Shoal wetland construction method considering earthwork volume balance and habitat diversity

Abstract

The invention provides a shoal wetland construction method considering earthwork volume balance and habitat diversity, and belongs to the technical field of ecological protection and restoration, and the shoal wetland construction method comprises the following steps: 1) conducting restoration area identification, specifically carrying out identification analysis based on remote sensing data in combination with ecological function partition and landscape pattern current situation; 2) carrying out field investigation on the restoration area mainly aiming at the terrain, the size of the embankment and the growth condition of local plants; 3) selecting a terrain scheme, specifically selecting a terrain construction scheme, and selecting a size; 4) building a terrain; and (5) conducting vegetation three-dimensional configuration, wherein the vegetation is considered from the perspective of emergent aquatic plants, floating plants and submerged plants. Through the design, a land and water transition zone is formed by utilizing terrain construction aiming at the reconstruction problem of the lake dam, so that the flood discharge capacity of the lake is improved, the wetland habitat of the lake is restored, the biological diversity is improved, the stability of an ecological system is improved, and the ecological problem of the hydro-fluctuation zone caused by water level change can be prevented and relieved.

Description

technical field [0001] The invention belongs to the technical field of ecological protection and restoration, and in particular relates to a shoal wetland construction method considering earth volume balance and habitat diversity. Background technique [0002] The wetland ecosystem has a variety of ecological service functions such as slowing floods and stagnation, regulating climate, and maintaining biodiversity. It is one of the three major ecosystems in the world together with oceans and forests. As an important part of natural wetlands, lake wetlands are showing a tendency of shrinking wetland areas and destroying ecological functions due to the impact of climate change and strong human social activities. Artificial reclamation is an important reason for the shrinkage of the major lakes in my country. According to statistics, due to the impact of artificial reclamation, the water surface area of ​​Dongting Lake has increased from 4350km2 in 1949. 2 Reduced to 2691km in ...

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a shoal wetland construction method that considers the balance of earth volume and habitat diversity, which can solve the problem of poor flood flow caused by embankment and embankment of lake wetlands and eliminate the need for earth volume transportation. Considering the balance of earthwork and the construction of shoal wetlands with stable bank slopes, it can form a land-water transition zone while eliminating disorderly enclosures. The setting of water depth gradients provides suitable conditions for various animals and plants such as wading birds and wetland vegetation. Habitat, and ultimately achieve the effect of improving the lake's flood discharge capacity and biodiversity

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