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Risk Assessment Method for Water Ecosystem in Receiving Area of ​​Water Diversion Project

A technology of risk assessment and ecological system, applied in the field of water ecological risk assessment of water diversion project water receiving area based on health index, can solve the problems such as the lack of water ecosystem risk assessment methods, achieve strong operability, standard selection of indicators, The effect of simple process

Active Publication Date: 2020-02-18
BEIJING WATER SCI & TECH INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the lack of risk assessment methods for the current water ecosystem, the present invention proposes a water ecological risk assessment method based on the health index on the basis of fully considering the impact mechanism and risk characteristics of the water diversion project on the water ecology of the water receiving area

Method used

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  • Risk Assessment Method for Water Ecosystem in Receiving Area of ​​Water Diversion Project
  • Risk Assessment Method for Water Ecosystem in Receiving Area of ​​Water Diversion Project
  • Risk Assessment Method for Water Ecosystem in Receiving Area of ​​Water Diversion Project

Examples

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Embodiment 1

[0058] Example 1 Water ecological risk assessment after water diversion of a reservoir in a water receiving area of ​​the South-to-North Water Diversion Project

[0059] 1. Health status value of receiving reservoirs

[0060] 1. Evaluation indicators As shown in Table 1, there are 8 indicators in total including physical and chemical indicators and ecological indicators.

[0061] 2. The evaluation objects are three time periods: April, June and August.

[0062] 3. Table 3 shows the monitoring data of each evaluation index in April, June, and August of 2014. Based on the three-year monitoring data from 2012 to 2014, the optimal value is determined.

[0063] Table 3 Current value of evaluation indicators

[0064] index April June August The optimal value of historical monitoring C1 8.50 8.40 8.90 8.90 C2 12.10 12.30 11.20 11.20 C3 2.10 1.98 1.93 0.80 C4 0.02 0.02 0.01 0.01 C5 0.00328 0.00491 0.00382 0.00191 C6 8.10...

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Abstract

The invention provides a water ecological system risk evaluation method for the water-receiving region of a water transfer project. According to the method, on the basis of the characteristic analysis on the water-receiving area, indexes that can represent the structure, the function and the systematic characteristics of a water ecosystem can be screened out. Meanwhile, the process of determining the weights of the indexes, establishing a health evaluation system and calculating the value of the health index of the current situation can be realized based on the principal component analysis. According to the method, a water power model and a water ecological model are coupled, and the water ecological situation of the water-receiving area after the water transfer process is simulated by means of the coupled MIKE and AQUATOX software. After that, the value of the health index after the water transfer process is calculated. Finally, the risk rank can be determined according to the change scope of the value of the health index. The method is scientific, simple, concise and strong in operability, and serves as a specific judging method for the risk assessment of the water ecosystem in the water-receiving area during the water transfer project.

Description

technical field [0001] The invention relates to the field of ecological risk assessment, in particular to a method for assessing water ecological risk in water receiving areas of water diversion projects based on a health index. Background technique [0002] Ecological risk assessment began with risk assessment in the late 1970s and early 1980s in the United States (Cairns, 1978). The initial risk assessment was mainly used for toxicological research on the impact of a single chemical pollutant on the environment and human health. In the late 1980s, tools and methods for ecological risk assessment began to appear in some studies, but the content still focused on biological ecotoxicology research, and the scale was generally limited to a single species or community. After the 1980s, the content of risk assessment research began to gradually shift from toxicological risks and human health risks to ecological risks, and the scale expanded from populations and communities to eco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06
Inventor 于磊顾华申颖洁
Owner BEIJING WATER SCI & TECH INST
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