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River ecological risk evaluation method based on ecological deficit index

An ecological risk and deficit technology, applied in the direction of electrical digital data processing, instruments, complex mathematical operations, etc., can solve the problems of not being able to obtain ecological risks, evaluate the health status of river ecosystems, etc., and achieve the goal of improving river management level and improving practicability Effect

Pending Publication Date: 2022-02-11
HENAN UNIVERSITY
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Problems solved by technology

However, the above methods cannot obtain the ecological risk on a larger time scale (season, year), cannot evaluate the health status of the river ecosystem on different time scales, and cannot comprehensively assess the ecological risk for the river management department, systematically build an ecological risk early warning mechanism, and implement scientifically. Effective support for risk management

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  • River ecological risk evaluation method based on ecological deficit index
  • River ecological risk evaluation method based on ecological deficit index
  • River ecological risk evaluation method based on ecological deficit index

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Embodiment Construction

[0038] In order to show the purpose and technical solutions of the present invention more clearly, taking the Xiaolangdi Hydrological Station of the Yellow River as an example, the present invention will be further described in detail in conjunction with the accompanying drawings. The specific implementation steps are as follows figure 1 :

[0039] Step 1. Collect the long-sequence daily flow data of the analyzed hydrological station, and divide the time series into the pre-reservoir construction time series and the post-reservoir construction time series according to the official operation time of the upstream reservoir of the hydrological station; specifically include:

[0040] The yearly daily flow data of the Xiaolangdi Hydrological Station of the Yellow River were collected from the "Hydrological Yearbook of the People's Republic of China". Daily traffic data was collected from 1956-2015. Since the Xiaolangdi Reservoir was officially put into use at the end of 2001, the ...

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Abstract

The invention discloses a river ecological risk evaluation method based on an ecological deficit index, and belongs to the field of ecological hydrology, and the IPC classification number is E02B1 / 00. The evaluation method comprises the steps of obtaining seasonal ecological deficit characters and annual ecological deficit characters according to a hydrological station year-by-year flow hydrograph; and calculating and determining a seasonal ecological deficit threshold value and an annual ecological deficit threshold value for dividing each risk level through trial evaluation, and evaluating seasonal ecological risks and annual ecological risks over the years. According to the method, the limitation of an existing ecological risk evaluation method limited to the monthly time scale is overcome, the assessed time scale is expanded to seasons and years, and method support is provided for river management departments to implement ecological risk management of long-short combination, staging evaluation and graded early warning.

Description

technical field [0001] The invention belongs to the field of ecological risk assessment in hydrology, and in particular relates to a river ecological risk assessment method based on an ecological deficit index, belonging to a general water conservancy method, and its IPC classification number is E02B 1 / 00. Background technique [0002] Ecological risk assessment is an important way to evaluate the health of river ecosystems, and it can provide scientific and technological support for river management departments to implement ecological restoration. Assessing river ecological risk based on ecological deficit indicators is a new method gradually developed in recent years. The details of this method can be found in the literature [Zhang Song, Guo Xiaoming, Zhou Man, Hu Ting. A new method for assessing hydrological regime changes based on ecological runoff indicators [J]. Journal of Hydroelectric Power, 2021], which proposed the ecological risk on a monthly time scale assessmen...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/26G06F17/18
CPCG06Q10/0635G06Q50/26G06F17/18G06F2219/10
Inventor 郭晓明张松杨金标郭彦李新杰周曼胡挺苏磊
Owner HENAN UNIVERSITY
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