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Cascade reservoir hydrological ecological scheduling effect evaluation method based on fuzzy comprehensive evaluation method

A fuzzy comprehensive evaluation, cascade reservoir technology, applied in data processing applications, instruments, calculations, etc., can solve the problems of unsatisfactory reservoir dispatching effect and lack of ecological dispatching effect evaluation system, and achieve rapid evaluation, convenient calculation, and accurate evaluation. Effect

Pending Publication Date: 2022-05-27
SICHUAN UNIV
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Problems solved by technology

Although some reservoirs have carried out reservoir regulation in combination with the eco-hydraulic requirements of fish spawning and reproduction, the eco-hydraulic requirements are relatively lacking in the evaluation system for the ecological regulation effect, and the actual reservoir regulation effect is not ideal

Method used

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  • Cascade reservoir hydrological ecological scheduling effect evaluation method based on fuzzy comprehensive evaluation method
  • Cascade reservoir hydrological ecological scheduling effect evaluation method based on fuzzy comprehensive evaluation method
  • Cascade reservoir hydrological ecological scheduling effect evaluation method based on fuzzy comprehensive evaluation method

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Embodiment 1

[0085] In this example, the monitoring data collected in Xiangjiaba Reservoir during the spawning period (May to July) of drifting fish from 2018 to 2020 is used as an example to evaluate the effect of the hydrological ecological regulation of cascade reservoirs based on the fuzzy comprehensive evaluation method provided by the present invention. The evaluation method is explained in detail.

[0086] The method for evaluating the effect of hydrological ecological regulation of cascade reservoirs based on the fuzzy comprehensive evaluation method provided in this embodiment includes the following steps:

[0087] S1 performs principal component analysis on the historical hydrological index data of the reservoir to determine the weight of the hydrological evaluation index; the weight of the hydrological evaluation index and the weight of the water temperature evaluation index are obtained to obtain the weight of the ecological hydraulic evaluation index.

[0088] The hydraulic pa...

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Abstract

The invention discloses a fuzzy comprehensive evaluation method-based cascade reservoir hydrological ecological scheduling effect evaluation method, which comprises the following steps of: firstly, determining weights of indexes related to spawning of drifting fishes based on a principal component analysis method, and then determining membership degrees of the indexes under different suitable grades based on membership degree functions of the indexes; a fuzzy relation comprehensive evaluation matrix is constructed, a total evaluation vector is obtained according to the weights of the related indexes and the fuzzy relation comprehensive evaluation matrix, and finally a fuzzy comprehensive evaluation value used for evaluating the fish spawning and mirror growing suitability and the reservoir ecological scheduling effect is obtained based on the weighted average principle. The influence of the flow velocity, the water temperature, the daily average water rising rate of the water level, the water rising duration and other elements on fish spawning is comprehensively considered, so that the habitat suitability of fish spawning and the ecological scheduling effect of the reservoir can be accurately evaluated.

Description

technical field [0001] The invention belongs to the technical field of water resource management of reservoirs, relates to research on hydrological ecological dispatching of cascade reservoirs, and in particular relates to a fuzzy comprehensive evaluation method for evaluating the effect of hydrological ecological dispatching of cascade reservoirs. Background technique [0002] Human activities such as the construction of hydropower projects and river development have made the structure of river ecosystems gradually degraded. As consumers of aquatic ecosystems, due to the impact of hydropower development and construction, the water environment required by their habitats will change, such as low-temperature water discharge from power stations, weakened flood peak process, difficult to fully meet the conditions of rising water, and clear water discharge, etc. All of them have affected the reproduction and growth of fish in the protected area to varying degrees. [0003] In or...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06G06Q50/26
CPCG06Q10/06393G06Q50/06G06Q50/26Y02A10/40
Inventor 邓云脱友才王兴敏杨颜菁李永王浩宇
Owner SICHUAN UNIV
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