Ecological repair method for shallow water lake shore zone

Abstract

The invention relates to an ecological restoration method for lakeshores, in particular to an ecological restoration method for the lakeshore of shallow lakes, which comprises the following steps: a. selection of a region: a region with water eutrophication, rich nutrient salts in lake sediment and serious water pollution is selected as a restoration region; b. setting of wave-resistant layer; c. setting of wave-absorbing layer; and d. seasonal ecological restoration. The submerged plants of the ecological restoration method alternate seasonally and each season has pioneering varieties which can improve and stabilize the water environment; a finely divided aquatic plant community is formed by the combination of emerging plant community, floating plant community, floating leaf plant community and submerged plant community; ecological restoration synthesis technique measures such as microorganism, fish, seashell, aquatic plant and the like are adopted and no secondary pollution is generated; and the ecological restoration method is characterized by short cycle, low investment, remarkable treatment effect and obvious social effect, ecological effect and economic effect.

Description

technical field [0001] The invention relates to a method for ecological restoration of a lakeside zone, in particular to a method for ecological restoration of a lakeshore zone of a shallow lake. Background technique [0002] Eutrophication refers to the large amount of inorganic nutrients such as nitrogen (N) and phosphorus (P) required by organisms entering lakes, estuaries, bays and other relatively closed or slow-flowing water bodies. Under the combined action of factors, the rapid reproduction of algae and other plankton is caused, resulting in the outbreak of algal blooms (red tides). In some cases, it may also lead to a decrease in dissolved oxygen in the water body, deterioration of water quality, and even mass death of fish and other aquatic organisms. [0003] my country is a country with many lakes, more than 1km 2 There are more than 2,300 natural lakes in China, with a total area of ​​70,988km 2 , accounting for about 0.8% of the total land area of ​​the coun...

AI Technical Summary

Problems solved by technology

[0027] Although lake ecological restoration is considered to be the main means of controlling lake eutrophication, when implementing lake ecological restoration projects, due to various reasons, insufficient restoration measures are still taken. For example, the so-called biological floating island technology has not been adopted. Sufficient intensity or quantity of biological measures, the ability to absorb pollution sources is extremely limited, and cannot fundamentally reverse the process of lake eutrophication

[0028] 2. Insufficient understanding of the mechanism of lake eutrophication and inappropriate ecological restoration methods

[0029] It is shown that the research and engineering practice of lake eutrophication control technology pay more attention to a single element, ignoring the overall function of the ecosystem; improper technology selection, lack of coupling and integration research on various technologies, and the lack of engineering measures. Applicability, the integrated application of different technology combinations and the impact of engineering technology measures on the overall function of the lake ecosystem are not enough, which leads to the lack of systematic and long-term consideration of technology application and engineering practice