the water scenic spot. senses, forming a vicious circle. In addition, after a large number of cyanobacteria die, ...

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Problems solved by technology

[0003]The control of eutrophication and ecological restoration of large lakes is often a process with huge investment and a long time, but the water quality in a large area has not been significantly improved and Before the cyanobacteria bloom is effectively controlled, using a small amount of investment to effectively control the water bloom cyanobacteria in the water scenic spot in a short period of time, improve the transparency of the water body, and restore the aquatic ecosystem is still a difficult problem that has not been well solved

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