Underwater topographical structure used to water body ecological restoration

Abstract

The invention provides an underwater topographical structure used to water body ecological restoration. The underwater topographical structure includes at least one ecological restoration unit; each ecological restoration unit includes a first plantation belt used to plant shallow submerged plant species, a second plantation belt used to plant deep submerged plant species and a winrow; the water depth of the first plantation belt is smaller than the water depth of the second plantation belt; the water depth of the second plantation belt is smaller than the water depth of the winrow; a first grading slope is arranged between the first plantation belt and the second plantation belt; a second grading slope is arranged between the second plantation belt and the winrow. According to the underwater topographical structure provided by the invention, proper water depth and living environmental requirements for different submerged plants are utilized, the underwater topographical structure is established according to water depth gradient, proliferation and extension of pioneering species and a minority of competitive plants caused by homogenization of the habitat is avoided, simultaneous growth of various submerged plants in the same water body is realized, and biodiversity of water body species is enriched.

Description

technical field [0001] The invention relates to the technical field of ecological environment engineering, in particular to an underwater terrain structure used for ecological restoration of water bodies. Background technique [0002] Submerged plants are an important part of the aquatic ecosystem. Lake water bodies rich in submerged plants are characterized by clear water quality, high dissolved oxygen, low algae density, and high biodiversity. A large number of studies have shown that submerged plants can absorb nitrogen and phosphorus nutrients in the water body, increase dissolved oxygen in the water body, inhibit the resuspension of lake sediments and inhibit the growth of plankton, and can provide bait and habitat for aquatic animals such as fish. Improving the biodiversity and stability of aquatic ecosystems and controlling water eutrophication have important ecological values. Therefore, submerged plants are widely used in the treatment of eutrophic water bodies, th...

AI Technical Summary

Problems solved by technology

At present, lake eutrophication control and water ecological restoration pay more attention to water quality conditions and the species configuration of submerged plants, while ignoring the creation of underwater topographic habitats suitable for the growth of submerged plants, resulting in the emergence of pioneers caused by habitat homogeneity. Species or a small number of submerged plants with strong competition proliferate and spread in a large area, causing problems such as single species of aquatic plants in the lake water body and decline in biodiversity; The accumulation of water bodies will cover the water surface, reduce the light transmittance of the water body, inhibit underwater photosynthesis and fish respiration, adversely affect the health and stability of the water body ecosystem, and increase the difficulty of harvesting submerged plants and management costs

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