Ecological restoration method for high-hydraulic load artificial lake lakeside zone

Abstract

The invention belongs to the technical field of water ecological restoration and discloses an ecological restoration method for a high-hydraulic load artificial lake lakeside zone. The method comprises the following steps: constructing an ecological enclosure zone in a proper area of the lakeside zone; capturing larger fishes in a water body of the ecological enclosure zone in a fishnet hauling manner, splashing tea bran to kill smaller fishes, fish roes and snails, completing cleaning, transplanting three kinds of plant seedlings such as dwarf eelgrass, hornwort and myriophyllum spicatum, throwing aquatic organism fries such as field snails, mussels, freshwater shrimps, chubs and snakeheads into the water body of the ecological enclosure zone within 1-2 months after growing of the transplanted plants, and finally, throwing high-efficiency compound bacteria into the water body of the ecological enclosure zone, thereby completing restoration. The method disclosed by the invention is obvious in ecological restoration effect and convenient to maintain, the water quality of the lakeside zone restored by the method disclosed by the invention can reach the surface water IV class standard, and the application prospects are good.

Description

technical field [0001] The invention belongs to the technical field of water ecological restoration, and in particular relates to an ecological restoration method for a lakeside zone of a high hydraulic load artificial lake. Background technique [0002] At present, my country's water pollution situation is still severe, the lake ecosystem is damaged, the eutrophication of the water body is serious, and the transparency of the water body is not high. Water ecological restoration is an important method for water pollution prevention and control. The lakeside belt is an important part of the lake ecosystem and an ecological barrier for the protection of lake reservoirs. The ecological restoration of the lakeside zone refers to the ecological restoration of the water-land ecotone of lakes and reservoirs. It is located in the transition zone between the buffer zone and the lake water body, and its core area is the variable amplitude zone between the high water level and the low ...

AI Technical Summary

Problems solved by technology

[0004] However, the above existing technologies still have the following deficiencies: First, the scope of application and conditions are relatively single, and the above technologies are respectively aimed at vertical revetment type, hard revetment belt, lakeside belt in arid areas, and conditions for digging ponds and stacking islands However, for urban artificial lakes and natural lakes of other types (such as slope revetment, soft revetment) or other areas (rainy areas in the south), especially for many large water areas, long shorelines, For urban artificial lakes and natural lakes with high hydraulic load, there are still many technical problems that cannot be solved in the ecological restoration of the lakeside zone

Secondly, the understanding of the lakeside ecosystem is not comprehensive enough. The above-mentioned technologies include biological methods such as microbial attachment (biological rope), terrestrial, wet, emergent, floating leaves, and submerged plant community reconstruction to carry out ecological restoration and purification. Water quality, but ignores the regulation of aquatic animals such as fish and benthic animals, relying solely on microorganisms or aquatic plants to absorb and remove nitrogen and phosphorus in water bodies, it is difficult to establish a complete aquatic ecosystem food chain structure and maintain a long-lasting water purification effect. The reason is that Insufficient understanding of the entire ecosystem

Thirdly, the construction process of the existing technology is relatively complicated and cumbersome, such as the setting of the stepped plant floating bed, the wave-proof layer, the wave-absorbing layer, the wave-absorbing layer suspended with movable foam blocks, the underwater sand-blocking ridge and the bamboo raft floating bed, the biological rope repair area and The technical methods and construction process of setting up water inlets and outlets and return pumps, digging ponds, stacking islands in series with sedimentation ponds, and plant ponds in the lakeside wetland restoration area are cumbersome and require a lot of manpower, material and financial resources

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