River ecological water demand determination method

A technology to determine the method and water demand, applied in general water supply conservation, instruments, data processing applications, etc., can solve the problems of affecting the ecological maintenance effect of the river channel and inaccurate water availability

Active Publication Date: 2020-01-14
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

However, in reality, water use in a river is usually carried out in a certain section of the river rather than in the entire river. For example, water in the lower reaches of the river will not affect the ecology of the upper reaches of the river. It is inaccurate to determine the available water volume of the river section, and it will also affect the maintenance effect of the river ecology

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[0110] Table 1 Cross-section characterization rate table

[0111]

[0112] Thus, the guarantee rate of each year within the target time period can be obtained, and the target guarantee rate can be further determined, for example, the target guarantee rate can be determined to be 90%.

[0113] Step S112: Obtain the target time flow in the corresponding year according to the target guarantee rate, and obtain the target time flow under the target guarantee rate.

[0114] After the target guarantee rate is determined, further search for the year corresponding to the target guarantee rate, and then obtain the target time flow according to the year.

[0115] For example: based on the results in Table 1, when the target guarantee rate is determined to be 90%, 1970, the closest guarantee rate of 91.18%, can be determined as the target year, and then the daily natural flow of the section in 1970 can be obtained, and then the target time can be obtained Flow, when the target time is...

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Abstract

The embodiment of the invention provides a method for determining the ecological water demand of a riverway. The method comprises the steps: determining a riverway section which is a section capable of obtaining the natural flow of the section in preset time; according to the section natural flow of the river channel section within the preset time, obtaining the target time flow of the river channel section; according to the suitability level of the river channel ecological water demand and the target time flow, determining the target time section ecological flow of the river channel section under different suitability levels corresponding to the target time; and determining the flow of the ecological water demand at least based on the ecological flow of the target time section. Accordingto the method for determining the ecological water demand of the riverway provided by the embodiment of the invention, the accuracy of determining the ecological water demand of the riverway can be improved, and the effect of ecological maintenance of the riverway is improved.

Description

technical field [0001] The embodiments of the present invention relate to the field of water resource ecology, and in particular to a method for determining the ecological water demand of a river course. Background technique [0002] In recent years, many human activities such as the continuous construction of wading projects, large-scale discharge of pollutants, and urbanization have changed the natural process of the river, making the river unable to meet the needs of various organisms and a series of ecological processes in the river and riparian zone. In the long run, it will lead to a decline in the species diversity of river ecosystems, and many endangered species are on the verge of extinction. [0003] In order to avoid the occurrence of the above situation, a research method on ecological water demand is proposed to obtain the water demand that meets the ecological requirements. Among them, the ecological water demand of the river refers to the amount of water requi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/26
CPCG06Q10/04G06Q50/26Y02A20/152
Inventor 秦天玲刘芳严登华聂汉江王建伟侯红雨刘柏君刘姗姗
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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