Process for constructing river channel ecological system of hard revetment by aid of cofferdams and floating beds

A technology of river ecosystems and cofferdams, applied in river regulation, monitoring of invasive species, sustainable biological treatment, etc., can solve problems such as difficult realization of water ecosystems, inability to survive and destroy emergent and submerged plants, etc. Achieve the effect of being conducive to large-scale promotion, rapid and effective water ecosystem, and low cost

Inactive Publication Date: 2013-12-04
SHANGHAI NAN YANG MODEL HIGH SCHOOL
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Problems solved by technology

On the one hand, it is due to the damage to the water ecosystem caused by the hard revetment, and on the other hand, due to the effect of the river tide, emergent plants and submerged p

Method used

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Embodiment

[0021] (1) Carry out hydrological investigation, measure the water flow velocity v=5m / s, the average water depth is 1.2m, and the tidal drop h=10cm, and according to the measured data, build 3 parallel rivers along the vertical direction of the water flow on the shore of the hard revetment. The cofferdams are fixed with wooden piles, an ecological restoration area is formed between the cofferdams, a light-transmitting floating bed is set on the water surface between the cofferdams, the floating bed is fixed on the cofferdam by ropes, and a bacterial film hanging curtain is set on the offshore side of the floating bed; The cofferdam spacing is 8m, and the cofferdam height is 1.1m;

[0022] (2) Pioneer species of submerged plants such as hornwort and chrysoprase are planted in the ecological restoration area for preliminary restoration; hornwort and chrysoplasty are species with strong pollution resistance, which are conducive to the formation of beneficial bacterial films for th...

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Abstract

The invention discloses a process for constructing a river channel ecological system of a hard revetment by the aid of cofferdams and floating beds. The process include steps of performing hydrological investigation to measure water velocities, water depths and tidal slopes, constructing a plurality of parallel cofferdams along the direction perpendicular to water flows on the sides of the hard revetment according to measured data, fixing the cofferdams by the aid of wood piles, forming ecological restoration zones among the cofferdams, arranging the floating beds on water surfaces among the cofferdams and arranging fungus membrane curtains on offshore sides of the floating beds; planting pioneer species of submerged plants in the ecological restoration zones and performing initial restoration on the ecological restoration zones; planting a plurality of extension species of submerged plants in the ecological restoration zones; performing biological diversity extension, and then regularly removing invasive species when the extension species advantageously grow in the ecological restoration zones. The process has the advantages that the water ecological system of the hard revetment can be quickly and effectively restored by the process, the cost is low, and the process is favorable for large-area popularization.

Description

technical field [0001] The invention relates to a process for constructing a hard revetment river ecosystem by using a cofferdam and a floating bed, and belongs to the field of river water environment management and ecological restoration. Background technique [0002] The river ecosystem is an important part of the natural ecosystem, and it is of great significance to maintain the diversity of the ecosystem. However, with the continuous acceleration of the urbanization process, human beings continue to invade the natural ecological field, causing huge damage to many original ecological systems. For example, in many places, the waterfront of the river is built into a hard revetment, which has caused huge damage to the original water ecosystem, significantly reduced biodiversity, and caused a decline in water quality, and the landscape value of the river bank has also been greatly affected. [0003] For this reason, people have spent a lot of effort to manage, but the cost i...

Claims

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Application Information

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IPC IPC(8): E02B3/02C02F3/32C02F3/34
CPCY02A90/40Y02W10/10
Inventor 王臻吴国华冯奕恺肖宇宸张也弛
Owner SHANGHAI NAN YANG MODEL HIGH SCHOOL
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