Method for building green curtain suitable for steep slope type hydro-fluctuation belt and green curtain flotation devices

Abstract

The invention discloses a method for building a green curtain suitable for a steep slope type hydro-fluctuation belt and green curtain flotation devices. The method includes the steps of planting climbing plant units resistant to water logging on a bank belt with large water-level fluctuation, fixing the flotation devices to the climbing plant units, utilizing biological ropes for connecting the flotation devices on the adjacent climbing plant units to be in a net shape, and the like. Each flotation device comprises multiple bamboo joint units connected in series and wave-attenuating cages connected to one end of the series of bamboo joint units, and the bamboo joint units and the wave-attenuating cages are connected through the biological ropes. The green building method and the flotation devices can flexibly deal with increasing and decreasing of the water level, not only can quickly afforest the hydro-fluctuation belt after the water level is decreased, but also can reduce the erosion effect of waves to the bank belt after the water level is increased; climbing plants forming a green curtain can also intercept non-point source pollution of the upstream of the bank belt, thereby reducing loads of pollutants in water.

Description

technical field [0001] The invention belongs to the field of greening engineering, and in particular relates to a method for constructing a green curtain suitable for a steep-slope type water-fluctuation zone and a floating device thereof. Background technique [0002] The ebb and flow zone refers to the seasonal fluctuations of water bodies such as reservoirs, rivers, and lakes, and the alternating dry and wet areas formed by the periodic inundation of the land in the land-water connection zone. The Three Gorges Project formed the world's largest (about 349km2) 2 ), the largest drop (145-175m above sea level, vertical distance up to 30m), opposite to the fluctuation season of natural rivers and highly heterogeneous landscape (half year water body, half year land area, diverse terrain). As the first ecological barrier area between the water body and the shore, the health of the ecosystem in the hydrofluctuation zone is directly related to the water quality safety, ecologica...

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Problems solved by technology

But as far as the current practice is concerned, there are some problems in this type of technology: (1) the plants screened are not suitable for large water level changes, and dead and rotten plants will cause secondary pollution after entering the water body; The land is transformed by means of excavation and backfilling, planting and planting, which is essentially a kind of damage to the coastal zone ecosystem.

Although a "leavealone (non-intervention theory)" concept of ecological restoration has been proposed abroad, this theory is only suitable for areas with less human activities, and is not suitable for the towns in the reservoir area built along the river, with a large population and high ecological pressure. drop belt

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