Ecological reference value calculating method based on plankton community change

A plankton and ecological technology, applied in the formulation of water quality benchmarks in environmental science, can solve the problems of ignoring inter-species relationships, intra-species relationships, differences, etc.

CN102436541AInactive Publication Date: 2012-05-02NANKAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-05-02
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an ecological reference value calculating method based on plankton community change. Ecological reference values of taihu lake basins and liao river basins in China are calculated by adopting a synthetical index method according to physical and chemical factors. A preliminary calculating framework is as follows: 1, determining a basin water environment ecological reference point and an ecological reference index; 2, making a BOX distribution map of each reference index of the reference point and giving a mark; and 3, weighing the marks of the ecological reference indexes, and taking the mark of 90 as the reference value of the basin. The establishment of an ecological reference can be used for evaluating the completeness of the structure and function of a water ecological system; and probably ignored potential problems during evaluation and analysis of other water quality references can be found out conveniently.
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Description

Technical field:

[0001] The invention belongs to the field of formulation of water quality benchmarks in environmental science, and is based on the response of plankton communities to changes in environmental pressure in my country, combined with physical and chemical factors, and adopts the Multimeric Index method to calculate the ecological benchmark values ​​of lakes and rivers, and evaluates the relationship between lakes and rivers. ecological health of the river. Background technique:

[0002] In the 1960s, the United States launched the research and formulation of water quality standards, including Human Health Criteria, Aquatic Life Criteria, Sediment Quality Criteria and Biology Criteria. A series of benchmark index systems including Biological Criteria, among which the most commonly used water quality benchmark derivation method is the double standard in the "Technical Guidelines for Deriving Numerical National Water Quality Standards for the Protection of Aquatic Or...

Examples

Embodiment Construction

[0042] ① Determine the Reference Sites (RS), Physical and Chemical Integrity Index (Index of Water Integrity, IWI), Integrity Index of Phytoplankton (Index of Plankton Integrity, IPI), Integrity Index of Zooplankton ( Index of Zooplankton Integrity, IZI);

[0043] ② BOX distribution diagram of each integrity index of the reference point;

[0044] ③As shown in Table 2, the value distribution range in the BOX diagram is divided into three value intervals according to 5%, 25%, 75%, and 95%, and the values ​​of each integrity index of RS are assigned according to the interval;

[0045] ④ Add the scores of each ecological benchmark index of RS by equal weight method to get the scores reflecting IWI, IPI and IZI of each RS;

[0046] ⑤Add the weights of IWI, IPI, and IZI benchmark values ​​reflecting RS to get the Index of Ecological Integrity (IEI). Reference value.