Terrace pond construction method and terrace pond structure applicable to hydro-fluctuation belt water bay slope

Abstract

The invention discloses a terrace pond construction method and a terrace pond structure applicable to a hydro-fluctuation belt water bay slope. The method mainly comprises the steps of (1) constructing a 'land-hydro-fluctuation belt-water body' foundation, (2) arranging a water collecting pond, (3) trimming a hydro-fluctuation belt or part of land into a terraced field along the slope, (4) planting floating plants, emergent aquatic plants, hygrophilous plants and damp tolerant plants along the terraced field from bottom to top, and culturing fishes in a water body area, wherein in the terrace pond structure, the slope is in a step structure, at least one water collecting pond is arranged on the step structure, a water sprayer and a water pipeline are arranged in the water collecting pond, a submersible pump is arranged in the water body area, and the water pipeline is arranged at the bottom of the water collecting pond and is communicated with the immersible pump; the height difference between every two adjacent ladders of the terrace field is 0.3-1.5m, and the width of the surface of each ladder is 1.5-15m. The terrace pond structure also has the functions of water-soil high-efficient utilization, non-point source pollution prevention and control and landscape, and is particularly applicable to the hydro-fluctuation belts at reservoirs, rivers or lakes where the bank has a certain slope and the water level variation amplitude is large.

Description

technical field [0001] The invention belongs to the fields of water conservancy, environment and ecological restoration, and relates to a ladder pond construction method and a ladder pond structure suitable for the slope of a water bay in a drawdown area. Background technique [0002] The subsidence area refers to the seasonal fluctuations of water bodies such as reservoirs, rivers, and lakes, which cause the land in the land-water connection zone to be submerged periodically to form an alternating wet and dry zone. The Three Gorges Project formed the world's largest (349km2) 2 ), the largest drop (145-175m altitude, vertical distance up to 30m), opposite to the fluctuation season of natural rivers (the high water level runs at 175m in winter, and the low water level runs at 145m in summer), and has a high degree of landscape heterogeneity (half a year water body, half a year land, with various topography). [0003] As the first ecological barrier area between the water bo...

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Problems solved by technology

However, this production model is only suitable for Jiangsu, Zhejiang and Guangdong, where the terrain is relatively flat. It is rarely used in mountainous and hilly areas, and is only limited to agricultural production. It has a single function and does not give full play to other service functions of the ecosystem.

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