River health change quantitative attribution method, device and system

A technology for rivers and health, which is applied in the field of hydrology and water resources, and can solve problems such as the impact of climate change on river health, which is less comprehensively considered

Pending Publication Date: 2021-01-29
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, traditional river health assessment methods focus on the assessment of current riv

Method used

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  • River health change quantitative attribution method, device and system
  • River health change quantitative attribution method, device and system
  • River health change quantitative attribution method, device and system

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Experimental program
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Embodiment 2

[0122] Based on the same inventive concept as in Embodiment 1, the embodiment of the present invention provides a quantitative attribution device for river health changes, including:

[0123] The judging unit is used to judge the sudden change point of the annual average flow process of the basin, the period before the sudden change point is the base period, and the period after the sudden change point is the change period;

[0124] The calibration unit is used to calibrate the parameters of the hydrological model by using the hydrometeorological data of the reference period to obtain a calibrated hydrological model;

[0125] The first calculation unit is used to input the hydrometeorological data of the base period and the change period into the hydrological model to obtain the natural flow series;

[0126] An acquisition unit, configured to acquire a river health level calculation model, the river health level calculation model includes different flow intervals, and river he...

Embodiment 3

[0130] Based on the same inventive concept as in Embodiment 1, the embodiment of the present invention provides a quantitative attribution system for river health changes, including a storage medium and a processor;

[0131] The storage medium is used to store instructions;

[0132] The processor is configured to operate according to the instructions to execute the steps of the method according to any one of Embodiment 1.

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Abstract

The invention discloses a river health change quantitative attribution method, device and system, and the method comprises the steps: judging a mutation point of an annual average flow process of a drainage basin, wherein periods before and after the mutation point are respectively called a reference period and a change period; calibrating a hydrological model by utilizing the hydrological and meteorological data of the reference period; inputting the hydrometeorological data of the reference period and the change period into a hydrological model to obtain a natural flow sequence; obtaining ariver health grade calculation model, wherein the river health grade calculation model comprises different flow intervals and a river health grade calculation formula; inputting the actually-measuredflow sequence and the natural flow sequence into a river health grade calculation model, calculating an actually-measured river health grade sequence and a natural river health grade sequence, comparing the difference between the actually-measured river health grade sequence and the natural river health grade sequence, and quantitatively separating contribution rates of climate changes and human activities on river health. The method can accurately calculate the contribution rate of climate change and human activities to river basin and river ecological health influence.

Description

technical field [0001] The invention belongs to the technical field of hydrology and water resources application, and in particular relates to a quantitative attribution method, device and system for river health changes. Background technique [0002] Rivers are not only important pathways of the hydrological cycle, but also provide many ecosystem services to humans and other organisms. Healthy rivers have both economic and social value and should maintain ecosystem structure and function. Under the changing environment, the ecological health of rivers has undergone significant changes: the impact of human activities on runoff, such as runoff regulation, water abstraction and other activities, directly damages the health of rivers; climate change affects runoff through precipitation and the frequency and intensity of extreme flood events And indirectly pose a threat to the health of the river. The degradation of river ecological environment will not only cause the decline ...

Claims

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Application Information

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IPC IPC(8): G06F17/18
CPCG06F17/18
Inventor 江善虎周乐任立良王孟浩袁飞刘懿杨肖丽
Owner HOHAI UNIV
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