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River ecological flow determining method with benthos diversity as target

A technology of ecological flow and benthic organisms, which can be used in general water supply conservation, special data processing applications, instruments, etc., and can solve unseen problems.

Inactive Publication Date: 2018-01-19
CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Invention patent "Estimation method of estuary ecological water demand based on shellfish-coupled biomarker response (application number: 2014107271517)", although aquatic shellfish are used as indicator organisms, it belongs to the field of estuary ecological water demand calculation. Inventions are also obviously different; the invention patent "Bathythometer for Environmental Flow Estimation Method for Benthic Animal Protection Target" (application number: 201510350529) mentions the ecological water requirement of benthic animals, but it is actually a kind of water measurement The patent of the instrument is not a patent on the research method of ecological water demand, which is completely different from the present invention
[0005] Therefore, there are currently no related patents on the method of determining the ecological water demand of rivers using benthic animals as indicator organisms

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  • River ecological flow determining method with benthos diversity as target
  • River ecological flow determining method with benthos diversity as target
  • River ecological flow determining method with benthos diversity as target

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Embodiment Construction

[0035] The specific process and technical solutions of the present invention will be clearly and completely described below in conjunction with the specific application process in the Huayuankou section of the middle and lower reaches of the Yellow River.

[0036] The present invention provides a method for determining ecological flow with the aim of benthic biodiversity, and the threshold of habitat characteristic parameters is as follows: figure 1 As shown, the method

[0037] The specific implementation process is as follows:

[0038] 1) Select the appropriate research section

[0039]After determining the research river, carry out proper investigation on the river, and select the river section suitable for ecological flow research. On the one hand, the habitat diversity of the research river section should be relatively high, and the river surface should be relatively wide (deep V-shaped channel is not suitable for this method). On the other hand, it is best to have a wa...

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Abstract

The invention provides a river ecological flow determining method with the benthos diversity as a target. By means of the method, the research methods of ecological water requirements are enriched, and meanwhile, the ecological flow determining method with benthos as indicator organisms is provided. The method comprises the steps that river segment selection is researched; the benthos in a river segment are researched and ecological environment elements are inspected on site; the type of a benthos habitat and the characteristic parameter threshold value of the benthos habitat are determined; the optimal type of the benthos habitat which maintain the benthos diverse is determined; the fluvial geomorphology measurement of the river segment is researched; a two-dimensional hydrodynamics modelis constructed; the benthos habitat of the river segment is simulated in different flows; the optimal flow for maintaining the benthos diverse is determined. The method has the advantages that the ecological flow which enables the benthos diversity to be highest can be very accurately obtained, and the problem that by means of a general ecological flow determining method, the result cannot reflect the actual demands of aquatic organisms is solved.

Description

technical field [0001] The invention belongs to the field of ecological water conservancy, and relates to a river ecological flow determination method aiming at benthic biological diversity. Background technique [0002] Natural water regimes are key to the health and integrity of river ecosystems and are the primary drivers of the diversity and abundance of river-floodplain ecosystems. During the long-term evolution process, different biological groups have gradually formed life history strategies that are compatible with natural water flow regimes. However, in modern times, many human activities, such as the continuous construction of various water-related projects, the massive discharge of pollutants, and the acceleration of urbanization, have changed the natural water flow system of the river and replaced it with an artificial water flow system. It may meet the water demand for hydropower, irrigation, industry and agriculture, and life for human development, but its hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCY02A20/152
Inventor 赵伟华李翀郭伟杰贡丹丹曹小欢
Owner CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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