Method for restoring ecology integrating substrates, hydrology and organisms in bank collapse lakeside

Abstract

The invention discloses a method for restoring ecology integrating substrates, hydrology and organisms in a bank collapse lakeside. The method comprises the steps of: firstly, carrying out necessary slop cutting on high banks or abrupt slopes according to the slop condition of a lakeshore line, and enlarging the depth of plants for protecting the lakeshore to the maximum; secondly, selecting different types of plants for restoration according to the fluctuation rule of the water level in a lake reservoir and different range areas of the lakeshore line; cultivating different types of or mixed matching of plants, such as arbor, shrub and grasses, for restoration in places above the highest water level, and cultivating emergent aquatic plants with a strong root system and high fixation strength for restoration in places below the highest water level; and thirdly, for the restoration of places below the highest water level by using the emergent aquatic plants, selecting a drought period before and after the spring; carrying out tunneling operations by using a hydraulic dredge; arranging two wave-damping dams along the lakeshore line; using a shallow water area near the inner side of the dam as a restoration growing area of the emergent aquatic plants; and restoring the emergent aquatic plants by subculturing the roots and the stems. The invention provides a technical method which can be carried out in a large-scale engineering manner by integrating substrate restoration, hydrology restoration and organism restoration, and the natural ecological structures and the landscapes ofthe lakeside are restored to the maximum.

Description

technical field [0001] The invention relates to the eutrophication control and ecological restoration of lake reservoirs, in particular to the ecological reconstruction after the ecological degradation of the easy-to-collapse shoreline. Background technique [0002] The lakeside belt is an important storage and consumption place for surface sources entering the lake, and it is also a special ecosystem with rich biodiversity. It is an important gene bank and seed bank for the lake. Therefore, the ecological restoration of the lakeside zone has always been an important part of the treatment of eutrophication in lake reservoirs. In practice, people have gradually realized that the ecological restoration of the lakeside zone is not simply planting flowers and grass or releasing insects to raise fish. A healthy lakeside ecosystem not only includes all levels of biological communities in the food chain, but also must provide substrates, hydrological conditions suitable for their s...

AI Technical Summary

Problems solved by technology

First of all, the slope soil that is prone to collapse is difficult to stay on the lakeside under the erosion of wind and waves, resulting in mostly hard-bottomed lake beds in the nearshore zone, and the substrate conditions are not difficult to meet the requirements for the recovery of aquatic plants; secondly, due to the lack of effective protection of vegetation, Causes hydraulic erosion to intensify the erosion of the lakeshore, and aquatic plants are vulnerable to hydraulic shear damage during the recovery growth period

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