River channel ecological restoration method based on demand of aquatic organisms for hydrological conditions

A technology for ecological restoration and aquatic organisms, applied in botany equipment and methods, water conservancy engineering, plant cultivation, etc., can solve unsatisfactory restoration effects, lack of quantitative understanding of ecological restoration boundary conditions, little consideration of hydrological and habitat conditions of aquatic organisms To achieve the effect of increasing the diversity of habitats, improving the natural landscape, and increasing the diversity of flow regimes

Inactive Publication Date: 2020-04-28
INST OF AQUATIC LIFE ACAD SINICA
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Problems solved by technology

These technologies mainly start from the perspective of hydrology and water conservancy, rarely consider the needs of aquatic organisms for hydrological and habitat conditions, and lack the quantitative understa

Method used

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  • River channel ecological restoration method based on demand of aquatic organisms for hydrological conditions
  • River channel ecological restoration method based on demand of aquatic organisms for hydrological conditions

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Embodiment

[0048] Inventors such as Liu Xueqin of the Institute of Hydrobiology, Chinese Academy of Sciences carried out ecological restoration of a certain plain river channel A according to the plan, and the specific process is as follows:

[0049] (1) Investigate and survey the current status of the river: determine the shape of the river, the average water depth of the river, the bottom quality, the average water level, the lowest water level, the highest water level of the river in the past 2-5 years, and the average water level of the spring plant germination period.

[0050] Plain channel A: After investigation and survey of the channel, it was found that the channel is a straight channel with a width of 40m, an average water depth of 1.5m during the investigation period, the bottom is silt, and the shoreline is a hardened artificial embankment.

[0051] The average water level of the river is 19.5m for many years, the lowest water level is 18.0m, and the highest water level is 22....

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Abstract

The invention discloses a river channel ecological restoration method based on a demand of aquatic organisms for hydrological conditions. The river channel ecological restoration method includes the steps that firstly, a river channel is investigated and surveyed, then the location of an ecological restoration area is determined, spur dikes are arranged, a deep pool is formed by dredging, flood plain is constructed, and a planting area of ecological restoration plants is determined. According to the demand of the aquatic organisms for hydrological and habitat conditions, river channel configuration is appropriately transformed, meanwhile suitable aquatic organisms are arranged in different habitat areas, so that a river channel ecosystem is effectively restored, the self purification capacity of the river channel is improved, the biodiversity is restored, and the function of the ecosystem is enhanced. Meanwhile, the river channel ecological restoration method can increase the stabilityof the river embankment without affecting the flood discharge capacity of the river channel, and has excellent effects in improving an ecological function, a landscape function and a social functionof a river.

Description

technical field [0001] The invention relates to the technical field of river ecological environment management, in particular to a river ecological restoration method based on the hydrological condition requirements of aquatic organisms. Background technique [0002] Natural river channels are varied in shape, including deep pools, shallow settlements, floodplains and other diverse habitat types, and the biological habitats are highly heterogeneous, providing high-quality feeding and habitat for aquatic plants, benthic animals, fish and water birds, etc. Sites play an important role in the maintenance of biodiversity and ecosystem functions. Considering the needs of flood control, power generation, shipping, irrigation, etc., most rivers in the world have undergone artificial transformation, including damming, cutting and straightening, channelization, and hard revetment. While these river improvement projects have brought huge social and economic benefits, they have also l...

Claims

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Application Information

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IPC IPC(8): E02B1/00E02B3/00E02B3/06A01G22/00
CPCA01G22/00E02B1/00E02B3/00E02B3/06Y02A20/402
Inventor 刘学勤申明华王姝然徐强强
Owner INST OF AQUATIC LIFE ACAD SINICA
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